Re: Today's MBone disaster, mbone@localhost, multicast-beta@localhost

[Bill Fenner <]

Jeff,

  Did you "clear ip mr" on the router after "inoculating" it?  The state
will stick around unless you clear it, and the IP filtering only keeps
you from being "re-infected" after clearing state.

  By the way, people running transit mrouted's can help slow the spread
of this "virus" by adding "name mcastrp 239.133.130.34/32" to the top
of their mrouted.conf, and then "boundary mcastrp" to their tunnel and
phyint configurations.

e.g.

name mcastrp 239.133.130.34/32
phyint le0 boundary mcastrp
phyint le1 boundary mcastrp
phyint le2 boundary mcastrp
tunnel 13.2.116.239 204.162.228.1 metric 1 threshold 32 boundary mcastrp

This will cause mrouted's to not forward the register packets destined for
the bogus group.  Of course, this is only necessary if you have Cisco PIM
routers on both sides of your mrouter.

  Bill