l2vpn-4----Page:3
1 2 3 4 5 6 7
|
Comments Addressed in v02 Comment: Snooping at PWs overwhelms PEs IGMP snooping Proposal: PEs to do IGMP proxy PIM Snooping Proxy behavior is used with PIM snooping on the PEs to reduce the amount of PIM traffic forwarded upstream The ideal solution would be for the C-Routers implementing PIM-refresh reduction. But at least in the near-term, providers cannot rely on C-routers to have this feature. Proposal: Rate limit the PIM JP and Hello refresh messages at down stream PEs Some details on the next slide Is employed only when PIM-refresh reduction is inactive. Is fairly light-weight and simple. The idea here is to send out the Hello/JP messages less frequently (definable by certain parameters and changing the Holddown timer) to ease the burden of PIM snooping on upstream PEs PIM-refresh reduction should be friendly to PIM snooping, otherwise, PIM Snooping will not work when refresh reduction is active. |