Multicast issue: Auto-RP over Sparse-Dense mode

From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Thu Sep 15 2005 - 17:14:27 GMT-3


Here is the situation.... I am doing multicast with Auto-RP over
Sparse-Dense (configs below). R2 has a DLCI to R3 and R4 (multipoint
subif), and, also a point-to-point subinterface on a separate dlci to
R5.

R2 is announcing itself as the RP for groups 224.2.2.0
R4 is announcing itself as the RP for groups 224.4.4.0

I believe the configurations are correct. However, when I do the show
ip pim rp map, I get the following:

R2#sh ip pim rp map
PIM Group-to-RP Mappings
This system is an RP (Auto-RP)
This system is an RP-mapping agent (Serial0.2)

Group(s) 224.2.2.0/24
  RP 20.20.20.1 (?), v2v1
    Info source: 20.20.20.1 (?), via Auto-RP
         Uptime: 23:19:40, expires: 00:02:15

R3#sh ip pim rp map
PIM Group-to-RP Mappings

Group(s) 224.2.2.0/24
  RP 20.20.20.1 (?), v2v1
    Info source: 172.16.1.2 (?), via Auto-RP
         Uptime: 23:18:23, expires: 00:02:39
R3#

R4# sh ip pim rp map
PIM Group-to-RP Mappings
This system is an RP (Auto-RP)

Group(s) 224.2.2.0/24
  RP 20.20.20.1 (?), v2v1
    Info source: 172.16.1.2 (?), via Auto-RP
         Uptime: 00:00:05, expires: 00:02:50
Group(s) 224.4.4.0/24
  RP 40.40.40.1 (?), v2v1
    Info source: 40.40.40.1 (?), via Auto-RP
         Uptime: 23:06:44, expires: 00:01:17

R5#sh ip pim rp map
PIM Group-to-RP Mappings

Group(s) 224.2.2.0/24
  RP 20.20.20.1 (?), v2v1
    Info source: 172.16.1.2 (?), via Auto-RP
         Uptime: 23:05:19, expires: 00:02:50

Problem: for some reason, I cannot get the 224.4.40 group to be mapped
throughout the network. I run the same scenario under BSR and it works
fine. Also, running the MRM utility shows no errors. Thoughts? Here
are the configs......

hostname R2
ip multicast-routing
!
interface Loopback0
 ip address 20.20.20.1 255.255.255.0
 ip pim sparse-dense-mode
!
interface Serial0
 no ip address
 encapsulation frame-relay
 no frame-relay inverse-arp
 frame-relay lmi-type cisco
!
interface Serial0.1 multipoint
 ip address 192.168.1.2 255.255.255.0
 ip pim nbma-mode
 ip pim sparse-mode
 frame-relay map ip 192.168.1.2 203
 frame-relay map ip 192.168.1.3 203 broadcast
 frame-relay map ip 192.168.1.4 204 broadcast
 no frame-relay inverse-arp
!
interface Serial0.2 point-to-point
 ip address 172.16.1.2 255.255.255.0
 ip pim sparse-dense-mode
 ip igmp join-group 224.4.4.4
 frame-relay interface-dlci 205
!
router eigrp 1
 network 172.16.0.0
 network 192.168.1.0
 no auto-summary
 no eigrp log-neighbor-changes
!
ip pim send-rp-announce Loopback0 scope 16 group-list 1
ip pim send-rp-discovery Serial0.2 scope 16
!
ip mrm manager TST
 manager Loopback0 group 224.4.4.4
 senders 8
 receivers 9 sender-list 8
!
access-list 1 permit 224.2.2.0 0.0.0.255
access-list 8 permit 50.50.50.1
access-list 9 permit 40.40.40.1
!

R3
hostname R3
ip multicast-routing
!
interface Loopback0
 ip address 30.30.30.1 255.255.255.0
 ip pim sparse-dense-mode
!
interface Serial0
 ip address 192.168.1.3 255.255.255.0
 ip pim sparse-dense-mode
 encapsulation frame-relay
 frame-relay map ip 192.168.1.2 302 broadcast
 frame-relay map ip 192.168.1.3 302
 frame-relay map ip 192.168.1.4 302 broadcast
 no frame-relay inverse-arp
 frame-relay lmi-type cisco
!
router eigrp 1
 network 192.168.1.0
 no auto-summary
 no eigrp log-neighbor-changes
!

R4

hostname R4
ip multicast-routing
!
interface Loopback0
 ip address 40.40.40.1 255.255.255.0
 ip pim sparse-dense-mode
 ip mrm test-receiver
!
interface Serial0
 ip address 192.168.1.4 255.255.255.0
 ip pim sparse-dense-mode
 encapsulation frame-relay
 frame-relay map ip 192.168.1.2 402 broadcast
 frame-relay map ip 192.168.1.3 402 broadcast
 frame-relay map ip 192.168.1.4 402
 no frame-relay inverse-arp
 frame-relay lmi-type cisco
!
router eigrp 1
 network 192.168.1.0
 no auto-summary
 no eigrp log-neighbor-changes
!
ip pim send-rp-announce Loopback0 scope 16 group-list 1
!
access-list 1 permit 224.4.4.0 0.0.0.255
!

R5
hostname R5
ip multicast-routing
!
interface Loopback0
 ip address 50.50.50.1 255.255.255.0
 ip pim sparse-dense-mode
 ip mrm test-sender
!
interface Serial0
 ip address 172.16.1.5 255.255.255.0
 ip pim sparse-dense-mode
 encapsulation frame-relay
 frame-relay interface-dlci 502
 frame-relay lmi-type cisco
!
router eigrp 1
 network 172.16.0.0
 no auto-summary
 no eigrp log-neighbor-changes
!
end

Dave Schulz
Email: dschulz@dpsciences.com <mailto:dschulz@dpsciences.com >



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