Users Guide

Table Of Contents
show ipv6 mld snooping summary
Displays the number of MLD-enabled snooping instances.
Syntax
show ipv6 mld snooping summary
Parameters None
Default None
Command Mode EXEC
Usage
Information
None
Example
OS10# show ipv6 mld snooping summary
Maximum number of IGMP and MLD Instances: 1024
Total Number of enabled MLD Instances: 512
Supported
Releases
10.5.2.1 or later
Multicast snooping on VLANs
OS10 supports multicast snooping (IGMP and MLD snooping) on all the supported platforms in the Full Switch Mode and the
SmartFabric Services Mode. Starting from Release 10.5.2.1 and later releases:
OS10 supports multicast snooping with VLAN scale profile configuration. However, this support is not available on the
S4200-ON series switches.
To enable the snooping querier functionality on scaled VLANs, you must use the mode l3 command.
With scale profile VLAN configuration, multicast snooping is enabled only at the global level and disabled at the per VLAN
interface level.
Multicast snooping is supported on a maximum of 512 VLANs or 1024 instances (IGMP snooping on 512 VLANs and MLD
snooping on 512 VLANs). If there are more than 1024 instances, multicast snooping is disabled on the remaining VLANs. A
syslog message similar to the following appears:
IGMP/MLD Snooping instance limit exceeded. IGMP/MLD snooping would not be enabled on
further vlans.
When the number of configured VLAN instances goes below 1024, a syslog message similar to the following appears:
IGMP/MLD Snooping instance limit receded.IGMP/MLD snooping can be enabled on some
vlans.
Upgrade from an earlier release to Release 10.5.2.1 introduces the following changes. The following table indicates the multicast
snooping configuration setting at the global level and at the per VLAN interface level pre and post upgrade.
Table 89. Full Switch Mode
Scale
profile
VLAN
configur
ation
Upgrade from 10.5.0.x or earlier to
10.5.2.1 or later
Upgrade from 10.5.1.0 to 10.5.2.1 or later Restrictions
Disabled Pre Upgrade Post Upgrade Pre Upgrade Post Upgrade OS10 supports
multicast
snooping only on
up to a maximum
of 1024 VLAN
instances. If the
number of VLAN
instances exceed
1024, multicast
Global: Enabled
Per VLAN:
Enabled
Global: Enabled
Per VLAN: Enabled
Global: Enabled
Per VLAN:
Enabled
Global: Enabled
Per VLAN: Enabled
until the maximum
number of VLAN
instances (1024)
is reached and
disabled for the
remaining VLANs.
1056 Multicast