From: Roman Rodichev (roman@iementor.com)
Date: Sun Jul 15 2007 - 21:25:56 ART
That behavior actually makes very good sense, not sure why you are confused
about it. How else would IOS build an RP announcement for 226.0.0.0 -
238.255.255.255 range using "/" notation? The only way to do it is to send
advertisements containing your ACL entries. The first two are "deny" and are
sent with (-) which means "deny".
Roman Rodichev
5xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider)
Instructor, Content Developer
ieMentor Corporation http://www.iementor.com
Y!M: roman7927
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Gregory Gombas
Sent: Sunday, July 15, 2007 7:19 PM
To: Group study
Subject: Auto RP filtering
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
This archive was generated by hypermail 2.1.4 : Sat Aug 18 2007 - 08:17:41 ART