[c-nsp] How to tune multicast RPF checking?

[Thomas Kernen]

>
> > Starting with 6.2 you could configure PIX as IGMP proxy so GRE is
> > not needed
>
>  Thank you, I wasn't aware of this feature.
>
>  I tested the IGMP proxy feature with PIX 501 and it seemd to work. At
>  least it is able to transmit Palaces Over The World session and at
>  same time I can download files over http.
>
>  Is there any performance issues when the IGMP proxy feature is
>  enabled? There are some MPEG-2 multicast streams people here like to
>  receive. If there are five of those passing through a PIX 525 what
>  will happen? Will the firewall forward the packets easily? Will it
>  practically die?
>

Matti,

as an FYI I run a 501 at home and receive quite a bit of multicast
content (Internet or internal) with bitrates up to 8-10 Mbps without any
problems, I've done some testing with MPEG-2 HD streams @ 25Mbps but
there are some issues, not sure yet if related to the 501 or other
components in the decoding process on the terminal devices.

Thomas