From: Prasad Shemrudkar (pshemrud) (pshemrud@cisco.com)
Date: Wed Aug 15 2007 - 19:18:51 ART
Hey Joseph,
Sorry, my fault I should have given the whole picture at the first
instance itself, but thought I was messing it up in some very basic ACL
config, hence limited myself. Any case, below the full picture:
Running sparse mode, with autorp-listner on all the 3 routers.
R3:
!
ip pim autorp listener
ip pim send-rp-discovery Loopback0 scope 32
ip pim rp-announce-filter rp-list R1 group-list EVEN
ip pim rp-announce-filter rp-list R2 group-list ODD
!
!
ip access-list standard EVEN
permit 0.0.0.0 254.255.255.255
ip access-list standard ODD
permit 1.0.0.0 254.255.255.255
ip access-list standard R1
permit 150.1.1.1
ip access-list standard R2
permit 150.1.2.2
!
!
R2:
!
ip pim autorp listener
ip pim send-rp-announce Loopback0 scope 16 group-list ODD
!
!
ip access-list standard ODD
permit 1.0.0.0 254.255.255.255
!
R1:
!
ip pim autorp listener
ip pim send-rp-announce Loopback0 scope 16 group-list EVEN
!
!
ip access-list standard EVEN
permit 0.0.0.0 254.255.255.255
!
!
Below a few debug and show commands output:
Rack1R3(config-std-nacl)#
05:14:09: Auto-RP(0): Received RP-announce, from 150.1.1.1, RP_cnt 1, ht
181
05:14:09: Auto-RP(0): Received RP-announce, from 150.1.1.1, RP_cnt 1, ht
181
Rack1R3(config-std-nacl)#
05:14:23: Auto-RP(0): Build RP-Discovery packet
Rack1R3(config-std-nacl)#
05:14:39: Auto-RP(0): Received RP-announce, from 150.1.2.2, RP_cnt 1, ht
181
05:14:39: Auto-RP(0): Filtered 224.0.0.0/4 for RP 150.1.2.2
05:14:39: Auto-RP(0): Received RP-announce, from 150.1.2.2, RP_cnt 1, ht
181
05:14:39: Auto-RP(0): Filtered 224.0.0.0/4 for RP 150.1.2.2
Rack1R3(config-std-nacl)#do sh ip pim rp ma
PIM Group-to-RP Mappings
This system is an RP-mapping agent (Loopback0)
Rack1R3(config-std-nacl)#
TIA,
Prasad
-----Original Message-----
From: Joseph Brunner [mailto:joe@affirmedsystems.com]
Sent: Thursday, August 16, 2007 3:37 AM
To: Prasad Shemrudkar (pshemrud); 'Cisco certification'
Subject: RE: AutoRP filter-list
Please post the rest of the config... we'll hammer it out and see what's
wrong... those are first octet odd/evens...
Are you running sparse mode, dense mode, or sparse-dense mode on the
interfaces?
If you are running sparse-mode did you remember to add
"ip pim auto-rp listener"?
How are you seeing failure?
Did you do "show ip pim rp" from the MA?
-Joe
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Prasad Shemrudkar (pshemrud)
Sent: Wednesday, August 15, 2007 5:39 PM
To: Cisco certification
Subject: AutoRP filter-list
Hi,
R1, R2 and R3 are running auto-rp. R3 is the MA with R1 and R2 being the
candidate RPs. Task requires you to configure R3 to map first octet odd
to R2 and first octet even to R1.
I am using the following group-list on all 3:
ip access-list standard EVEN
permit 0.0.0.0 254.255.255.255
ip access-list standard ODD
permit 1.0.0.0 254.255.255.255
but the MA fails to map the discovery packets. I do not understand
what's wrong with the ACL?
Prasad
This archive was generated by hypermail 2.1.4 : Sat Sep 01 2007 - 11:32:11 ART