Hello, I am also facing the same issue as Mark. Just consider the same topology and configuration of what Mark has done.
Sometimes im able to ping from R1 to R3, sometimes not. sometimes ping after 20 pakets. and also unable to ping from R3 to groups. Can someone confirm me what is the default Source, Sending router will take when it pings to group withought any source command. I checked by default it takes Lo IP, and what if you have not configured 'ip pim sparse-mode' on Lo, then your few packets gets drop. Please correct me on above issue, as since last 3 days I am trying to solve this issue. If I run the same topology on dynamips then it works fine without any issue, but If do on live router, facing lots of issue, not sure why ? Regards, Sandip Rathod ________________________________ From: Rick Mur <[email protected]> To: Bryan Bartik <[email protected]> Cc: [email protected] Sent: Wednesday, August 19, 2009 2:12:17 PM Subject: Re: [OSL | CCIE_RS] rpf failure Mark, Can you also along with the information Bryan requested, check if you see if auto-rp converged properly? By issuing a 'show ip pim rp mapping' on each router. Check the RPF information available with 'show ip rpf' on R3 of the router that has the connectivity issues. -- Regards, Rick Mur CCIE2 #21946 (R&S / Service Provider) Juniper JNCIA-ER & JNCIA-EX MCSA:Messaging, MCSE Sr. Support Engineer – IPexpert, Inc. URL: http://www.IPexpert.com/ On 19 aug 2009, at 23:08, Bryan Bartik wrote: Mark, > >R3 is the one that has the joins, but you say R3 cannot ping the groups? Is >this correct? Or did you mean R1? > >Also, are they any other connections between these routers? > >What does show ip pim mroute look like on R2 and R3 after trying to ping from >R1? > > >On Wed, Aug 19, 2009 at 1:54 PM, Mark Matters <[email protected]> wrote: > >I have an rpf issue I am trying to resolve. >> >>I have 3 routers ip multicast routing, ip pim sparse, Autorp and ip pim >>autorp listener configured. >> >>I can ping the igmp groups from r1 and r2 but I can not ping the groups from >>r3. The groups are configured on r3. Looking at it again I sometimes the >>pings will work from R1 and sometimes they do not. r3 f0/1 was saying it's >>not an rfp interface. I added a mroute ong r3 pointing to r2 and it did not >>do anything. I added an mroute pointing to f0/1 on r3 and it did not do >>anything. Ip v4 pings to all interfaces work fine, so no unicast routing >>issues. >> >> >>r1, r2 and r3 and connected to each other via frame-relay. The fast ethernets >>all go to different vlans. >> >> >>r1 - >>ip pim autorp listener >> >>f0/0 >>ip pim sparse mode >>ip pim dr-priority 0 >> >>f0/1 >>ip pim sparse mode >>ip pim dr-priority 0 >> >>s0/0 (fr physical) >>ip pim sparse mode >>ip pim dr-priority 0 >> >> >>r2 - hub >>ip pim autorp listener >> >> f0/0 >>ip pim sparse mode >>ip pim dr-priority 255 >> >>loop0 >>ip pim sparse mode >> >>s0/0 fr hub - physical int >>ip pim dr-priority 255 >>ip pim nbma >>ip pim sparse mode >> >>ip pim send-rp-announce Loopback0 scope 16 group-list 1 >>ip pim send-rp-discovery Loopback0 scope 16 >> >>Standard IP access list 1 >> 10 permit 224.24..24.24 >> 20 permit 224.32.32.32 >> >> >>r3 >>ip pim autorp listener >> >>f0/0 >>ip pim sparse mode >>ip pim dr-priority 0 >> >>f0/1 >>ip pim dr-priority 0 >>ip pim sparse mode >> igmp join 224.24.24.24 >> igmp join 224.32.32.32 >> >>s0/0 (fr multipoint) >>ip pim sparse mode >> ip pim dr-priority 0 >> >> >>Any idea's? >> >>_______________________________________________ >>For more information regarding industry leading CCIE Lab training, please >>visit www.ipexpert.com >> >> > > >-- >Bryan Bartik >CCIE #23707 (R&S), CCNP >Sr. Support Engineer - IPexpert, Inc. >URL: http://www.IPexpert.com >_______________________________________________ >For more information regarding industry leading CCIE Lab training, please >visit www.ipexpert.com >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
