[c-nsp] Crash iBGP on 7600 during mVPN reconfiguration

[Youssef Bengelloun-Zahr]

Hello,

Any timeframe regarding the availability of SRE3 ? Sorry if my question is a little out of the subject :-)

Thanks.

Regards.



Le 12 oct. 2010 à 16:50, Artyom Viklenko <artem at aws-net.org.ua> a écrit :

> 12.10.2010 16:32, Anrey Teslenko пишет:
>> Hello all,
>> 
>> We are trying to implement multicast VPN in our network.
>> On PE routers which we use now installed 12.2 (33r) SRE2    IOS
>> The hardware platform is 7604 RSP720
>> 
>> The typical configuration was implemented on routers and was successful
>> tested, but
>> after finishing the tests, we were observed high cpu utilization on
>> bsr-candidate (not on RP)
>> and on it BGP neighbor, which don't participate in multicast routing.
>> 
>> However this no so badly how  the removal vrfs (no ip vrf) which participate
>> in MVPN.
>> We were observed crash of all iBGP session after this command was applied.
>> 
>> I find only the case CSCse41600 which nearest for my problem, but the router
>> not crashed, only iBGP.
>> Bgp sessions were cleared  but this don't help and only after full reload
>> problem was resolved.
>> Workaround (CSCse41600) doesn't help -- I trying delete MVPN step by step,
>> the first was replaced bgp configuration, then has removed ip pim  and ip
>> forwarding vrf from
>> all used interfaces, then "no multicast routing", only after that I began
>> remove configuration in vrf line by line.
>> However after deleting default tree configuration (no mdt default ) iBGP
>> sessions crashed  again.
>> 
>> 
>> Can someone please give me some hints to solve this problem?
>> Can it's not  good idea to use SRE2 for MVPN?
> 
> After upgrade from SRD4 to SRE2, I've got problems with MVPN.
> No iBGP crashes, but high cpu usage on RP. Setting limits on multicast
> fib-miss helped with high cpu, but forwarding of multicast streams
> not worked after all. Had not much time to evaluate further and
> decided to step back to SRD5 and all works fine.
> May be I'm wrong in something, but on SRD5 it works with the same
> configuration. I'm waiting SRE3 to test... :)
> 
>> 
>> 
>> Thanks in advance!
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> 
> 
> -- 
>           Sincerely yours,
>                            Artyom Viklenko.
> -------------------------------------------------------
> artem at aws-net.org.ua | http://www.aws-net.org.ua/~artem
> artem at viklenko.net   | JID: artem at jabber.aws-net.org.ua
> FreeBSD: The Power to Serve   -  http://www.freebsd.org
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