Cisco Cisco SG500-52PP 52-port Gigabit Max PoE+ Stackable Managed Switch 技术参考

IPv4 IPM Router Commands

OL-31486-02 Command Line Interface Reference Guide

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switchxxxxxx(config-if)# 

exit

To display the contents of the Multicast routing (mroute) table, use the show ip 
mroute command in user EXEC or privileged EXEC mode.

show ip mroute [

group-address

 [

source-address

]] [summary]

•

group-address

—Destination Multicast IP address.

•

source-address

—Source IP address.

•

summary—Filters the output to display a one-line, abbreviated summary of 
each entry in the mroute table.

User EXEC mode

Privileged EXEC mode

Use the show ip mroute command to display information about Mroute entries in 
the mroute table. The switch populates the Multicast routing table by creating (S, 
G) entries from (*, G) entries. The asterisk (*) refers to all source addresses, the “S” 
refers to a single source address, and the “G” is the destination Multicast group 
address. In creating (S, G) entries, the switch uses the best path to that destination 
group found in the Unicast routing table (that is, through Reverse Path Forwarding 
[RPF]).

Description of Significant fields in the examples below

Timers:Uptime/Expires—“Uptime” indicates per interface how long (in hours, 
minutes, and seconds) the entry has been in the IP Multicast routing table. 
“Expires” indicates per interface how long (in hours, minutes, and seconds) until 
the entry will be removed from the IP Multicast routing table.