From: Devender Singh (devender.singh@xxxxxxxxxxxxxx)
Date: Wed May 23 2001 - 10:19:36 GMT-3
Very interesting finding. I seem to think that this could have some think to
have Ospf hellos being multicast as well( not sure).
Devender Singh
BE(Hons), CCNP
IP Solution Specialist
-----Original Message-----
From: Tim [mailto:tschlos1@ix.netcom.com]
Sent: Wednesday, 23 May 2001 9:03
To: ccielab@groupstudy.com
Subject: PIM sparse mode configuration w/IRB and ISL trunks
I am attempting to configure multicast routing on a 2600 running version
12.09. The router has a fast ethernet interface configured with multiple
VLAN's via ISL trunking. I am also running IRB (bridge group 45) on two
subinterfaces fa0/0.4 and fa0/0.5. My OSPF adjacensies are woring properly
as
well as the BVI interface prior to enable multicast routing. After I enable
the multicast routing on the subinterface and turn on cgmp, my OSPF neighbor
adjacensies attached to the fa0/0.4 and fa0/0.5 subinterfaces disappear. I
ran several debugs (debug ip ospf adj and debug ip ospf events) but could
find
nothing wrong. As soon as I take off the command ip pim sparse-mode and the
ip cgmp, the ospf adjacensies are formed.
Also, if I put the pim commands back into the router, the OSPF adjacensies
remain active. However, when I reload the router, the neighbor adjacencies
no longer form.
Any thoughts on what I may be doing wrong or if this could be a bug with the
IOS. I realize that I doing quite a few things with these interfaces, but
you
never know what they may ask you in the lab.
Following is the config I was working with for the 2600 router:
!
memory-size iomem 10
ip subnet-zero
no ip domain-lookup
!
ip multicast-routing
ip dvmrp route-limit 20000
ipx routing 0007.0007.0007
bridge irb
!
dlsw local-peer peer-id 150.2.1.7
dlsw remote-peer 0 tcp 150.2.1.5
dlsw bridge-group 1
!
!
voice-port 1/0/0
!
voice-port 1/0/1
!
!
interface Loopback0
ip address 150.2.1.7 255.255.255.255
no ip directed-broadcast
!
interface FastEthernet0/0
no ip address
no ip directed-broadcast
full-duplex
!
interface FastEthernet0/0.1
encapsulation isl 1
ip address 192.168.0.3 255.255.255.0
no ip redirects
no ip directed-broadcast
ip pim sparse-mode
ip cgmp
bridge-group 45
!
interface FastEthernet0/0.2
encapsulation isl 2
ip address 150.1.2.7 255.255.255.128
no ip redirects
no ip directed-broadcast
ip pim sparse-mode
ip cgmp
ipx encapsulation NOVELL-ETHER
ipx network 272
!
interface FastEthernet0/0.3
encapsulation isl 3
ip address 150.1.3.7 255.255.255.128
no ip redirects
no ip directed-broadcast
ip pim sparse-mode
ip cgmp
!
interface FastEthernet0/0.4
encapsulation isl 4
ip address 150.1.4.7 255.255.255.192
no ip redirects
no ip directed-broadcast
ip pim sparse-mode
ip ospf cost 5
ip cgmp
no ip mroute-cache
bridge-group 45
!
interface FastEthernet0/0.5
encapsulation isl 5
ip address 150.1.5.7 255.255.255.0
no ip redirects
no ip directed-broadcast
ip pim dense-mode
ip cgmp
bridge-group 45
!
interface Serial0/0
no ip address
no ip directed-broadcast
no ip mroute-cache
shutdown
no fair-queue
!
interface Serial0/1
no ip address
no ip directed-broadcast
shutdown
!
interface BVI45
no ip address
no ip directed-broadcast
ipx network 45
!
router ospf 1
network 150.1.2.0 0.0.0.127 area 0
network 150.1.3.0 0.0.0.127 area 0
network 150.1.4.0 0.0.0.63 area 2
network 150.1.5.0 0.0.0.255 area 2
network 150.2.1.7 0.0.0.0 area 0
network 192.168.0.0 0.0.0.255 area 4
log-adjacency-changes
!
ip classless
no ip http server
ip pim send-rp-announce FastEthernet0/0.4 scope 16
ip pim send-rp-announce FastEthernet0/0.5 scope 16
!
!
!
!
!
bridge 1 protocol ieee
bridge 45 protocol ieee
bridge 45 route ipx
!
Thanks for an assistance,
Tim Schlosser
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