All things related to multicast

[Bill Nickless <>]

-----BEGIN PGP SIGNED MESSAGE-----

At 09:58 AM 2/16/2001 -0500, Roy D. Hockett wrote:
>         I am seeking practical advice on both RP with sparse mode, and group
>filtering.
>
>         Of those that have deployed multicast in enterprises enviorments, 
> how
>did you setup your RPs. I remember, someone, talking about using a
>private IP address on a loopback interface on each router. How has
>auto-RP worked for those cisco shops out there?

MSDP RPF rules are a lot simpler when the RP is on your primary BGP 
NLRI=Multicast speaker.  My experience has been that things are a lot 
easier when you use a loopback address on your border router as your RP 
address.  This RP address *MUST* be advertised in your BGP NLRI=Multicast 
announcement, as an RFC-1918 address will NOT work with MSDP.  Remember, 
MSDP RPF checks are on the address of the RP.

We statically configure the RP address in all of our other routers.  But 
other people have had good luck with auto-RP.

See my web page

  http://www-fp.mcs.anl.gov/~nickless/MBGP+PIMSM+MSDP_files/v3_document.htm

for an outline of how PIM-SM, MSDP, and BGP NLRI=Multicast work together.


>         What multicast groups have you filtered on your borders to the
>internet, and other organizations?

     deny ip any host 224.0.2.2 (254021 matches)
     deny ip any host 224.0.1.3
     deny ip any host 224.0.1.24 (116083 matches)
     deny ip any host 224.0.1.22 (89860 matches)
     deny ip any host 224.0.1.2 (703864 matches)
     deny ip any host 224.0.1.35 (16909 matches)
     deny ip any host 224.0.1.60 (169589 matches)
     deny ip any host 224.0.1.39
     deny ip any host 224.0.1.40
     deny ip any 239.0.0.0 0.255.255.255 (31241 matches)

There's also a group used by Norton Ghost that I should be filtering, but I 
don't remember what it is.

>Thanks,
>-Roy

===
Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252 7390
PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74 F7     


-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>

iQCVAwUBOo1RzKwgm7ipJDXBAQFWrQP/ZGMxmyGvnE5ecN0uBFXo47G+4AIWrWe/
yg4y/egjQuroAw9xBfN60eQNGUnb3dGVxTrQYThjUueOpoQufgHHn9W3XYVzXovY
aBhDBhBDyWAMd1qjRmqefZY67S1mgcRllidEuWtNc8eDt2xkATgKaIhojr8Xafmh
QiTMihwfKEU=
=+b4C
-----END PGP SIGNATURE-----