
DISPLAYING IP MULTICAST ROUTING SETTINGS
CONFIGURATION FOR IR1
The following is the configuration for the router labeled IR1:
config vlan HQ_10_0_1 ipaddress 10.0.1.2 255.255.255.0 config vlan HQ_10_0_2 ipaddress 10.0.2.2 255.255.255.0 config ospf add vlan all
enable ipforwarding enable ospf
enable ipmcforwarding config dvmrp add vlan all enable dvmrp
DISPLAYING IP MULTICAST ROUTING SETTINGS
To display settings for IP multicast routing components, use the commands listed in Table
Table 11-3: IP Multicast Routing Show Commands
Command | Description |
|
|
show dvmrp {vlan <name> route all} | Displays the DVMRP configuration and |
| statistics, or the unicast route table. The |
| default setting is all. |
show igmp snooping {<vlan <name> all} | Displays IGMP snooping registration |
| information, and a summary of all IGMP |
| timers and states. |
show ipmc cache {<group> {<src_ipaddress> <mask>}} all}
Displays the IP multicast forwarding cache. Information displayed includes the following:
■IP group address
■IP source address and mask
■Upstream neighbor
■Interface to upstream neighbor
■Route expiration timer
■Routing protocol
■List of next hop interfaces and protocols
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