[c-nsp] OSPF interoperability with ME6524 and RS15800

[Liviu Pislaru]

hello,

OSPF must send acknowledgment of each newly received link-state 
advertisement (LSA). It does this by sending LSA packets. LSAs are 
retransmitted until they are acknowledged. The link-state retransmit 
interval defines the time between retransmissions. The default interval in 5 
seconds. Did  you use the command "ip ospf retransmit-interval" to modifie 
the default value of 5 seconds ?

What is the output of the commands:
RS15800# show ip ospf retransmission-list GE0/0/4
ME6524# show ip ospf retransmission-list Ge1/25

If you have 2 links with equal cost then the traffic is load-balanced. What 
do you meen by "then, we have no works" ?  If you have problems with one 
link you still must have OSPF neighbors in FULL state on the operational 
one?

What is the output of the commands:
RS15800#sh ip ospf neighbor
when you have problems ?

Did you try to eliminate layer 1 issues ? Change patch cords, modules or 
switch ports ? Did you see any errors on this ports ?

What is the output of the commands:
RS15800#sh int GE0/0/4 | i err
ME6524#sh int Ge1/25 | i err

Just currious: did you use MPLS traffic on this links ?

--
liviu.

----- Original Message ----- 
From: "Hiromasa Sekiguchi" <hiromasa.sekiguchi at ctc-g.co.jp>
To: <cisco-nsp at puck.nether.net>
Sent: Friday, April 06, 2007 4:33 AM
Subject: [c-nsp] OSPF interoperability with ME6524 and RS15800


> Hello,
>
> We have some problems about OSPF connection between ME6524 and RS15800.
>
> +--------+GE1/25        GE0/0/4+---------+
> | ME6524 |=====================| RS15800 |
> +--------+GE1/26        GE0/0/5+---------+
>
> They have about 700 OSPF routes.
> The ME6524 has two links of cost 10(ECMP to RS15800).
>
> Sometimes, many OSPF retransmit traps was generate from RS15800.
> It was generate only between GE1/25 and GE0/0/4.
> Then, we have no works...
>
> If it is interoperability issue, are there any similar phenomenon?
> What is the cause of this phenomenon?
>
> Please help us!!
>
> Regards,
> Hiromasa
>


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