Saturday, March 21, 2009

IE CoD Service Provider Multicast

Since Multicast is obviously my weakest point now, I've decided to review the IE CoD for Multicast.

1. Don't touch mVPN until each PIM domain has been verified
2. Use debug ip pim to find "RPF lookup failed" messages
3. Enable pim between msdp peers so rp information can be exchanged
4. For multicast testing, getting a ping reply is not a great test. It is only really necessary to verify the downstream traffic is getting to the host. To get icmp replies, it may be necessary to enable multicast routing on the destination and enabling pim there, ensuring it is not the pim dr.
5. mBGP is solely for the purpose of advertising source ips for rpf lookup. Verify using show ip rpf.

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