18
Cisco DHCP Option 66 und 67 testen bzw. prüfen
Hallo,
ich stellte fest, dass beim Versuch über PXE zu starten gar kein Zugriffsversuch auf den TFTP-Server stattfindet.
Das habe ich mit tcpdump |grep tftp gemacht.
Wenn ich manuell mittels Client drauf zugreife sehe ich da Traffic.
TFTP und auch tcpdump sind also ok.
Da ich am zu bootenden Rechner (verschiedene Rechner getestet) PXE-32 TFTP Timeout erhalte, vermute ich ein Problem am DHCP.
Sowohl die VBox als auch der Dell zeigen mir keine Boot IP an. Daher ist jetzt meine Frage, wie ich prüfen kann, ob der DHCP (Cisco 886va) diese Informationen korrekt weitergibt.
Eine IP und das Gateway bekommt der Rechner, das wird mir angezeigt.
Sonst funktioniert der DHCP auch normal.
Ich vermute das Problem in Option 66, denn wenn kein Dateizugriff möglich wäre würde ich das mit tcpdump feststellen können-
LG Marco
ich stellte fest, dass beim Versuch über PXE zu starten gar kein Zugriffsversuch auf den TFTP-Server stattfindet.
Das habe ich mit tcpdump |grep tftp gemacht.
Wenn ich manuell mittels Client drauf zugreife sehe ich da Traffic.
TFTP und auch tcpdump sind also ok.
Da ich am zu bootenden Rechner (verschiedene Rechner getestet) PXE-32 TFTP Timeout erhalte, vermute ich ein Problem am DHCP.
Sowohl die VBox als auch der Dell zeigen mir keine Boot IP an. Daher ist jetzt meine Frage, wie ich prüfen kann, ob der DHCP (Cisco 886va) diese Informationen korrekt weitergibt.
ip dhcp pool lokales-netz
network 10.0.0.0 255.255.255.0
default-router 10.0.0.254
option 42 ip 130.149.17.8
dns-server 176.103.130.130
option 66 ip 10.0.0.115
option 67 ascii pxelinux.0Sonst funktioniert der DHCP auch normal.
Ich vermute das Problem in Option 66, denn wenn kein Dateizugriff möglich wäre würde ich das mit tcpdump feststellen können-
LG Marco
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Content-ID: 392052
Url: https://administrator.de/forum/cisco-dhcp-option-66-und-67-testen-bzw-pruefen-392052.html
Ausgedruckt am: 21.12.2024 um 15:12 Uhr
18 Kommentare
Neuester Kommentar
Ich kenne die Option 66 nur als Hostname und nicht als IP.
Zitat von @Windows10Gegner:
Sowohl die VBox als auch der Dell zeigen mir keine Boot IP an. Daher ist jetzt meine Frage, wie ich prüfen kann, ob der DHCP (Cisco 886va) diese Informationen korrekt weitergibt.
Sowohl die VBox als auch der Dell zeigen mir keine Boot IP an. Daher ist jetzt meine Frage, wie ich prüfen kann, ob der DHCP (Cisco 886va) diese Informationen korrekt weitergibt.
Moin,
damit:
sudo nmap --script broadcast-dhcp-discoverdas sollte dann sowas liefern:
Starting Nmap 7.01 ( https://nmap.org ) at 2018-11-08 14:31 CET
Pre-scan script results:
| broadcast-dhcp-discover:
| Response 1 of 1:
| IP Offered: 172.31.117.78
| DHCP Message Type: DHCPOFFER
| Server Identifier: 172.31.117.1
| IP Address Lease Time: 3650d00h00m00s
| Renewal Time Value: 1825d00h00m00s
| Rebinding Time Value: 3193d18h00m00s
| Subnet Mask: 255.255.255.0
| Router: 172.31.117.1
| Domain Name Server: 172.31.117.1
| Domain Name: dummy.bob
| Broadcast Address: 172.31.117.255
|_ NTP Servers: 172.31.117.1
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 0.61 seconds
Mit dhcpdump kannst Du dann speziell dhcp mitrsniffen.
lks
djkuhpisse@netburst-oc:~$ sudo nmap --script broadcast-dhcp-discover
Starting Nmap 7.60 ( https://nmap.org ) at 2018-11-08 14:37 CET
Pre-scan script results:
| broadcast-dhcp-discover:
| Response 1 of 1:
| IP Offered: 10.0.0.53
| DHCP Message Type: DHCPOFFER
| Server Identifier: 10.0.0.254
| IP Address Lease Time: 1d00h00m00s
| Renewal Time Value: 12h00m00s
| Rebinding Time Value: 21h00m00s
| Subnet Mask: 255.255.255.0
| Router: 10.0.0.254
| NTP Servers: 130.149.17.8
| Domain Name Server: 176.103.130.130
| TFTP Server Name:
| \x00\x00s
|_ Bootfile Name: pxelinux.0
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 2.87 seconds
djkuhpisse@netburst-oc:~$ Jetzt ist mir klar, was hier die ganze Zeit passiert. Und ich suchte den Fehler am TFTP.
Ich würde gerne den DNS für neue Geräte auf diesem lassen, denn da werden Werbedomains nicht aufgelöst.
Daher würde ich gerne nur die IP 10.0.0.115 übergeben.
@tikayevent
Wenn das nur mit Domain gehen sollte sollte es beim Cisco keine Option geben, eine IP einzugeben.
Der Sinn einer "nur Domain"-Lösung ohne reine IP-Lösung ist für mich auch nicht erkennbar. Ich meine ich habe das mit IP schon gesehen.
Ich habe jetzt DNS und Option 66 geändert, funktioniert soweit in der Theorie.
djkuhpisse@netburst-oc:~$ sudo nmap --script broadcast-dhcp-discover
Starting Nmap 7.60 ( https://nmap.org ) at 2018-11-08 14:47 CET
Pre-scan script results:
| broadcast-dhcp-discover:
| Response 1 of 1:
| IP Offered: 10.0.0.53
| DHCP Message Type: DHCPOFFER
| Server Identifier: 10.0.0.254
| IP Address Lease Time: 1d00h00m00s
| Renewal Time Value: 12h00m00s
| Rebinding Time Value: 21h00m00s
| Subnet Mask: 255.255.255.0
| Router: 10.0.0.254
| NTP Servers: 130.149.17.8
| Domain Name Server: 10.0.0.254
| TFTP Server Name: djkuhpisse.ddns.net
|_ Bootfile Name: pxelinux.0
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 0.82 seconds
djkuhpisse@netburst-oc:~$ EDIT:
dhcpdump zeigt mir nichts mit Option 66 an.
OPTION: 53 ( 1) DHCP message type 5 (DHCPACK)
OPTION: 54 ( 4) Server identifier 10.0.0.254
OPTION: 51 ( 4) IP address leasetime 86400 (24h)
OPTION: 58 ( 4) T1 43200 (12h)
OPTION: 59 ( 4) T2 75600 (21h)
OPTION: 1 ( 4) Subnet mask 255.255.255.0
OPTION: 3 ( 4) Routers 10.0.0.254
OPTION: 6 ( 4) DNS server 10.0.0.254
OPTION: 67 ( 10) Bootfile name pxelinux.0
Du kannst auch den DHCP Request des Clients mit dem Wireshark mitsniffern. Dort ist klar ersichtlich welche Options der requested.
Analog dazu kannst du dann die Antwort des Cisco DHCP Servers ansehen, der diese requesteten Options beantwortet haben muss.
Das steht alles in den DHCP Paketen.
Cisco hat zusätzlich noch die Option 150 die den TFTP Server angibt. Die ist aber vermutlich nur für deren Telefone erforderlich. Unterscheiden tut sie sich in der Beziehung von der Option 66 das man dort multiple IP oder Hostnamen definieren kann !
Wireshark ist hier aber letztlich dein bester Freund !
Analog dazu kannst du dann die Antwort des Cisco DHCP Servers ansehen, der diese requesteten Options beantwortet haben muss.
Das steht alles in den DHCP Paketen.
Cisco hat zusätzlich noch die Option 150 die den TFTP Server angibt. Die ist aber vermutlich nur für deren Telefone erforderlich. Unterscheiden tut sie sich in der Beziehung von der Option 66 das man dort multiple IP oder Hostnamen definieren kann !
Wireshark ist hier aber letztlich dein bester Freund !
Wireshark sagt,
Server host name not given
Boot File name not given
Später kommt dann Option 67
Length: 10
Bootfile name: pxelinux.0
Von Option 66 keine Spur.
Wie kann man da nur die Pakete speichern, die aktuell angezeigt werden (gefiltert mit bootp)?
Dann kann ich das gerne hochladen.
EDIT:
Server host name not given
Boot File name not given
Später kommt dann Option 67
Length: 10
Bootfile name: pxelinux.0
Von Option 66 keine Spur.
Wie kann man da nur die Pakete speichern, die aktuell angezeigt werden (gefiltert mit bootp)?
Dann kann ich das gerne hochladen.
EDIT:
ip dhcp pool lokales-netz
network 10.0.0.0 255.255.255.0
default-router 10.0.0.254
option 42 ip 130.149.17.8
dns-server 10.0.0.254
option 66 ascii domain.intern
option 67 ascii pxelinux.0
Markieren und "save as". Sinnvollerweise als ASCII Text wenn du es hier posten willst.
Die Options sollten eigentlich im ersten Request stehen. Der DHJCP Server liegert nur das was auch requested wird.
Die Options sollten eigentlich im ersten Request stehen. Der DHJCP Server liegert nur das was auch requested wird.
Habs hier hochgeladen: https://files.danwin1210.me/uploads/11-2018/tftp1.pcapng
Konnte im Request nichts zu Option 66 finden.
Konnte im Request nichts zu Option 66 finden.
Warum wenn du hier den ASCII Text Output posten kannst 
Datei -> Paketdissektion exportieren -> als reinen Text -> Fertisch !
Zwangswerbung und Viren von Sharehostern hat keiner gerne...
Datei -> Paketdissektion exportieren -> als reinen Text -> Fertisch !
Zwangswerbung und Viren von Sharehostern hat keiner gerne...
No. Time Source Destination Protocol Length Info
1 0.000000000 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Discover - Transaction ID 0xa3ead968
Frame 1: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Discover)
No. Time Source Destination Protocol Length Info
2 0.000020413 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Discover - Transaction ID 0xa3ead968
Frame 2: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Discover)
No. Time Source Destination Protocol Length Info
3 0.001441518 gateway 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xa3ead968
Frame 3: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (Offer)
No. Time Source Destination Protocol Length Info
4 0.001453545 gateway 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xa3ead968
Frame 4: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (Offer)
No. Time Source Destination Protocol Length Info
5 4.064613182 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Request - Transaction ID 0xa3ead968
Frame 5: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Request)
No. Time Source Destination Protocol Length Info
6 4.064631738 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Request - Transaction ID 0xa3ead968
Frame 6: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Request)
No. Time Source Destination Protocol Length Info
7 4.065832227 gateway 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xa3ead968
Frame 7: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (ACK)
No. Time Source Destination Protocol Length Info
8 4.065844424 gateway 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xa3ead968
Frame 8: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (ACK)
Ja, leider. Du hast die "Paketdissektion exportieren" nicht gewählt
Dann sahe es so aus:
No. Time Source Destination Protocol Length Info
19 17.909640 0.0.0.0 255.255.255.255 DHCP 342 DHCP Request - Transaction ID 0x447ffc7e
Frame 19: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits)
Ethernet II, Src: Apple_a5:e9:f6 (78:4f:43:ff:ff:ff), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 68, Dst Port: 67
Bootstrap Protocol (Request)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0x447ffc7e
Seconds elapsed: 0
Bootp flags: 0x0000 (Unicast)
Client IP address: 0.0.0.0
Your (client) IP address: 0.0.0.0
Next server IP address: 0.0.0.0
Relay agent IP address: 0.0.0.0
Client MAC address: Apple_a5:e (78:4f:43:ff:e9:ff)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Request)
Option: (55) Parameter Request List
Option: (57) Maximum DHCP Message Size
Option: (61) Client identifier
Option: (50) Requested IP Address
Option: (51) IP Address Lease Time
Option: (12) Host Name
Option: (255) End
Padding: 000000000000
Dann sahe es so aus:
No. Time Source Destination Protocol Length Info
19 17.909640 0.0.0.0 255.255.255.255 DHCP 342 DHCP Request - Transaction ID 0x447ffc7e
Frame 19: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits)
Ethernet II, Src: Apple_a5:e9:f6 (78:4f:43:ff:ff:ff), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 68, Dst Port: 67
Bootstrap Protocol (Request)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0x447ffc7e
Seconds elapsed: 0
Bootp flags: 0x0000 (Unicast)
Client IP address: 0.0.0.0
Your (client) IP address: 0.0.0.0
Next server IP address: 0.0.0.0
Relay agent IP address: 0.0.0.0
Client MAC address: Apple_a5:e (78:4f:43:ff:e9:ff)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Request)
Option: (55) Parameter Request List
Option: (57) Maximum DHCP Message Size
Option: (61) Client identifier
Option: (50) Requested IP Address
Option: (51) IP Address Lease Time
Option: (12) Host Name
Option: (255) End
Padding: 000000000000
Habe es jetzt wie gewünscht gemacht (File Export Packet Dissections) . Ändert leider nichts.
No. Time Source Destination Protocol Length Info
1 0.000000000 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Discover - Transaction ID 0xa3ead968
Frame 1: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Discover)
No. Time Source Destination Protocol Length Info
2 0.000020413 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Discover - Transaction ID 0xa3ead968
Frame 2: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Discover)
No. Time Source Destination Protocol Length Info
3 0.001441518 gateway 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xa3ead968
Frame 3: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (Offer)
No. Time Source Destination Protocol Length Info
4 0.001453545 gateway 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xa3ead968
Frame 4: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (Offer)
No. Time Source Destination Protocol Length Info
5 4.064613182 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Request - Transaction ID 0xa3ead968
Frame 5: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Request)
No. Time Source Destination Protocol Length Info
6 4.064631738 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Request - Transaction ID 0xa3ead968
Frame 6: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Bootstrap Protocol (Request)
No. Time Source Destination Protocol Length Info
7 4.065832227 gateway 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xa3ead968
Frame 7: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (ACK)
No. Time Source Destination Protocol Length Info
8 4.065844424 gateway 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xa3ead968
Frame 8: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Bootstrap Protocol (ACK)
Du musst natürlich auch VORHER mit dem kleinen grauen Pfeil vorne den Inhalt öffnen 
Jetzt sollte alles dabei sein.
No. Time Source Destination Protocol Length Info
1 0.000000000 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Discover - Transaction ID 0xa3ead968
Frame 1: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:44.740071656 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685524.740071656 seconds
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 590 bytes (4720 bits)
Capture Length: 590 bytes (4720 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 576
Identification: 0x0002 (2)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 20
Protocol: UDP (17)
Header checksum: 0xa4ac [validation disabled]
[Header checksum status: Unverified]
Source: fr.a2dfp.net (0.0.0.0)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source Port: bootpc (68)
Destination Port: bootps (67)
Length: 556
Checksum: 0xa7c6 [unverified]
[Checksum Status: Unverified]
[Stream index: 0]
Bootstrap Protocol (Discover)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 16
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: fr.a2dfp.net (0.0.0.0)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Discover)
Length: 1
DHCP: Discover (1)
Option: (55) Parameter Request List
Length: 24
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (5) Name Server
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (11) Resource Location Server
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (13) Boot File Size
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (16) Swap Server
Parameter Request List Item: (17) Root Path
Parameter Request List Item: (18) Extensions Path
Parameter Request List Item: (43) Vendor-Specific Information
Parameter Request List Item: (54) DHCP Server Identifier
Parameter Request List Item: (60) Vendor class identifier
Parameter Request List Item: (67) Bootfile name
Parameter Request List Item: (128) DOCSIS full security server IP [TODO]
Parameter Request List Item: (129) PXE - undefined (vendor specific)
Parameter Request List Item: (130) PXE - undefined (vendor specific)
Parameter Request List Item: (131) PXE - undefined (vendor specific)
Parameter Request List Item: (132) PXE - undefined (vendor specific)
Parameter Request List Item: (133) PXE - undefined (vendor specific)
Parameter Request List Item: (134) PXE - undefined (vendor specific)
Parameter Request List Item: (135) PXE - undefined (vendor specific)
Option: (57) Maximum DHCP Message Size
Length: 2
Maximum DHCP Message Size: 1260
Option: (97) UUID/GUID-based Client Identifier
Length: 17
Client Identifier (UUID): 4c4c4544-004d-3610-8034-b5c04f44334a
Option: (93) Client System Architecture
Length: 2
Client System Architecture: IA x86 PC (0)
Option: (94) Client Network Device Interface
Length: 3
Major Version: 2
Minor Version: 1
Option: (60) Vendor class identifier
Length: 32
Vendor class identifier: PXEClient:Arch:00000:UNDI:002001
Option: (255) End
Option End: 255
Padding: 000000000000000000000000000000000000000000000000...
No. Time Source Destination Protocol Length Info
2 0.000020413 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Discover - Transaction ID 0xa3ead968
Frame 2: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:44.740092069 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685524.740092069 seconds
[Time delta from previous captured frame: 0.000020413 seconds]
[Time delta from previous displayed frame: 0.000020413 seconds]
[Time since reference or first frame: 0.000020413 seconds]
Frame Number: 2
Frame Length: 590 bytes (4720 bits)
Capture Length: 590 bytes (4720 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 576
Identification: 0x0002 (2)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 20
Protocol: UDP (17)
Header checksum: 0xa4ac [validation disabled]
[Header checksum status: Unverified]
Source: fr.a2dfp.net (0.0.0.0)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source Port: bootpc (68)
Destination Port: bootps (67)
Length: 556
Checksum: 0xa7c6 [unverified]
[Checksum Status: Unverified]
[Stream index: 0]
Bootstrap Protocol (Discover)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 16
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: fr.a2dfp.net (0.0.0.0)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Discover)
Length: 1
DHCP: Discover (1)
Option: (55) Parameter Request List
Length: 24
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (5) Name Server
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (11) Resource Location Server
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (13) Boot File Size
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (16) Swap Server
Parameter Request List Item: (17) Root Path
Parameter Request List Item: (18) Extensions Path
Parameter Request List Item: (43) Vendor-Specific Information
Parameter Request List Item: (54) DHCP Server Identifier
Parameter Request List Item: (60) Vendor class identifier
Parameter Request List Item: (67) Bootfile name
Parameter Request List Item: (128) DOCSIS full security server IP [TODO]
Parameter Request List Item: (129) PXE - undefined (vendor specific)
Parameter Request List Item: (130) PXE - undefined (vendor specific)
Parameter Request List Item: (131) PXE - undefined (vendor specific)
Parameter Request List Item: (132) PXE - undefined (vendor specific)
Parameter Request List Item: (133) PXE - undefined (vendor specific)
Parameter Request List Item: (134) PXE - undefined (vendor specific)
Parameter Request List Item: (135) PXE - undefined (vendor specific)
Option: (57) Maximum DHCP Message Size
Length: 2
Maximum DHCP Message Size: 1260
Option: (97) UUID/GUID-based Client Identifier
Length: 17
Client Identifier (UUID): 4c4c4544-004d-3610-8034-b5c04f44334a
Option: (93) Client System Architecture
Length: 2
Client System Architecture: IA x86 PC (0)
Option: (94) Client Network Device Interface
Length: 3
Major Version: 2
Minor Version: 1
Option: (60) Vendor class identifier
Length: 32
Vendor class identifier: PXEClient:Arch:00000:UNDI:002001
Option: (255) End
Option End: 255
Padding: 000000000000000000000000000000000000000000000000...
No. Time Source Destination Protocol Length Info
3 0.001441518 gateway 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xa3ead968
Frame 3: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:44.741513174 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685524.741513174 seconds
[Time delta from previous captured frame: 0.001421105 seconds]
[Time delta from previous displayed frame: 0.001421105 seconds]
[Time since reference or first frame: 0.001441518 seconds]
Frame Number: 3
Frame Length: 342 bytes (2736 bits)
Capture Length: 342 bytes (2736 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
Address: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 328
Identification: 0x10be (4286)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 255
Protocol: UDP (17)
Header checksum: 0x9ee9 [validation disabled]
[Header checksum status: Unverified]
Source: gateway (10.0.0.254)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Source Port: bootps (67)
Destination Port: bootpc (68)
Length: 308
Checksum: 0xafd7 [unverified]
[Checksum Status: Unverified]
[Stream index: 1]
Bootstrap Protocol (Offer)
Message type: Boot Reply (2)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 0
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: 10.0.0.52 (10.0.0.52)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Offer)
Length: 1
DHCP: Offer (2)
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: gateway (10.0.0.254)
Option: (51) IP Address Lease Time
Length: 4
IP Address Lease Time: (86196s) 23 hours, 56 minutes, 36 seconds
Option: (58) Renewal Time Value
Length: 4
Renewal Time Value: (43098s) 11 hours, 58 minutes, 18 seconds
Option: (59) Rebinding Time Value
Length: 4
Rebinding Time Value: (75418s) 20 hours, 56 minutes, 58 seconds
Option: (1) Subnet Mask
Length: 4
Subnet Mask: 255.255.255.0
Option: (3) Router
Length: 4
Router: gateway (10.0.0.254)
Option: (6) Domain Name Server
Length: 4
Domain Name Server: gateway (10.0.0.254)
Option: (67) Bootfile name
Length: 10
Bootfile name: pxelinux.0
Option: (255) End
Option End: 255
Padding: 0000
No. Time Source Destination Protocol Length Info
4 0.001453545 gateway 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xa3ead968
Frame 4: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:44.741525201 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685524.741525201 seconds
[Time delta from previous captured frame: 0.000012027 seconds]
[Time delta from previous displayed frame: 0.000012027 seconds]
[Time since reference or first frame: 0.001453545 seconds]
Frame Number: 4
Frame Length: 342 bytes (2736 bits)
Capture Length: 342 bytes (2736 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
Address: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 328
Identification: 0x10be (4286)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 255
Protocol: UDP (17)
Header checksum: 0x9ee9 [validation disabled]
[Header checksum status: Unverified]
Source: gateway (10.0.0.254)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Source Port: bootps (67)
Destination Port: bootpc (68)
Length: 308
Checksum: 0xafd7 [unverified]
[Checksum Status: Unverified]
[Stream index: 1]
Bootstrap Protocol (Offer)
Message type: Boot Reply (2)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 0
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: 10.0.0.52 (10.0.0.52)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Offer)
Length: 1
DHCP: Offer (2)
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: gateway (10.0.0.254)
Option: (51) IP Address Lease Time
Length: 4
IP Address Lease Time: (86196s) 23 hours, 56 minutes, 36 seconds
Option: (58) Renewal Time Value
Length: 4
Renewal Time Value: (43098s) 11 hours, 58 minutes, 18 seconds
Option: (59) Rebinding Time Value
Length: 4
Rebinding Time Value: (75418s) 20 hours, 56 minutes, 58 seconds
Option: (1) Subnet Mask
Length: 4
Subnet Mask: 255.255.255.0
Option: (3) Router
Length: 4
Router: gateway (10.0.0.254)
Option: (6) Domain Name Server
Length: 4
Domain Name Server: gateway (10.0.0.254)
Option: (67) Bootfile name
Length: 10
Bootfile name: pxelinux.0
Option: (255) End
Option End: 255
Padding: 0000
No. Time Source Destination Protocol Length Info
5 4.064613182 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Request - Transaction ID 0xa3ead968
Frame 5: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:48.804684838 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685528.804684838 seconds
[Time delta from previous captured frame: 4.063159637 seconds]
[Time delta from previous displayed frame: 4.063159637 seconds]
[Time since reference or first frame: 4.064613182 seconds]
Frame Number: 5
Frame Length: 590 bytes (4720 bits)
Capture Length: 590 bytes (4720 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 576
Identification: 0x0003 (3)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 20
Protocol: UDP (17)
Header checksum: 0xa4ab [validation disabled]
[Header checksum status: Unverified]
Source: fr.a2dfp.net (0.0.0.0)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source Port: bootpc (68)
Destination Port: bootps (67)
Length: 556
Checksum: 0x6b49 [unverified]
[Checksum Status: Unverified]
[Stream index: 0]
Bootstrap Protocol (Request)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 16
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: fr.a2dfp.net (0.0.0.0)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Request)
Length: 1
DHCP: Request (3)
Option: (50) Requested IP Address
Length: 4
Requested IP Address: 10.0.0.52 (10.0.0.52)
Option: (55) Parameter Request List
Length: 24
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (5) Name Server
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (11) Resource Location Server
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (13) Boot File Size
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (16) Swap Server
Parameter Request List Item: (17) Root Path
Parameter Request List Item: (18) Extensions Path
Parameter Request List Item: (43) Vendor-Specific Information
Parameter Request List Item: (54) DHCP Server Identifier
Parameter Request List Item: (60) Vendor class identifier
Parameter Request List Item: (67) Bootfile name
Parameter Request List Item: (128) DOCSIS full security server IP [TODO]
Parameter Request List Item: (129) PXE - undefined (vendor specific)
Parameter Request List Item: (130) PXE - undefined (vendor specific)
Parameter Request List Item: (131) PXE - undefined (vendor specific)
Parameter Request List Item: (132) PXE - undefined (vendor specific)
Parameter Request List Item: (133) PXE - undefined (vendor specific)
Parameter Request List Item: (134) PXE - undefined (vendor specific)
Parameter Request List Item: (135) PXE - undefined (vendor specific)
Option: (57) Maximum DHCP Message Size
Length: 2
Maximum DHCP Message Size: 1260
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: gateway (10.0.0.254)
Option: (97) UUID/GUID-based Client Identifier
Length: 17
Client Identifier (UUID): 4c4c4544-004d-3610-8034-b5c04f44334a
Option: (93) Client System Architecture
Length: 2
Client System Architecture: IA x86 PC (0)
Option: (94) Client Network Device Interface
Length: 3
Major Version: 2
Minor Version: 1
Option: (60) Vendor class identifier
Length: 32
Vendor class identifier: PXEClient:Arch:00000:UNDI:002001
Option: (255) End
Option End: 255
Padding: 000000000000000000000000000000000000000000000000...
No. Time Source Destination Protocol Length Info
6 4.064631738 fr.a2dfp.net 255.255.255.255 DHCP 590 DHCP Request - Transaction ID 0xa3ead968
Frame 6: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:48.804703394 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685528.804703394 seconds
[Time delta from previous captured frame: 0.000018556 seconds]
[Time delta from previous displayed frame: 0.000018556 seconds]
[Time since reference or first frame: 4.064631738 seconds]
Frame Number: 6
Frame Length: 590 bytes (4720 bits)
Capture Length: 590 bytes (4720 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Dell_ea:d9:68 (00:1a:a0:ea:d9:68), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: fr.a2dfp.net (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 576
Identification: 0x0003 (3)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 20
Protocol: UDP (17)
Header checksum: 0xa4ab [validation disabled]
[Header checksum status: Unverified]
Source: fr.a2dfp.net (0.0.0.0)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source Port: bootpc (68)
Destination Port: bootps (67)
Length: 556
Checksum: 0x6b49 [unverified]
[Checksum Status: Unverified]
[Stream index: 0]
Bootstrap Protocol (Request)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 16
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: fr.a2dfp.net (0.0.0.0)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Request)
Length: 1
DHCP: Request (3)
Option: (50) Requested IP Address
Length: 4
Requested IP Address: 10.0.0.52 (10.0.0.52)
Option: (55) Parameter Request List
Length: 24
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (5) Name Server
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (11) Resource Location Server
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (13) Boot File Size
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (16) Swap Server
Parameter Request List Item: (17) Root Path
Parameter Request List Item: (18) Extensions Path
Parameter Request List Item: (43) Vendor-Specific Information
Parameter Request List Item: (54) DHCP Server Identifier
Parameter Request List Item: (60) Vendor class identifier
Parameter Request List Item: (67) Bootfile name
Parameter Request List Item: (128) DOCSIS full security server IP [TODO]
Parameter Request List Item: (129) PXE - undefined (vendor specific)
Parameter Request List Item: (130) PXE - undefined (vendor specific)
Parameter Request List Item: (131) PXE - undefined (vendor specific)
Parameter Request List Item: (132) PXE - undefined (vendor specific)
Parameter Request List Item: (133) PXE - undefined (vendor specific)
Parameter Request List Item: (134) PXE - undefined (vendor specific)
Parameter Request List Item: (135) PXE - undefined (vendor specific)
Option: (57) Maximum DHCP Message Size
Length: 2
Maximum DHCP Message Size: 1260
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: gateway (10.0.0.254)
Option: (97) UUID/GUID-based Client Identifier
Length: 17
Client Identifier (UUID): 4c4c4544-004d-3610-8034-b5c04f44334a
Option: (93) Client System Architecture
Length: 2
Client System Architecture: IA x86 PC (0)
Option: (94) Client Network Device Interface
Length: 3
Major Version: 2
Minor Version: 1
Option: (60) Vendor class identifier
Length: 32
Vendor class identifier: PXEClient:Arch:00000:UNDI:002001
Option: (255) End
Option End: 255
Padding: 000000000000000000000000000000000000000000000000...
No. Time Source Destination Protocol Length Info
7 4.065832227 gateway 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xa3ead968
Frame 7: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:48.805903883 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685528.805903883 seconds
[Time delta from previous captured frame: 0.001200489 seconds]
[Time delta from previous displayed frame: 0.001200489 seconds]
[Time since reference or first frame: 4.065832227 seconds]
Frame Number: 7
Frame Length: 342 bytes (2736 bits)
Capture Length: 342 bytes (2736 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
Address: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 328
Identification: 0x10bf (4287)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 255
Protocol: UDP (17)
Header checksum: 0x9ee8 [validation disabled]
[Header checksum status: Unverified]
Source: gateway (10.0.0.254)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Source Port: bootps (67)
Destination Port: bootpc (68)
Length: 308
Checksum: 0xc4d5 [unverified]
[Checksum Status: Unverified]
[Stream index: 1]
Bootstrap Protocol (ACK)
Message type: Boot Reply (2)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 0
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: 10.0.0.52 (10.0.0.52)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (ACK)
Length: 1
DHCP: ACK (5)
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: gateway (10.0.0.254)
Option: (51) IP Address Lease Time
Length: 4
IP Address Lease Time: (86400s) 1 day
Option: (58) Renewal Time Value
Length: 4
Renewal Time Value: (43200s) 12 hours
Option: (59) Rebinding Time Value
Length: 4
Rebinding Time Value: (75600s) 21 hours
Option: (1) Subnet Mask
Length: 4
Subnet Mask: 255.255.255.0
Option: (3) Router
Length: 4
Router: gateway (10.0.0.254)
Option: (6) Domain Name Server
Length: 4
Domain Name Server: gateway (10.0.0.254)
Option: (67) Bootfile name
Length: 10
Bootfile name: pxelinux.0
Option: (255) End
Option End: 255
Padding: 0000
No. Time Source Destination Protocol Length Info
8 4.065844424 gateway 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xa3ead968
Frame 8: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits) on interface 0
Interface id: 0 (bond0)
Interface name: bond0
Encapsulation type: Ethernet (1)
Arrival Time: Nov 8, 2018 14:58:48.805916080 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1541685528.805916080 seconds
[Time delta from previous captured frame: 0.000012197 seconds]
[Time delta from previous displayed frame: 0.000012197 seconds]
[Time since reference or first frame: 4.065844424 seconds]
Frame Number: 8
Frame Length: 342 bytes (2736 bits)
Capture Length: 342 bytes (2736 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:bootp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
Address: Cisco_d1:b5:5c (b8:38:61:d1:b5:5c)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: gateway (10.0.0.254), Dst: 255.255.255.255 (255.255.255.255)
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 328
Identification: 0x10bf (4287)
Flags: 0x0000
0... .... .... .... = Reserved bit: Not set
.0.. .... .... .... = Don't fragment: Not set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 255
Protocol: UDP (17)
Header checksum: 0x9ee8 [validation disabled]
[Header checksum status: Unverified]
Source: gateway (10.0.0.254)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
Source Port: bootps (67)
Destination Port: bootpc (68)
Length: 308
Checksum: 0xc4d5 [unverified]
[Checksum Status: Unverified]
[Stream index: 1]
Bootstrap Protocol (ACK)
Message type: Boot Reply (2)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xa3ead968
Seconds elapsed: 0
Bootp flags: 0x8000, Broadcast flag (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: fr.a2dfp.net (0.0.0.0)
Your (client) IP address: 10.0.0.52 (10.0.0.52)
Next server IP address: fr.a2dfp.net (0.0.0.0)
Relay agent IP address: fr.a2dfp.net (0.0.0.0)
Client MAC address: Dell_ea:d9:68 (00:1a:a0:ea:d9:68)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (ACK)
Length: 1
DHCP: ACK (5)
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: gateway (10.0.0.254)
Option: (51) IP Address Lease Time
Length: 4
IP Address Lease Time: (86400s) 1 day
Option: (58) Renewal Time Value
Length: 4
Renewal Time Value: (43200s) 12 hours
Option: (59) Rebinding Time Value
Length: 4
Rebinding Time Value: (75600s) 21 hours
Option: (1) Subnet Mask
Length: 4
Subnet Mask: 255.255.255.0
Option: (3) Router
Length: 4
Router: gateway (10.0.0.254)
Option: (6) Domain Name Server
Length: 4
Domain Name Server: gateway (10.0.0.254)
Option: (67) Bootfile name
Length: 10
Bootfile name: pxelinux.0
Option: (255) End
Option End: 255
Padding: 0000
Es hat wohl geklappt, siehe Scheint geklappt zu haben, siehe Ubuntu Live DVD PXE Boot
Könnte, sollte, hätte...zuviel Konjunktiv und mit dem Link kann man nicht wirklich was anfangen
Der führt auf ein Ubuntu Net Install Image. Dafür ist natürlich kein TFTP Boot erforderlich, denn das lädt das Install Image stinknormal über das Internet !
Bleibt die Frage: Klappts oder klappts nicht ?
Der führt auf ein Ubuntu Net Install Image. Dafür ist natürlich kein TFTP Boot erforderlich, denn das lädt das Install Image stinknormal über das Internet !
Bleibt die Frage: Klappts oder klappts nicht ?
Die notwendigen Daten für den Netinstall werden per TFTP gezogen, wenn ich über PXE boote.
Das DHCP-Problem ist gelöst, jetzt muss ich noch hinkriegen, dass ich die Live-CDs boten kann.
Das findet im anderen Thread statt.
Danke für die Hilfe hier.
Das DHCP-Problem ist gelöst, jetzt muss ich noch hinkriegen, dass ich die Live-CDs boten kann.
Das findet im anderen Thread statt.
Danke für die Hilfe hier.
Das DHCP-Problem ist gelöst,
Verrätst du uns auch noch was der entscheidende Punkt in der DHCP Konfig war ?! Wäre ja hilfreich für andere denn Live CDs booten via PXE ist ja doch recht interessant.Mit einem Windows Recovery System wie das der ct' funktioniert es auch.
https://www.heise.de/ct/ausgabe/2018-22-Im-Handumdrehen-ein-Notfallsyste ...
ip dhcp pool lokales-netz
network 10.0.0.0 255.255.255.0
bootfile pxelinux.0
next-server 10.0.0.115
default-router 10.0.0.254
option 42 ip 130.149.17.8
dns-server 10.0.0.254
option 67 ascii pxelinux.0
