Hi all,
I have the answer!
Wow, just when you think you are starting to get comfortable with a
technology, it turns around and bites you on the bum!! A lesson for us all!
I’m going to leave this on the forum for a day or so, in
case anyone else wants to have a crack at solving it.
George.
> From: [email protected]
> To: [email protected]
> Date: Mon, 28 May 2012 18:53:52 +0000
> Subject: [OSL | CCIE_RS] Multicast over NBMA Revisted and Retyped and typo
> corrected!
>
>
> 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
>
> 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
Are you a CCNP or CCIE and looking for a job? Check out
www.PlatinumPlacement.com
http://onlinestudylist.com/mailman/listinfo/ccie_rs
