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

[Rob Taylor]

SRE3 is planned for late Nov/Early Dec currently.

On 10/12/2010 11:26 AM, Youssef Bengelloun-Zahr wrote:
> 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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>>      
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