To display general information about the IP multicast configuration on the router, use the following show commands.
show ip mroute
host1#show ip mroute IP Multicast Routing Table
(S, G) uptime d h:m:s
[Data rate: Kbps] [SPT Threshold: Kbps] [Threshold: Kbps]
[Admission bandwidth: bps]
[QoS bandwidth: bps]
RPF route: addr/mask, incoming interface
neighbor address, owner route-owner
Incoming interface list:
Interface (addr/mask), State/Owner [(RPF IIF)]
Outgoing interface list:
Interface (addr/mask), State/Owner, Uptime/Expires
(10.0.10.1, 225.1.1.1) uptime 0 00:10:31
Data rate: 2132 Kbps, Threshold 500 Kbps
Admission bandwidth: 2000000 bps
RPF route: 10.0.10.0/24, incoming interface atm5/3.1010
neighbor 10.0.10.8, owner Local
Incoming interface list:
atm5/3.1010 (10.0.10.8/24), Accept/Pim (RPF IIF)
Outgoing interface list:
atm5/1.108 (108.0.8.5/8), Forward/Pim, 0 00:02:52/never
atm5/1.109 (107.0.8.4/8), Forward/Pim, 0 00:10:07/never
(1.1.1.1, 225.1.1.1) uptime 0 00:00:34, never expires
RPF route: 1.0.0.0/8, incoming interface ATM5/1.200
neighbor 2.2.2.2, owner Netmgmt
Incoming interface list:
ATM5/1.200 (2.1.1.1/8), Accept/Igmp (RPF IIF)
Outgoing interface list:
ATM5/1.300 (3.1.1.1/8), Forward/Igmp, 0 00:00:34/never
Counts: 2 (S, G) entries
0 (*, G) entries
![]() |
Note: The (S,G) entry (1.1.1.1, 225.1.1.1) is the permanent mroute. |
Host1#show ip mroute
IP Multicast Routing Table
(S, G) uptime d h:m:s[, expires d h:m:s]
[Admission bandwidth: bps]
[QoS bandwidth: bps]
RPF route: addr/mask, incoming interface
neighbor address, owner route-owner
Incoming interface list:
Interface (addr/mask), State/Owner [(RPF IIF)]
Outgoing interface list:
Interface (addr/mask), State/Owner, Uptime/Expires
(10.0.1.9, 225.1.1.1) uptime 0 00:00:23
Admission bandwidth: 1998000 bps (adaptive)
QoS bandwidth: 1998000 bps (adaptive)
RPF route: 10.0.0.0/8, incoming interface ATM2/1.200
neighbor 21.1.1.1, owner Netmgmt
Incoming interface list:
ATM2/1.200 (21.2.2.2/8), Accept/Pim (RPF IIF)
Outgoing interface list:
ATM2/1.300 (31.2.2.2/8), Blocked (port-adm-limit)/Pim, 0 00:00:23/never
Counts: 1 (S, G) entries
0 (*, G) entries
show ip mroute active
host1#show ip mroute active 10000
Active IP Multicast Routes >=10000 bps
(S, G) uptime d h:m:s[, expires d h:m:s]
[Admission bandwidth: bps]
[QoS bandwidth: bps]
RPF route: addr/mask, incoming interface
neighbor address, owner route-owner
Incoming interface list:
Interface (addr/mask), State/Owner [(RPF IIF)]
Outgoing interface list:
Interface (addr/mask), State/Owner, Uptime/Expires
(52.0.0.1, 232.0.0.1) uptime 0 00:01:07
Admission bandwidth: 47000 bps (adaptive)
QoS bandwidth: 47000 bps (adaptive)
RPF route: 52.0.0.0/24, incoming interface ATM2/1.17
neighbor 17.0.0.2, owner NetmgmtRpf
Incoming interface list:
ATM2/1.17 (17.0.0.2/24), Accept/Igmp (RPF IIF)
Outgoing interface list:
NULL
Counts: 1 (S, G) entries
0 (*, G) entries
host1#show ip mroute summary active
Active IP Multicast Routes >=4000 bps
Group Address Source Address RPF route RPF Iif #Oifs
--------------- --------------- ------------------ --------------- -----
232.0.0.1 51.0.0.1 51.0.0.0/24 ATM3/1.17 0
232.0.0.2 51.0.0.1 51.0.0.0/24 ATM3/1.17 0
232.0.0.3 51.0.0.1 51.0.0.0/24 ATM3/1.17 0
Counts: 3 (S, G) entries
0 (*, G) entries
show ip mroute count
host1#show ip mroute count
IP Multicast Routing Table
Counts: 2 (S, G) entries
0 (*, G) entries
show ip mroute statistics
![]() |
Note: The display shows statistics after the VR has added the multicast route to the multicast routing table and established the route on the appropriate line module. Statistics for interactions that take place before the route is established on the line module are not displayed. |
host1#show ip mroute statistics IP Multicast Routing Table
(S, G) uptime d h:m:s[, expires d h:m:s]
[Admission bandwidth: bps]
[QoS bandwidth: bps]
RPF route: addr/mask, incoming interface
neighbor address, owner route-owner
Incoming interface list:
Interface (addr/mask), State/Owner [(RPF IIF)]
Outgoing interface list:
Interface (addr/mask), State/Owner, Uptime/Expires
(10.0.1.9, 225.1.1.1) uptime 0 00:00:23
Admission bandwidth: 2000000 bps
QoS bandwidth: 2000000 bps
RPF route: 10.0.0.0/8, incoming interface ATM2/1.200
neighbor 21.1.1.1, owner Netmgmt
Incoming interface list:
ATM2/1.200 (21.2.2.2/8), Accept/Pim (RPF IIF)
Outgoing interface list:
ATM2/1.300 (31.2.2.2/8), Blocked (port-adm-limit)/Pim, 0 00:00:23/never
Statistics:
Received : 23 pkts, 1472 bytes
Forwarded : 0 pkts, 0 bytes
Rcvd on OIF: 0 pkts
Counts: 1 (S, G) entries
0 (*, G) entries
show ip mroute summary
host1#show ip mroute summary
IP Multicast Routing Table
Group Address Source Address RPF route RPF Iif #Oifs --------------- --------------- --------- ------------- ---- 224.0.1.39 52.1.1.1 51.1.1.1/32 Register IIF 0 224.0.1.40 51.1.1.1 51.1.1.1/32 loopback1 1
Counts: 2 (S, G) entries
0 (*, G) entries
show ip multicast protocols
host1#show ip multicast protocols Multicast protocols:
Protocol Pim
Type: Sparse
Interfaces: 1 registered, 1 owned
Registered interfaces:
ATM2/1.103 (103.0.0.2/24) owner Pim
Protocol Igmp
Type: Local
Interfaces: 1000 registered, 1000 owned
Registered interfaces:
ATM2/0.131 (13.0.0.1/24) local Igmp owner Igmp
Admission-bandwidth 2000000/10000000 bps
QoS Adjust 2000000 bps
Active <S,G> count 15
Blocked <S,G> count 10
ATM2/0.132 (13.0.0.2/24) local Igmp owner Igmp
Admission-bandwidth 0/10000000 bps
QoS Adjust 0 bps
Active <S,G> count 25
Blocked <S,G> count 10
ATM2/0.133 (13.0.0.3/24) local Igmp owner Igmp
Admission-bandwidth 8000000/10000000 bps
QoS Adjust 0 bps
...
Count: 2 protocols
show ip multicast protocols brief
host1#show ip multicast protocols brief
Protocol Registered Owned Type Interfaces Interfaces --------- ---------- ---------- ------------------- Pim 2 2 Sparse Dense Igmp 1 0 Local
Count: 2 protocols
show ip multicast routing
host1#show ip multicast routing Multicast forwarding is enabled on this router Multicast graceful restart is complete (timer 0 seconds) on this router Multicast cache-miss processing is enabled on this router
show mroute port count
![]() |
Note: This command displays information for mroutes on a port across all virtual routers. |
host1#show mroute port count
BW Priority Port Limit Count bps BW bps Hysteresis Admitted ----- ----- ----- ----- -------- ---------- -------- 1/1/0 None 1 None None 85 0 1/1/1 None 2 15000 10000 85 2000
When you enable multicast routing on a virtual router, the router acts as a multicast router information (mrinfo) server. This feature enables the router to respond to mrinfo requests from other network hosts. Specifically, E-series virtual routers respond to DVMRP ask neighbors and DVMRP ask neighbors2 requests.
Each virtual router responds to mrinfo requests with a list of multicast interfaces and their IP addresses. If appropriate, the virtual router also supplies the following information for each interface:
If PIM is configured on the interface, the virtual router supplies a list of the interface's PIM neighbors and indicates which neighbors are leaf neighbors.
If the interface is an endpoint of a tunnel, the virtual router specifies the IP address of the endpoint of the tunnel.