Sorry, typo in frame maps below, now corrected. The config I put on the real routers were correct however. > From: [email protected] > To: [email protected] > Date: Mon, 28 May 2012 14:44:52 +0000 > Subject: [OSL | CCIE_RS] Multicast over NBMA Revisted and Retyped! > > > > > > No idea what happened to the formating of the last Email, so here it is > again, pasted from Word this time! Hope you can read it! > > Hello all, > > > > Ages ago, I posted a query regarding multicast and pim NBMA > mode on frame. Well, finally today, I > got back to doing another test on proctorlabs kit...and the suggested solution > STILL did not work! > > > > Again, this was a homemade lab: > > > > TOPOLOGY > > ------------- > > > > classic WB 2 topology of R2/R4/R5 being a frame hub and > spoke, R2 hub. Pim set up on all routers > and auto-rp RP and mapping agent live behing R5. > > > > > > R8 (RP) -> R7 (Mapping agent) -> R5 -> DLC502 -> > R2 -> DLCI 204 -> R4. > > > > All interfaces set to PIM SM. All can see each other as neighbours. R2 set > to be PIM DR on frame (suggestion from > last time I tried this!). R2 set for pim > NBMA mode on its frame interface. > > > > > > SYMPTOMS > > -------------- > > > > R8 can see rp mapping, R7 can see RP mapping, R5 can see RP > mapping, R2 can see RP mapping, R4 cannot. > > > > All these were configured: > > > > OSPF in point-to-multipoint mode on frame and broadcast on > LANs. Full IP connectivity within this > small cloud. > > PIM NBMA mode on R2 frame interface > > R2 PIM DR priority 0f 255, 0 on R4 and R5. > > > > Debug ip mpacket details and debug pim auto (forget exact > syntax but it is the auto-rp debug) > > > > Results: > > > > R4 is not receiving ANY multicast whatsoever. R2 is receiving auto-rp info, > but is not > sending back out its frame interface again to R4. > > > > My solution was to configure a GRE tunnel from R2 to R4, > move PIM onto that adjust static mroute accordingly. Yes I know, could have > used PPPoFr but that > was more typing! > > > > However, this to me seems like a frig. I thought the whole point of pim NBMA > mode is > that is...sort of...acted like "no ip split-horizon" does for > routing, and R2 should advertise the RP and mapping agent advertisements back > out its frame interface again. It just > did not do this..... > > > > Is my understanding flawed here, or have a stumbled across > one of those "a reload should fix that" things? > > > > > > Configs below: > > > > > > R2 > > -- > > > > ip multicast-routing > > ip pim autorp listener > > > > int ser0/1/0 > > encap frame > > no frame inverse > > ip address 10.1.1.1 255.255.255.0 > > frame map ip 10.1.1.1 204 broad > > frame map ip 10.1.1.4 204 > > frame map ip 10.1.1.5 205 broad > > ip ospf net point-to-multipoint > > ip ospf 1 area 0 > > ip pim sparse-mode > > ip pim nbma-mode > > ip pim dr-priority 255 > > > > R4 > > -- > > > > ip multicast-routing > > ip pim autorp listener > > > > int ser0/0/0 > > encap frame > > no frame inverse > > ip address 10.1.1.4 255.255.255.0 > > frame map ip 10.1.1.1 402 broad > > frame map ip 10.1.1.2 402 > > frame map ip 10.1.1.5 402 > > ip ospf net point-to-multipoint > > ip ospf 1 area 0 > > ip pim sparse-mode > > ip pim dr-pri 0 > > > > int f0/0 > > ip address 10.1.4.4 255.255.255.0 > > ip pim sparse-mode > > ip ospf 1 area 0 > > > > > > R5 > > --- > > > > ip multicast-routing > > ip pim autorp listener > > > > int ser0/1/0 > > encap frame > > no frame inverse > > ip address 10.1.1.5 255.255.255.0 > > frame map ip 10.1.1.1 502 broad > > frame map ip 10.1.1.4 502 > > frame map ip 10.1.1.2 502 > > ip ospf net point-to-multipoint > > ip ospf 1 area 0 > > ip pim sparse-mode > > ip pim dr-prior 0 > > > > int f0/0 > > ip address 10.1.5.5 255.255.255.0 > > ip ospf 1 area 0 > > descr RP and Mapping agent live out here..... > > > > > > Regards, George. > > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
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