RE: Practical Study2 Lab6: group-list doesn't work

From: Scott Morris (swm@emanon.com)
Date: Mon May 16 2005 - 15:26:45 GMT-3


What version of IOS are you using? It did actually work when that chapter
was written!

But always an interesting feature!

Scott

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
l.tosolini@chello.nl
Sent: Monday, May 16, 2005 12:33 PM
To: ccielab@groupstudy.com
Subject: Practical Study2 Lab6: group-list doesn't work

Hi group,
the group-list for R13 as suggested in the book doesn't work and r13 becomes
the RP for all 224.0.0.0/4 See here:
r13 loopback = 192.168.255.13
r5 loopback = 192.168.255.5
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
r13
ip pim send-rp-announce Loopback0 scope 16 group-list 8
access-list 13 deny 239.0.0.0 0.255.255.255
access-list 13 permit 224.0.0.0 15.255.255.255

r6#show ip pim rp mapping 238.1.1.1
PIM Group-to-RP Mappings
This system is an RP-mapping agent (Loopback0)

Group(s) 224.0.0.0/4
  RP 192.168.255.13 (?), v2v1
    Info source: 192.168.255.13 (?), elected via Auto-RP
         Uptime: 00:03:00, expires: 00:02:57 r6#show ip pim rp mapping
239.1.1.1 PIM Group-to-RP Mappings This system is an RP-mapping agent
(Loopback0)

Group(s) 224.0.0.0/4
  RP 192.168.255.13 (?), v2v1
    Info source: 192.168.255.13 (?), elected via Auto-RP
         Uptime: 00:03:04, expires: 00:02:53
Group(s) (-)239.0.0.0/8
  RP 192.168.255.13 (?), v2v1
    Info source: 192.168.255.13 (?), elected via Auto-RP
         Uptime: 00:03:04, expires: 00:02:52

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To achieve the goal of having R13 for 'all multicast groups, except
administratively scoped addresses' I had to rewrite the ACL in the following
funny way !! It seems that the 'deny' it is not taken correctly. Any idea?

r13
ip pim send-rp-announce Loopback0 scope 16 group-list 7 access-list 7 permit
224.0.0.0 0.255.255.255 access-list 7 permit 225.0.0.0 0.255.255.255
access-list 7 permit 226.0.0.0 0.255.255.255 access-list 7 permit 227.0.0.0
0.255.255.255 access-list 7 permit 228.0.0.0 0.255.255.255 access-list 7
permit 229.0.0.0 0.255.255.255 access-list 7 permit 230.0.0.0 0.255.255.255
access-list 7 permit 231.0.0.0 0.255.255.255 access-list 7 permit 232.0.0.0
0.255.255.255 access-list 7 permit 233.0.0.0 0.255.255.255 access-list 7
permit 234.0.0.0 0.255.255.255 access-list 7 permit 235.0.0.0 0.255.255.255
access-list 7 permit 236.0.0.0 0.255.255.255 access-list 7 permit 237.0.0.0
0.255.255.255 access-list 7 permit 238.0.0.0 0.255.255.255

r6#show ip pim rp mapping 238.1.1.1
PIM Group-to-RP Mappings
This system is an RP-mapping agent (Loopback0)

Group(s) 238.0.0.0/8
  RP 192.168.255.13 (?), v2v1
    Info source: 192.168.255.13 (?), elected via Auto-RP
         Uptime: 00:29:53, expires: 00:02:06 r6#show ip pim rp mapping
239.1.1.1 PIM Group-to-RP Mappings This system is an RP-mapping agent
(Loopback0)

Group(s) 239.0.0.0/8
  RP 192.168.255.5 (?), v2v1
    Info source: 192.168.255.5 (?), elected via Auto-RP
         Uptime: 00:30:15, expires: 00:02:41



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