Reference Guide

Example (Brief)
OS10# show ipv6 interface brief
Interface admin/ IPV6 Address/ IPv6 Oper
Name protocol Link-Local Address Status
============================================================
Management 1/1/1 up/up fe80::20c:29ff:fe54:c852/64 Enabled
Vlan 1 up/up fe80::20c:29ff:fe54:c8bc/64 Enabled
Ethernet 1/1/2 up/up fe80::20c:29ff:fe54:c853/64
100::1/64
1001:1:1:1:20c:29ff:fe54:c853/64 Enabled
Ethernet 1/1/3 up/up fe80::4/64
3000::1/64
4000::1/64 Disabled
Ethernet 1/1/4 up/up fe80::4/64
4::1/64
5::1/64 Enabled
Supported
Releases
10.2.0E or later or later
Internet Group Management Protocol
Internet Group Management Protocol (IGMP) is a communications protocol that hosts use on IPv4 networks to establish
multicast group memberships.
OS10 supports IGMPv1, IGMPv2, and IGMPv3 to manage the multicast group memberships on IPv4 networks.
NOTE: OS10 does not support IGMP snooping in VLT environments.
IGMP snooping
IGMP snooping enables switches to use the information in IGMP packets and generate a forwarding table that associates ports
with multicast groups. When switches receive multicast frames, they forward them to their intended receivers.
OS10 supports IGMP snooping on VLAN interfaces.
Configure IGMP snooping
● Enable IGMP snooping globally with the ip igmp snooping enable command in the CONFIGURATION mode. This
command enables IGMP snooping on all VLAN interfaces.
● (Optional) You can disable IGMP snooping on specific VLAN interfaces using the no ip igmp snooping command in the
VLAN INTERFACE mode.
● In a network, the snooping switch is connected to a multicast Router that sends IGMP queries. On a Layer 2 network that
does not have a multicast router, you can configure the snooping switch to act as querier. Use the ip igmp snooping
querier command in the VLAN INTERFACE mode to send the queries.
● OS10 learns the multicast router interface dynamically based on the interface on which IGMP membership query is received.
To assign a multicast router interface statically, use the ip igmp snooping mrouter interface interface—type
command in VLAN INTERFACE mode.
● (Optional) Configure the IGMP version using the ip igmp version version-number command in the VLAN
INTERFACE mode.
● (Optional) The fast leave option allows the IGMP snooping switch to remove an interface from the multicast group
immediately on receiving the leave message. Enable fast leave with the ip igmp snooping fast-leave command in
VLAN INTERFACE mode.
● (Optional) Configure the time interval for sending IGMP general queries with the ip igmp snooping query-interval
query-interval-time command in VLAN INTERFACE mode.
● (Optional) Configure the maximum time for responding to a query advertised in IGMP queries using the ip igmp
snooping query-max-resp-time query-response-time command in VLAN INTERFACE mode.
● (Optional) Configures the time interval between group-specific IGMP query messages with the ip igmp snooping
last-member-query-interval query-interval-time command in VLAN INTERFACE mode.
Layer 3
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