68
2.
Set the maximum number of
multicast VLAN forwarding
entries.
multicast-vlan entry-limit limit
By default, the maximum number
of multicast VLAN forwarding
entries is 4000.
Displaying and maintaining multicast VLANs
Execute
display
commands in any view and
reset
commands in user view.
Task
Command
Display information about multicast
VLANs.
display multicast-vlan
[
vlan-id
]
Display information about multicast
groups in multicast VLANs.
display multicast-vlan
group
[
source-address
|
group-address
|
slot
slot-number
|
verbose
|
vlan
vlan-id
] *
Display information about multicast
VLAN forwarding entries.
display multicast-vlan forwarding-table
[
group-address
[
mask
{
mask-length
|
mask
} ]
|
source-address
[
mask
{
mask-length
|
mask
} ] |
slot
slot-number
|
subvlan
vlan-id
|
vlan
vlan-id
] *
Clear multicast groups in multicast
VLANs.
reset
multicast-vlan
group
[
source-address
[
mask
{
mask-length
|
mask
} ] |
group-address
[
mask
{
mask-length
|
mask
} ]
|
vlan
vlan-id
] *
Multicast VLAN configuration examples
Sub-VLAN-based multicast VLAN configuration example
Network requirements
As shown in
•
Layer 3 device Switch A runs IGMPv2 and acts as the IGMP querier. Layer 2 device Switch B
runs IGMPv2 snooping.
•
The multicast source sends multicast data to multicast group 224.1.1.1. Receivers Host A, Host
B, and Host C belong to VLAN 2, VLAN 3, and VLAN 4, respectively.
Configure a sub-VLAN-based multicast VLAN on Switch B to meet the following requirements:
•
Switch A sends the multicast data to Switch B through the multicast VLAN.
•
Switch B forwards the multicast data to the receivers in different user VLANs.