[j-nsp] OSPF log messages

[Robert Walton]

Hi,

	I'm seeing Hello packets being exchanged no problem however the when i trace the database-description packets i see the following continuously in the logs.

Aug 16 17:20:53 OSPF resend last DBD to 217.27.24.34
Aug 16 17:20:53 OSPF resend last DBD to 217.27.24.44
Aug 16 17:20:53 OSPF sent DbD 217.27.24.45 -> 217.27.24.34 (fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:53   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:53   checksum 0x0, authtype 0
Aug 16 17:20:53   options 0x42, i 1, m 1, ms 1, seq 0x926fe06b, mtu 1500
Aug 16 17:20:53 OSPF sent DbD 217.27.24.45 -> 217.27.24.44 (fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:53   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:53   checksum 0x0, authtype 0
Aug 16 17:20:53   options 0x42, i 1, m 1, ms 1, seq 0x926ea536, mtu 1500
Aug 16 17:20:58 OSPF resend last DBD to 217.27.24.34
Aug 16 17:20:58 OSPF sent DbD 217.27.24.45 -> 217.27.24.34 (fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:58   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:58   checksum 0x0, authtype 0
Aug 16 17:20:58   options 0x42, i 1, m 1, ms 1, seq 0x926fe06b, mtu 1500
Aug 16 17:20:58 OSPF resend last DBD to 217.27.24.44
Aug 16 17:20:58 OSPF sent DbD 217.27.24.45 -> 217.27.24.44 (fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:58   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:58   checksum 0x0, authtype 0
Aug 16 17:20:58   options 0x42, i 1, m 1, ms 1, seq 0x926ea536, mtu 1500
Aug 16 17:21:01 OSPF resend last DBD to 217.27.24.34

I've checked the MTU at both ends and they are fine so there shouldn't be a problem of one neighbor sending DBD's larger than the MTU... I've also performed large pings to all adjacencies.

waltonro at FFALCR002A> ping 217.27.24.34 size 10000
PING 217.27.24.34 (217.27.24.34): 10000 data bytes
10008 bytes from 217.27.24.34: icmp_seq=0 ttl=255 time=29.623 ms
10008 bytes from 217.27.24.34: icmp_seq=1 ttl=255 time=17.913 ms
10008 bytes from 217.27.24.34: icmp_seq=2 ttl=255 time=17.699 ms
10008 bytes from 217.27.24.34: icmp_seq=3 ttl=255 time=17.733 ms
10008 bytes from 217.27.24.34: icmp_seq=4 ttl=255 time=18.050 ms
10008 bytes from 217.27.24.34: icmp_seq=5 ttl=255 time=27.562 ms
10008 bytes from 217.27.24.34: icmp_seq=6 ttl=255 time=17.812 ms
^C
--- 217.27.24.34 ping statistics ---
8 packets transmitted, 7 packets received, 12% packet loss
round-trip min/avg/max/stddev = 17.699/20.913/29.623/4.889 ms

waltonro at FFALCR002A> ping 217.27.24.44 size 10000
PING 217.27.24.44 (217.27.24.44): 10000 data bytes
10008 bytes from 217.27.24.44: icmp_seq=0 ttl=255 time=19.937 ms
10008 bytes from 217.27.24.44: icmp_seq=1 ttl=255 time=17.728 ms
10008 bytes from 217.27.24.44: icmp_seq=2 ttl=255 time=17.455 ms
10008 bytes from 217.27.24.44: icmp_seq=3 ttl=255 time=17.621 ms
^C
--- 217.27.24.44 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max/stddev = 17.455/18.185/19.937/1.016 ms

So there shouldn't be any layer-2 issues, can anyone point me in the direction of where i can go from here??

cheers,
Rob

-----Original Message-----
From: Jody Holmes [mailto:skwire at skwire.net]
Sent: 16 August 2004 09:26
To: Robert Walton
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] OSPF log messages


*
Quoting "Robert Walton" <robert.walton at FFastFill.com>
@ (8/16/2004 2:18:35 AM):

> Quick question for you OSPf experts, what does the following log message mean?
> [Time stamp] OSPF periodic xmit from w.x.y.z to 224.0.0.5 (IFL 78)

That address is the AllOSPFRouters multicast address.  OSPF Hello
packets are sent out on this address.  The only time Hello packets are
unicast is on an NBMA segment.


-- 
Jody Holmes   [~]  |  "Have no fear of perfection --
skwire at skwire.net  |   you'll never reach it."  S. Dali




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