From: Sadiq Yakasai (sadiqtanko@gmail.com)
Date: Tue Feb 26 2008 - 13:37:28 ARST
Andy,
I understand where you are comin from. They could be used in a similar
fashion to achieve the same result (not getting the traffic to go out
an interface).But the way they are used to achieve the same result
differs.
By not allowing IGMP joins from an interface, you would not even have
this router send out a PIM join upstream towards the RP in sparse mode
PIM and hence you are controlling the MCast traffic flow for those
groups you have blocked in your IGMP filter access list.
Whereas directly using the MCast bounday acts on the actual traffic
destined for any MCast IP addresses (as well as filtering Auto-rp
messages).
HTH
Sadiq
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2008 - 16:54:49 ARST