Ip Igmp Snooping Vlan Mrd - Supermicro SSE-G2252 User Manual

SSE-G2252/SSE-G2252P Switches User's Manual

ip igmp snooping vlan mrd

This command enables sending of multicast router solicitation messages. Use the no
form to disable these messages.
Syntax
[no] ip igmp snooping vlan vlan-id mrd
vlan-id - VLAN ID (Range: 1-4093)
Default Setting
Enabled
Command Mode
Global Configuration
Command Usage
• Multicast Router Discovery (MRD) uses multicast router advertisement, multicast
router solicitation, and multicast router termination messages to discover multicast
routers. Devices send solicitation messages in order to solicit advertisement
messages from multicast routers. These messages are used to discover multicast
routers on a directly attached link. Solicitation messages are also sent whenever a
multicast forwarding interface is initialized or re-initialized. Upon receiving a
solicitation on an interface with IP multicast forwarding and MRD enabled, a router
will respond with an advertisement.
• Advertisements are sent by routers to advertise that IP multicast forwarding is
enabled. These messages are sent unsolicited periodically on all router interfaces
on which multicast forwarding is enabled. They are sent upon the expiration of a
periodic timer, as a part of a router's start up procedure, during the restart of a
multicast forwarding interface, and on receipt of a solicitation message. When the
multicast services provided to a VLAN is relatively stable, the use of solicitation
messages is not required and may be disabled using the no ip igmp snooping
vlan mrd command.
• This command may also be used to disable multicast router solicitation messages
when the upstream router does not support MRD, to reduce the loading on a busy
upstream router, or when IGMP snooping is disabled in a VLAN.
Example
This example disables sending of multicast router solicitation messages on VLAN 1.
SSE-G2252(config)#no ip igmp snooping vlan 1 mrd
SSE-G2252(config)#
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