From: Brian Edwards (bedwards@xxxxxxxxxxx)
Date: Wed Aug 02 2000 - 21:21:05 GMT-3
It is working correctly. You will get a single response from each router
that has the "join-group" statement. The response will use the outgoing
interface as the source address.
The significance of configuring "join-group" on a particular interface is
that it will respond to IGMP group membership queries from other routers on
that network (not sure why this is necessary b/c it will also send PIM
Join/Prune messages). Maybe this is important if the router with
"join-group" is not the PIM DR for the network.
/Brian
-----Original Message-----
From: Earl Aboytes [mailto:earl@linkline.com]
Sent: Wednesday, August 02, 2000 4:38 PM
To: ccielab@groupstudy.com
Subject: multicast sparse mode
I've got three routers connected via frame with one hub and two spokes.
They are all running PIM Sparse mode on the cloud and the lan interfaces.
When I ping from a spoke I get a reply from the other two serial nterfaces
but not from the lan interfaces where I have placed the join statement. My
RP is at one of the spokes. Is this what I should be seeing?
Any ideas?
HUB RTRA
interface Ethernet0
ip address 138.7.30.3 255.255.255.0
no ip directed-broadcast
ip pim sparse-dense-mode
ip igmp join-group 224.1.2.3
ip igmp join-group 225.1.2.3
ipx network 30
bridge-group 1
!
interface Serial0
ip address 138.7.100.3 255.255.255.248
no ip directed-broadcast
ip pim nbma-mode
ip pim sparse-dense-mode
encapsulation frame-relay
ip ospf network broadcast
no ip mroute-cache
frame-relay map ip 138.7.100.2 502 broadcast
frame-relay map ip 138.7.100.4 508 broadcast
frame-relay lmi-type cisco
RTRB SPOKE
interface Ethernet0
ip address 150.100.2.1 255.255.255.0
ip pim sparse-mode
ip igmp join-group 224.1.2.3
ipx network 2468 encapsulation SNAP
!
interface Serial0
ip address 138.7.100.4 255.255.255.248
ip pim sparse-mode
encapsulation frame-relay
ip ospf network broadcast
frame-relay map ip 138.7.100.2 805 broadcast
frame-relay map ip 138.7.100.3 805 broadcast
RTRC SPOKE
!
interface Serial0/0
ip address 138.7.100.2 255.255.255.248
no ip directed-broadcast
ip pim sparse-mode
encapsulation frame-relay
ip ospf network broadcast
frame-relay map ip 138.7.100.3 205 broadcast
frame-relay map ip 138.7.100.4 205 broadcast
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Earl Aboytes
Senior Technical Conultant
GTE Managed Solutions
805-381-8817
earl.aboytes@telops.gte.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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