Hello all,
I need help troubleshooting a multicast config, I am new to this network and I don't know much about multicast routing. I was told that multicast worked before VLANs were introduced. IP multicast is enabled on the core switch (cisco C9500-24Y4C). I'm hoping someone can help me troubleshoot if I provide config and show commands. The usage is for IP phones/intercom features and IP speakers. Here's the config and output of some relevant show commands that I found. If someone could help me solve this, I would greatly appreciate it. Thanks.
Sho run
!
ip multicast-routing
ip multicast rpf multitopology
!
interface Loopback0
ip address 10.0.16.1 255.255.255.255
ip pim sparse-dense-mode
!
interface Port-channel1
description **Link-TO-Main**
no switchport
ip address 10.1.0.5 255.255.255.252
ip pim sparse-dense-mode
!
interface Port-channel2
description **Link-TO-CMA**
no switchport
ip address 10.16.2.2 255.255.255.252
ip pim sparse-dense-mode
!
interface Vlan32
ip address 172.16.32.2 255.255.252.0
ip helper-address 172.16.32.10
ip helper-address 172.16.32.11
ip pim sparse-dense-mode
ipv6 address FD32::1/64
!
interface Vlan114
description IPT Phones
ip address 172.16.114.2 255.255.254.0
ip pim sparse-dense-mode
Show commands
CORE#sho 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, E - Extranet,
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,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 239.192.152.143), 1w6d/00:02:47, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan32, Forward/Sparse-Dense, 1w6d/stopped
Port-channel1, Forward/Sparse-Dense, 1w6d/stopped
(*, 239.255.255.254), 26w2d/00:02:39, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan32, Forward/Sparse-Dense, 13w3d/stopped
Port-channel1, Forward/Sparse-Dense, 26w2d/stopped
(*, 239.255.255.253), 26w2d/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Port-channel1, Forward/Sparse-Dense, 26w2d/stopped
Vlan32, Forward/Sparse-Dense, 26w2d/stopped
(172.16.34.110, 239.255.255.253), 00:01:41/00:01:18, flags: T
Incoming interface: Vlan32, RPF nbr 0.0.0.0
Outgoing interface list:
Port-channel1, Forward/Sparse-Dense, 00:01:41/stopped
(*, 239.255.255.250), 26w2d/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Port-channel1, Forward/Sparse-Dense, 26w2d/stopped
Vlan32, Forward/Sparse-Dense, 26w2d/stopped
(10.1.32.37, 239.255.255.250), 00:00:00/00:02:58, flags:
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan32, Forward/Sparse-Dense, 00:00:00/stopped
Port-channel1, Forward/Sparse-Dense, 00:00:00/stopped
(10.1.32.47, 239.255.255.250), 00:01:03/00:01:56, flags:
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan32, Forward/Sparse-Dense, 00:01:03/stopped
CORE#show ip pim interface
Address Interface Ver/ Nbr Query DR DR
Mode Count Intvl Prior
172.16.114.2 Vlan114 v2/SD 0 30 1 172.16.114.2
10.0.16.1 Loopback0 v2/SD 0 30 1 10.0.16.1
10.1.0.5 Port-channel1 v2/SD 1 30 1 10.1.0.6
10.16.2.2 Port-channel2 v2/SD 0 30 1 10.16.2.2
172.16.32.2 Vlan32 v2/SD 0 30 1 172.16.32.2
CORE#sho ip igmp interface
Vlan114 is up, line protocol is up
Internet address is 172.16.114.2/23
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 7257 joins, 7254 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 172.16.114.2 (this system)
IGMP querying router is 172.16.114.2 (this system)
Multicast groups joined by this system (number of users):
224.0.1.40(2)
Loopback0 is up, line protocol is up
Internet address is 10.0.16.1/32
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 0 joins, 0 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 10.0.16.1 (this system)
IGMP querying router is 10.0.16.1 (this system)
No multicast groups joined by this system
Port-channel1 is up, line protocol is up
Internet address is 10.1.0.5/30
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 0 joins, 0 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 10.1.0.6
IGMP querying router is 10.1.0.5 (this system)
No multicast groups joined by this system
Port-channel2 is up, line protocol is up
Internet address is 10.16.2.2/30
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 0 joins, 0 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 10.16.2.2 (this system)
IGMP querying router is 10.16.2.2 (this system)
No multicast groups joined by this system
Vlan32 is up, line protocol is up
Internet address is 172.16.32.2/22
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 14975 joins, 14967 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 172.16.32.2 (this system)
IGMP querying router is 172.16.32.2 (this system)
No multicast groups joined by this system
show ip igmp snooping groups
Vlan Group Type Version Port List
-----------------------------------------------------------------------
15 224.0.1.60 igmp v2 Twe1/0/4
15 239.255.255.250 igmp v2 Twe1/0/4
15 239.255.255.253 igmp v2 Twe1/0/4
32 224.0.1.60 igmp v2 Twe2/0/4
32 224.0.5.128 igmp v2 Twe2/0/4
32 224.0.23.175 igmp v2 Po5
32 225.1.2.3 igmp v2 Po5
32 239.192.152.143 igmp v2 Twe2/0/4
32 239.255.255.250 igmp v2 Twe1/0/4, Twe2/0/4, Po3,
Po5
32 239.255.255.253 igmp v2 Twe1/0/4, Twe2/0/4
32 239.255.255.254 igmp v2 Po5
42 224.0.1.60 igmp v2 Po3
42 239.255.102.18 igmp v2 Po3
42 239.255.255.250 igmp v2 Po3
52 224.0.1.60 igmp v2 Twe1/0/4
52 233.89.188.1 igmp v2 Twe1/0/4, Twe2/0/4
52 239.254.127.63 igmp v2 Twe1/0/4, Twe2/0/4
52 239.255.102.18 igmp v2 Twe1/0/4, Twe2/0/4
52 239.255.255.248 igmp v2 Twe1/0/4
52 239.255.255.250 igmp v2 Twe1/0/4, Twe2/0/4
52 239.255.255.253 igmp v2 Twe2/0/4
64 239.255.255.250 igmp v2 Twe1/0/4
112 224.0.23.59 igmp v2 Twe2/0/4, Po5
112 226.3.15.13 igmp v2 Po5
114 224.0.23.175 igmp v2 Twe1/0/4
114 224.168.168.168 igmp v2 Twe1/0/4, Twe2/0/4
142 239.255.255.250 igmp v2 Twe1/0/4, Po3
200 239.255.255.250 igmp v2 Twe1/0/2
