From: Gupta, Gopal (NWCC) (gopal.gupta@hp.com)
Date: Fri Jan 11 2008 - 10:43:59 ARST
Hi experts,
I am banging my head since 3 hours on this simple but complex issue ,
please help !!!!!
I am running multicast on 2 switches Sw1 and SW4 with int vlan 51 on
both switches. Both switches are connected through etherchannel. SW1 is
the RP as well as MA.
Sw4 is recieving packets for 224.0.1.40 but not learning rp mappings
that SW1 is sending.
all other devices connected to SW1 area learning these mappings.
SW1--3550 (Loopback 2.2.7.7)
---------------
ip pim send-rp-announce Loopback0 scope 15 group-list 13 interval 15
ip pim send-rp-discovery Loopback0 scope 15
interface Vlan51
ip address 2.2.51.1 255.255.255.0
ip pim sparse-dense-mode
SW1#00:36:39: Auto-RP: Build RP-Discovery packet
00:36:39: Auto-RP: Build mapping (224.1.1.0/24, RP:2.2.7.7), PIMv2 v1,
00:36:39: Auto-RP: Send RP-discovery packet on Vlan51 (1 RP
entries)<------------ it is sending discovery to SW4
00:36:39: Auto-RP: Send RP-discovery packet on FastEthernet0/1 (1 RP
entries)
SW4--3560
----------------
ip multicast-routing distributed
interface Vlan51
ip address 2.2.51.4 255.255.255.0
ip pim sparse-dense-mode
end
SW4
-------
sh ip pim nei
PIM Neighbor Table
Neighbor Interface Uptime/Expires Ver DR
Address
Prio/Mode
2.2.51.1 Vlan51 00:00:34/00:01:39 v2 N /
SW4#sh ip pim rp ma
PIM Group-to-RP Mappings
SW4#sh ip mr
(*, 224.0.1.39), 00:00:43/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan51, Forward/Sparse-Dense, 00:00:43/00:00:00
(2.2.7.7, 224.0.1.39), 00:00:33/00:02:27, flags: PTX
Incoming interface: Vlan51, RPF nbr 2.2.51.1
Outgoing interface list: Null
(*, 224.0.1.40), 00:00:54/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan51, Forward/Sparse-Dense, 00:00:54/00:00:00
(2.2.7.7, 224.0.1.40), 00:00:27/00:02:33, flags: PLTX
Incoming interface: Vlan51, RPF nbr 2.2.51.1
Outgoing interface list: Null
SW4#sh ip mr co
Group: 224.0.1.39, Source count: 1, Packets forwarded: 0, Packets
received: 8
Source: 2.2.7.7/32, Forwarding: 0/0/0/0, Other: 8/0/8
Group: 224.0.1.40, Source count: 1, Packets forwarded: 0, Packets
received: 2
Source: 2.2.7.7/32, Forwarding: 0/0/0/0, Other: 2/0/2
Thanks,
Gops
This archive was generated by hypermail 2.1.4 : Fri Feb 01 2008 - 10:37:59 ARST