Dear Sir,
I have point-point ethernet connections to my linux
boxes on which I am running Zebra OSPFD.
I am unable to understand the output of the tcpdump.
Please clarify the terms in the output.
The output of the command tcpdump on BOX 1 is as
follows: I have also shown a part of my network below.
14:0831.849801 eth0 M 192.168.2.2 > 224.0.0.5: OSPF
v2-hello 48: rtrid 192.168.4.2 backbone dr 192.168.2.1
bdr 192.168.2.1 [ttl1]
14:0831.849801 eth1 M 192.168.1.5 > 224.0.0.5: OSPF
v2-hello 48: rtrid 192.168.7.5 backbone dr 192.168.1.5
bdr 192.168.1.1 [ttl1]
14:0831.849802 eth1 > 192.168.1.1 > 224.0.0.5: OSPF
v2-hello 48: rtrid 192.168.2.1 backbone dr 192.168.1.5
bdr 192.168.1.1 [ttl1]
14:0831.849802 eth0 > 192.168.2.1 > 224.0.0.5: OSPF
v2-hello 48: backbone dr 192.168.2.2 bdr 192.168.2.1
[ttl1]
---------- ----------------
| BOX 2 | | BOX 3 |
---------- ----------------
eth0:192.168.1.2 =eth0:192.168.1.5
= =
= =
= =
= =
= =
-------------------
192.168.2.1|eth0 BOX 1 eth1|192.168.1.1
-------------------
Regards,
Sanjeev.
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