From: louis john (west_coast@inbox.com)
Date: Mon Jun 25 2007 - 02:45:29 ART
Hi Group,
I spent three hours trying to understand how IGMP PROFILE works without any result, here is my scenarion :
R2-E0----L3---F1/0/2---SW2---F1/0/4---L2--F0/0--R4
R2 is the mapping agent and the RP for the groups 229.1.1.0/29
Loopback 0 of R4 is joining the following groups:
229.1.1.1
229.1.1.2
229.1.1.3
229.1.1.4
229.1.1.5
229.1.1.6
229.1.1.7
Scope :
I want to permit only 229.1.1.1, 229.1.1.2, 229.1.1.3 to be Joined by the Loopback 0 of R4. Though I configured THE IGMP PROFILE and applied the IGMP filter under F1/0/4, still I can see all (*,G) flowing from R4 towards the RP which is R2. from R2 I can ping all the groups!
I understood filtering of IGMP such that if any IGMP Membership report sent to SW2 F1/0/4 then SW2 should filter this IGMP joining because of the IGMP filter is applied under this interface.
Also I was expecting not to see other than the first three groups on SW2 and R2.
Here are my configuration :
R2
ip multicast-routing
interface Loopback0
ip address 150.1.2.2 255.255.255.0
ip pim sparse-mode
!
!
interface Ethernet1
Description Connected to SW2 F1/0/2
ip address 130.1.28.2 255.255.255.0
ip pim sparse-mode
!
ip pim bsr-candidate Loopback0 0
ip pim rp-candidate Loopback0 group-list R2-GROUPS priority 50
ip access-list standard R2-GROUPS
permit 229.1.1.0 0.0.0.7
!
R4
ip multicast-routing
interface FastEthernet0/0
ip address 130.1.48.4 255.255.255.0
ip pim sparse-mode
speed auto
!
interface Loopback0
ip address 150.1.4.4 255.255.255.0
ip pim sparse-mode
ip igmp join-group 229.1.1.1
ip igmp join-group 229.1.1.2
ip igmp join-group 229.1.1.3
ip igmp join-group 229.1.1.4
ip igmp join-group 229.1.1.5
ip igmp join-group 229.1.1.6
ip igmp join-group 229.1.1.7
SW2
ip multicast-routing
interface FastEthernet1/0/2
description Connected to R2 E1
no switchport
ip address 130.1.28.8 255.255.255.0
ip pim sparse-mode
!
ip igmp profile 10
permit
range 229.1.1.1 229.1.1.3
!
interface FastEthernet1/0/4
switchport access vlan 48
ip igmp filter 10
!
interface Vlan48
ip address 130.1.48.8 255.255.255.0
ip pim sparse-mode
On SW2
SW2#show ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 229.1.1.1), 00:01:04/00:03:25, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:04/00:03:25
(*, 229.1.1.3), 00:01:06/00:03:22, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:06/00:03:22
(*, 229.1.1.2), 00:01:10/00:03:19, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:10/00:03:19
(*, 229.1.1.5), 00:01:04/00:03:24, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:04/00:03:24
(*, 229.1.1.4), 00:00:59/00:03:29, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:00/00:03:29
(*, 229.1.1.7), 00:01:02/00:03:26, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:02/00:03:26
(*, 229.1.1.6), 00:01:05/00:03:23, RP 150.1.2.2, flags: S
Incoming interface: FastEthernet1/0/2, RPF nbr 130.1.28.2
Outgoing interface list:
Vlan48, Forward/Sparse, 00:01:05/00:03:23
(*, 224.0.1.40), 00:01:47/00:02:37, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
FastEthernet1/0/2, Forward/Sparse, 00:01:47/00:02:37
ON R1
SW2#SHOW IP igmp profile
IGMP Profile 10
permit
range 229.1.1.1 229.1.1.3
SW2#SHOW IP igmp filter
IGMP filter enabled
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