ECS4660-28F_Management Guide-R03

C HAPTER 43 | Multicast Filtering Commands
MLD (Layer 3)
– 1532 –
COMMAND MODE
Privileged Exec
COMMAND USAGE
To display information about multicast groups, MLD must first be enabled
on the interface to which a group has been assigned using the ipv6 mld
command, and multicast routing must be enabled globally on the system
using the ip multicast-routing command.
EXAMPLE
The following shows options for displaying MLD group information.
Console#show ipv6 mld groups
Group Address Interface VLAN Uptime Expire
--------------------------------------- --------------- -------- --------
FFEE::101 1 0:1:59 Never
Console#show ipv6 mld groups detail
Interface : VLAN 1
Group : FFEE::101
Uptime : 0h:2m:7s
Group Mode : Include
Last Reporter : FE80::0101
Group Source List:
Source Address Uptime Expire Fwd
--------------------------------------- ----------- ----------- ---
FFEE::0101 0h:0m:12s 0h:0m:0s Yes
Console#
II
Table 210: show ipv6 mld groups - display description
Field Description
Group Address IP multicast group address with subscribers directly attached or
downstream from the switch.
Interface VLAN The interface on the switch that has received traffic directed to the
multicast group address.
Uptime The time elapsed since this entry was created.
Expire The time remaining before this entry will be aged out. (The default
is 260 seconds.)
This field displays “stopped” if the Group Mode is INCLUDE.
Group Mode In Include mode, reception of packets sent to the specified
multicast address is requested only from those IP source
addresses listed in the source-list parameter. In Exclude mode,
reception of packets sent to the given multicast address is
requested from all IP source addresses except for those listed in
the source-list parameter, and where the source timer status has
expired. Note that Exclude mode does not apply to SSM
addresses.
Last Reporter The IP address of the source of the last membership report
received for this multicast group address on this interface.
Group Source List A list of zero or more IP unicast addresses from which multicast
reception is desired or not desired, depending on the filter mode.
Source Address The address of one of the multicast servers transmitting traffic to
the specified group.
Fwd Indicates whether or not traffic will be forwarded from the
multicast source.