Re: Sparse Mode Multicast on NBMA with main interfaces at Hub

From: Anant Tamgole (anant.tamgole@gmail.com)
Date: Sun Aug 17 2008 - 20:49:25 ART


Here is the config paste

Below is the configuration.

Pre-conditions
--------------------
R1 is Hub and R2,R3 spokes.
No subinterfaces are to be used
OSPF type NBMA is to be used
PIM Join is on R3 e0/1
========================

R1 Serial1/0 config
-------------------
Rack02R1(config-if)#do sh run int s1/0
Building configuration...
Current configuration : 418 bytes
!
interface Serial1/0
 ip address 2.2.123.1 255.255.255.0
 ip pim nbma-mode
 ip pim sparse-mode
 encapsulation frame-relay
 ip ospf priority 255
 no ip mroute-cache
 serial restart-delay 0
 frame-relay map ip 2.2.123.2 102 broadcast
 frame-relay map ip 2.2.123.3 103 broadcast
 no frame-relay inverse-arp
end

R1 Lo0 config
-------------
Rack02R1(config-if)#do sh run int lo0
Building configuration...
Current configuration : 83 bytes
!
interface Loopback0
 ip address 2.2.1.1 255.255.255.255
 ip pim sparse-mode
end

RP Config on R1
---------------
Rack02R1#sh run | i rp
ip pim send-rp-announce Loopback0 scope 10 interval 10
ip pim send-rp-discovery Loopback0 scope 10 interval 10

R1 OSPF Config
-----------------------
Rack02R1(config-if)#do sh run | b r o
router ospf 1
 router-id 2.2.1.1
 log-adjacency-changes
 network 2.2.0.0 0.0.255.255 area 0
 neighbor 2.2.123.2
 neighbor 2.2.123.3
===========================================

R2 config

Serial 1/0
-------------
Rack02R2(config-if)#do sh run int s1/0
Building configuration...
Current configuration : 342 bytes
!
interface Serial1/0
 ip address 2.2.123.2 255.255.255.0
 ip pim sparse-mode
 encapsulation frame-relay
 ip ospf priority 0
 serial restart-delay 0
 frame-relay map ip 2.2.123.1 201 broadcast
 frame-relay map ip 2.2.123.3 201 broadcast
 no frame-relay inverse-arp

end

R2 OSPF config
---------------
Rack02R2(config-if)#do sh run | b r o
router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 network 2.2.0.0 0.0.255.255 area 0
=========================================

R3 Config

Serial 1/0 config
------------------
Rack02R3(config-if)#do sh run int s1/0
Building configuration...
Current configuration : 346 bytes
!
interface Serial1/0
 ip address 2.2.123.3 255.255.255.0
  ip pim sparse-mode
 encapsulation frame-relay
 ip ospf priority 0
 serial restart-delay 0
 frame-relay map ip 2.2.123.2 301 broadcast
 frame-relay map ip 2.2.123.1 301 broadcast
 no frame-relay inverse-arp
end

R3's PIM Join config
--------------------
Rack02R3(config-if)#do sh run int e0/1
Building configuration...
Current configuration : 128 bytes
!
interface Ethernet0/1
 ip address 150.2.2.1 255.255.255.0
 ip pim sparse-mode
 ip igmp join-group 224.2.2.2
 full-duplex
end

R3;s OSPF Config
-----------------
Rack02R3(config-if)#do sh run | b r o
router ospf 1
 router-id 2.2.3.3
 log-adjacency-changes
 network 2.2.0.0 0.0.255.255 area 0
 network 150.2.2.1 0.0.0.0 area 0
!
==================================

Anant

On 8/17/08, Hobbs <deadheadblues@gmail.com> wrote:
>
> It should work. I have topology similar to yours and hub and spoke can both
> ping the group address on the other spoke. Hub is the RP and the mapping
> agent.
>
> I don't think you need auto-rp listener because the spoke are directly
> connected to the hub. If you had another level of up/downstream routers you
> would need it.
>
> can you post configs?
>
> On Sun, Aug 17, 2008 at 9:59 AM, Anant Tamgole <anant.tamgole@gmail.com>wrote:
>
>> Hi,
>>
>> Yes. Normal ping works.
>>
>> As I understand, autorp listener is required to forward dense mode traffic
>> of auto-rp group.
>> In this case I already have RP mappings in all 3 routers without autorp
>> listerner command.
>>
>> Anant
>>
>> On Sun, Aug 17, 2008 at 5:26 PM, Sam Z <uniqsam@gmail.com> wrote:
>>
>> > As someone suggested earlier, here you are trying to run auto-rp with
>> > interfaces in sparse-mode.
>> > You have to either,
>> > change all the interfaces to "ip pim sparse-dense" OR
>> > configure "ip pim autorp listener" in all routers for this to work.
>> > BTW, can you ping interface IP addresses end-to-end (I mean normal
>> ping)?
>> >
>> > Sam.
>> >
>> > On Sun, Aug 17, 2008 at 4:39 AM, Anant Tamgole <anant.tamgole@gmail.com
>> >wrote:
>> >
>> >> Hi,
>> >>
>> >> Has anyone tried the scenario.
>> >>
>> >> Anant
>> >>
>> >> On Thu, Aug 14, 2008 at 7:27 AM, Anant Tamgole <
>> anant.tamgole@gmail.com
>> >> >wrote:
>> >>
>> >> > Hi guys,
>> >> >
>> >> > Any positive results of trying the below scenario.
>> >> >
>> >> > Anant
>> >> >
>> >> > On Tue, Aug 12, 2008 at 12:28 PM, Anant Tamgole <
>> >> anant.tamgole@gmail.com>wrote:
>> >> >
>> >> >> Sorry friends, I was away.
>> >> >>
>> >> >> Below is the configuration.
>> >> >>
>> >> >> Pre-conditions
>> >> >> --------------------
>> >> >> R1 is Hub and R2,R3 spokes.
>> >> >> No subinterfaces are to be used
>> >> >> OSPF type NBMA is to be used
>> >> >> PIM Join is on R3 e0/1
>> >> >> ========================
>> >> >>
>> >> >> R1 Serial1/0 config
>> >> >> -------------------
>> >> >> Rack02R1(config-if)#do sh run int s1/0
>> >> >> Building configuration...
>> >> >> Current configuration : 418 bytes
>> >> >> !
>> >> >> interface Serial1/0
>> >> >> ip address 2.2.123.1 255.255.255.0
>> >> >> ip pim nbma-mode
>> >> >> ip pim sparse-mode
>> >> >> encapsulation frame-relay
>> >> >> ip ospf priority 255
>> >> >> serial restart-delay 0
>> >> >> frame-relay map ip 2.2.123.2 102 broadcast
>> >> >> frame-relay map ip 2.2.123.3 103 broadcast
>> >> >> no frame-relay inverse-arp
>> >> >> end
>> >> >>
>> >> >> R1 Lo0 config
>> >> >> -------------
>> >> >> Rack02R1(config-if)#do sh run int lo0
>> >> >> Building configuration...
>> >> >> Current configuration : 83 bytes
>> >> >> !
>> >> >> interface Loopback0
>> >> >> ip address 2.2.1.1 255.255.255.255
>> >> >> ip pim sparse-mode
>> >> >> end
>> >> >> RP Config on R1
>> >> >> ---------------
>> >> >> Rack02R1#sh run | i rp
>> >> >> ip pim send-rp-announce Loopback0 scope 10 interval 10
>> >> >> ip pim send-rp-discovery Loopback0 scope 10 interval 10
>> >> >>
>> >> >> R1 OSPF Config
>> >> >> -----------------------
>> >> >> Rack02R1(config-if)#do sh run | b r o
>> >> >> router ospf 1
>> >> >> router-id 2.2.1.1
>> >> >> log-adjacency-changes
>> >> >> network 2.2.0.0 0.0.255.255 area 0
>> >> >> neighbor 2.2.123.2
>> >> >> neighbor 2.2.123.3
>> >> >> ===========================================
>> >> >>
>> >> >> R2 config
>> >> >>
>> >> >> Serial 1/0
>> >> >> -------------
>> >> >> Rack02R2(config-if)#do sh run int s1/0
>> >> >> Building configuration...
>> >> >> Current configuration : 342 bytes
>> >> >> !
>> >> >> interface Serial1/0
>> >> >> ip address 2.2.123.2 255.255.255.0
>> >> >> ip pim sparse-mode
>> >> >> encapsulation frame-relay
>> >> >> ip ospf priority 0
>> >> >> serial restart-delay 0
>> >> >> frame-relay map ip 2.2.123.1 201 broadcast
>> >> >> frame-relay map ip 2.2.123.3 201 broadcast
>> >> >> no frame-relay inverse-arp
>> >> >>
>> >> >> end
>> >> >>
>> >> >> R2 OSPF config
>> >> >> ---------------
>> >> >> Rack02R2(config-if)#do sh run | b r o
>> >> >> router ospf 1
>> >> >> router-id 2.2.2.2
>> >> >> log-adjacency-changes
>> >> >> network 2.2.0.0 0.0.255.255 area 0
>> >> >> =========================================
>> >> >>
>> >> >> R3 Config
>> >> >>
>> >> >> Serial 1/0 config
>> >> >> ------------------
>> >> >> Rack02R3(config-if)#do sh run int s1/0
>> >> >> Building configuration...
>> >> >> Current configuration : 346 bytes
>> >> >> !
>> >> >> interface Serial1/0
>> >> >> ip address 2.2.123.3 255.255.255.0
>> >> >> ip pim sparse-mode
>> >> >> encapsulation frame-relay
>> >> >> ip ospf priority 0
>> >> >> serial restart-delay 0
>> >> >> frame-relay map ip 2.2.123.2 301 broadcast
>> >> >> frame-relay map ip 2.2.123.1 301 broadcast
>> >> >> no frame-relay inverse-arp
>> >> >> end
>> >> >>
>> >> >> R3's PIM Join config
>> >> >> --------------------
>> >> >> Rack02R3(config-if)#do sh run int e0/1
>> >> >> Building configuration...
>> >> >> Current configuration : 128 bytes
>> >> >> !
>> >> >> interface Ethernet0/1
>> >> >> ip address 150.2.2.1 255.255.255.0
>> >> >> ip pim sparse-mode
>> >> >> ip igmp join-group 224.2.2.2
>> >> >> full-duplex
>> >> >> end
>> >> >>
>> >> >> R3;s OSPF Config
>> >> >> -----------------
>> >> >> Rack02R3(config-if)#do sh run | b r o
>> >> >> router ospf 1
>> >> >> router-id 2.2.3.3
>> >> >> log-adjacency-changes
>> >> >> network 2.2.0.0 0.0.255.255 area 0
>> >> >> network 150.2.2.1 0.0.0.0 area 0
>> >> >> !
>> >> >> ==================================
>> >> >> Anant
>> >> >>
>> >> >> On Sun, Aug 10, 2008 at 12:57 AM, darth router <
>> >> darklordrouter@gmail.com>wrote:
>> >> >>
>> >> >>> Post your configurations, and it will be easy for us to
>> troubleshoot
>> >> it.
>> >> >>>
>> >> >>>
>> >> >>> On Fri, Aug 8, 2008 at 3:48 PM, Anant Tamgole <
>> >> anant.tamgole@gmail.com>wrote:
>> >> >>>
>> >> >>>> Also, I have RP mappings in both spokes (without auto-listener
>> >> commnad
>> >> >>>> on
>> >> >>>> R1).
>> >> >>>>
>> >> >>>> Anant
>> >> >>>>
>> >> >>>> On Sat, Aug 9, 2008 at 5:12 AM, Anant Tamgole <
>> >> anant.tamgole@gmail.com
>> >> >>>> >wrote:
>> >> >>>>
>> >> >>>> > No.
>> >> >>>> > R1,2 and 3 are in area 0.
>> >> >>>> > On R1, the OIL NULL message comes when we we do debug ip mpacket
>> >> and
>> >> >>>> other
>> >> >>>> > drops count increases in sh ip mroute count.
>> >> >>>> >
>> >> >>>> > Anant
>> >> >>>> >
>> >> >>>> >
>> >> >>>> > On Fri, Aug 8, 2008 at 10:14 PM, Igor Manassypov <
>> >> >>>> imanassypov@rogers.com
>> >> >>>> > > wrote:
>> >> >>>> >
>> >> >>>> >> Are there any other routers involved in ospf? You might be
>> getting
>> >> >>>> some
>> >> >>>> >> route feedback which violates your rpf check
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >> *Anant Tamgole <anant.tamgole@gmail.com>* wrote:
>> >> >>>> >>
>> >> >>>> >> Hi,
>> >> >>>> >>
>> >> >>>> >> I have a scenario where
>> >> >>>> >> 1. R1 is hub and R2,R3 spokes.
>> >> >>>> >> 2. OSPF is running on main interfaces as NBMA mode.
>> >> >>>> >> 3. AutoRP is running on Hub R1.
>> >> >>>> >> 4. igmp join for 224.1.1.1 is on R3's ethernet.
>> >> >>>> >>
>> >> >>>> >> Problem: Not able to ping 224.1.1 from R1. If I give reapeat
>> count
>> >> >>>> 10,
>> >> >>>> >> first
>> >> >>>> >> ping succeeds but then it stops,
>> >> >>>> >> From R1 to R3 ping is ok.
>> >> >>>> >>
>> >> >>>> >> I tried with ip pim nbma mode on Hub and ip pim spt-threshold
>> >> >>>> infinity on
>> >> >>>> >> R3
>> >> >>>> >> , It does not help.
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >> Anant
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >> Blogs and organic groups at http://www.ccie.net
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>>
>> >> _______________________________________________________________________
>> >> >>>> >> Subscription information may be found at:
>> >> >>>> >> http://www.groupstudy.com/list/CCIELab.html
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >>
>> >> >>>> >> Igor M., M.Eng, P.Eng
>> >> >>>> >> Network Architect
>> >> >>>>
>> >> >>>>
>> >> >>>> Blogs and organic groups at http://www.ccie.net
>> >> >>>>
>> >> >>>>
>> >> _______________________________________________________________________
>> >> >>>> Subscription information may be found at:
>> >> >>>> http://www.groupstudy.com/list/CCIELab.html
>> >>
>> >>
>> >> Blogs and organic groups at http://www.ccie.net
>> >>
>> >> _______________________________________________________________________
>> >> Subscription information may be found at:
>> >> http://www.groupstudy.com/list/CCIELab.html
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
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