From: Derek Pocoroba (dpocoroba@gmail.com)
Date: Thu Aug 16 2007 - 00:55:44 ART
Consecutive ACL's will work for auto-rp, yes
ip access-list standard PIM
per 224.0.0.0 3.255.255.255
is a valid example
-Derek
On 8/15/07, Bajo <bajoalex@gmail.com> wrote:
>
> 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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> >
> > _______________________________________________________________________
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> >
>
>
> --
> Kind Regards,
>
> Bajo
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