To display the contents of the Multicast routing (mroute) table, use the show ipv6 mroute command in user EXEC or privileged EXEC mode.
Syntax
show ipv6 mroute [group-address [source-address]] [summary]
Parameters
-
group-address—Destination Multicast IPv6 address.
-
source-address—Source IPv6 address.
-
summary—Filters the output to display a one-line, abbreviated summary of each entry in the mroute table.
Command Mode
User EXEC mode
Privileged EXEC mode
User Guidelines
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]).
Examples
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 IPv6 Multicast routing
table. “Expires” indicates per interface how long (in hours, minutes, and seconds) until the entry will be removed from the
IPv6 Multicast routing table.
(*, FF07::1) and (FF07::1/128, FF07::1)—Entry in the IPv6 Multicast routing table. The entry consists of the IP address of the source router followed by the IP address
of the Multicast group. An asterisk (*) in place of the source router indicates all sources.
Entries in the first format are referred to as (*, G) or “star comma G” entries. Entries in the second format are referred
to as (S, G) or “S comma G” entries. (*, G) entries are used to build (S, G) entries.
Incoming interface: —Expected interface for a Multicast packet from the source. If the packet is not received on this interface, it is discarded.
Outgoing Interface List (OIF):—Interfaces through which packets will be forwarded.
Examples
Example 1. The following is sample output from the show ipv6 mroute command with the summary keyword:
switchxxxxxx# show ip mroute summary
Timers: Uptime/Expires
IPv6 Multicast Routing Table
(2001:0DB8:999::99, FF07::5), 00:04:55/00:02:36, OIF count:1
(2001:0DB8:999::99, FF07::1), 00:02:46/00:00:12, OIF count:1
Example 2. The following is sample output from the show ipv6 mroute command:
switchxxxxxx# show ip mroute
Timers: Uptime/Expires
IPv6 Multicast Routing Table
(*, FF07::1), 00:04:45/00:02:47, RP 2001:0DB8:6::6
Incoming interface: vlan5
Outgoing interface list:
vlan40, 00:04:45/00:02:47
(2001:0DB8:999::99, FF07::1), 00:02:06/00:01:23
Incoming interface: vlan5
Outgoing interface list:
vlan40, 00:02:06/00:03:27
Feedback