Auto RP filtering

From: Gregory Gombas (ggombas@gmail.com)
Date: Sun Jul 15 2007 - 21:18:50 ART


I want my RP to announce the following groups using the least amount of lines:
226.0.0.0 - 238.255.255.255.

Here is what my ACL looks like:

access-list 1 deny 224.0.0.0 1.255.255.255
access-list 1 deny 239.0.0.0 0.255.255.255
access-list 1 permit 224.0.0.0 15.255.255.255

ip pim send-rp-announce Loopback0 scope 16 group-list 1

But when it advertises the groups I see following debug:

*Mar 21 04:20:27.331: Auto-RP(0): Build announce entry for (-)(224.0.0.0/7)
*Mar 21 04:20:27.331: Auto-RP(0): Build announce entry for (-)(239.0.0.0/8)
*Mar 21 04:20:27.331: Auto-RP(0): Build announce entry for (224.0.0.0/4)

Can someone tell me what the significance of the minus sign (-) that
precedes the multicast address does?

Thanks,
Greg



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