[c-nsp] OSPF over PPPoATM

Daniele Orlandi daniele at orlandi.com
Sat Oct 18 09:19:01 EDT 2008


Hello,

Someone please help me spotting out what so weird is happening :)

I have a 2800 with an ADSL WIC connected to a 7200 with a STM-1 ATM.

The 2800 is sending hellos on its virtual access interface, the 7200 is 
receiving those hellos and sending his, but the 2800 isn't receiving the 
hellos.

2800
----
Oct 18 15:14:10.813: OSPF: Send hello to 224.0.0.5 area 0 on Virtual-Access1.1 
from 62.212.6.191



7200
----
Oct 18 15:13:50.822: OSPF: Rcv hello from 62.212.3.243 area 0 from Virtual-
Access2.139 62.212.6.191
Oct 18 15:13:50.822: OSPF: Send immediate hello to nbr 62.212.3.243, src 
address 62.212.6.191, on Virtual-Access2.139
Oct 18 15:14:30.874: OSPF: Send hello to 224.0.0.5 area 0 on Virtual-
Access2.139 from 0.0.0.0

#sh ip ospf neighbor
Neighbor ID     Pri   State           Dead Time   Address         Interface
62.212.3.243      0   INIT/  -        00:00:37    62.212.6.191    Virtual-
Access2.139
...

The 2800 is also connected to the 7200 via a frame-relay to ATM PVC on which 
OSPF is running fine (but not IPv6, but that's another story).

What is happening to those hello packets? Who is eating them?

Thank you,
Bye,

-- 
  Daniele Orlandi							つづく



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