From: Bajo (bajoalex@gmail.com)
Date: Wed Aug 15 2007 - 22:40:28 ART
Agree Derek,
Am about to lab this but according to Williamson's Multicast book, the
hash value for the group has to be consecutive.......
On 8/15/07, Derek Pocoroba <dpocoroba@gmail.com> wrote:
> I dont think you can get this granular when it comes to filtering the
> announcements with auto-rp. Basically the RP will announce itself for
> 224.0.0.0/4. I have seen other tasks asking to use the minimal amount of
> lines needed on the ACL. In those cases though you they were usually
> sequential groups. however in this case you cant use the ODD / EVEN ACL's.
>
> -Derek
> CCIE #18559
>
> On 8/15/07, Joseph Brunner <joe@affirmedsystems.com> wrote:
> >
> > Are 150.1.1.1, and 150.1.2.2 known via the routing table on R3?
> >
> > Do all loopback interfaces have "ip pim sparse-mode" configured?
> >
> > Do a debug ip mpacket detail on R3, keep it running for a bit and post it.
> >
> > thanks
> >
> > Joe
> >
> >
> > -----Original Message-----
> > From: Prasad Shemrudkar (pshemrud) [mailto:pshemrud@cisco.com]
> > Sent: Wednesday, August 15, 2007 6:19 PM
> > To: Joseph Brunner; Cisco certification
> > Subject: RE: AutoRP filter-list
> >
> > 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
> >
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> >
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-- Kind Regards,Bajo
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