Disable PIM Assert Process

An alternative to disabling the PIM assert process might be to use an ACL to block PIMv2 Type 5 messages in/out to 224.0.0.2. Any ideas on how this ACL would look if it can be done?

Correction: 224.0.0.13 for PIMv2. 224.0.0.2 is PIMv1

I would recommend against blocking that multicast address as that would handicap any PIM communication coming in that interface. I know of no way to disable just the Assert messages in IOS.

neteng

on a related problem - anyone know how to stop IOS sending out multicasts to

it bhaves OK with a pure IOS environment - but causes lots of "invalid RP join" messages when it propagates to other PIM v2 / BSR type devices...

Stephen,

I think you'll need to implement the 'ip multicast boundary filter-autorp' command. It works as a bi-directional ACL to block auto- rp traffic for the multicast groups in the ACL. Let's say you want to stop the traffic from flowing through ethernet0/0:

ACL for all multicast groups: access-list 1 permit 224.0.0.0. 15.255.255.255

interface e0/0 ip multicast boundary 1 filter-autorp

HTH, neteng

OK - thanks for that - i will give it a try.