Hi Phil,
As far as I can see, SSM would only be of specific help if the >255 groups were coming from >1 PE. You'd still have problems with >255 groups on 1 PE using SSM.
Even then I could use different data-mdt's for every PE in same VRF in SM mode or not?
The traffic will not flow via the RP, since all the PEs should have joined towards the other PEs for the default or data group in question. The issue is that some traffic might be sent to PEs which have no interest in it (if you have more active MVPN groups than data groups, or if it's flowing in the mdt default) but it will still flow on the source tree in the P-space, not the shared tree. Whether that's actually a problem depends on the bit rate of the traffic, number of PEs and types of links. Not the most helpful answer I'm afraid.
I just tested it in SM mode. What happens is that no more streams can be send because of the exhaustion of all data-mdt's. Switchover to data-mdt is configured to 1 and as soon as traffic arrives a data-mdt is tried to open and unfortunately fails therefore. The only solution as far as I can see is to do SSM without a data-mdt. Sure I could also use SM without a data-mdt but that would concentrate everything on the RP which would be the worst case of all. Or do I miss something? cheers, Christian _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
