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

[Artyom Viklenko]

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.
-------------------------------------------------------
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