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

[Anrey Teslenko]

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?


Thanks in advance!