Parameters:

 

 

 

Name

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

portid <portid-val>

This parameter specifies a bridge port for which IGMP Snooping

 

 

 

 

 

needs to be enabled or disabled.

 

 

 

 

 

Type:

Modify

--

Mandatory

 

 

 

 

 

 

Get

--

Optional

 

 

 

 

 

Valid values: 1 - 194

 

 

 

 

 

 

 

 

 

 

status Enable Disable

This parameter specifies whether IGMP Snooping is to be

 

 

 

 

 

enabled on the port.

 

 

 

 

 

 

Type:

Modify

--

Optional

 

 

 

 

 

 

 

 

 

 

leavemode Normal Fast

This parameter specifies the Igmp Snooping Leave message

 

 

 

 

FastNormal

processing mode for the port. If the mode is set to 'Normal', the

 

 

 

 

 

Leave message is forwarded to the Querier. Then, based on the

 

 

 

 

 

Query received from Querier, the Leave processing is triggered.

 

 

 

 

 

If the mode is set to 'Fast', the port is immediately deleted from

 

 

 

 

 

that multicast group on Leave message reception and then the

 

 

 

 

 

Leave message is forwarded. The mode should be set to 'Fast'

 

 

 

 

 

for a port only if there is one host behind the port. This is

 

 

 

 

 

because if there are multiple hosts behind the port then it will

 

 

 

 

 

lead to traffic disruption for other hosts who might still be

 

 

 

 

 

listening to that multicast group. If the mode is set to

 

 

 

 

 

'FastNormal', the Leave message is forwarded and the Leave

 

 

 

 

 

processing is triggered immediately without waiting for any

 

 

 

 

 

trigger from the Querier. The 'FastNormal' mode, thus, saves the

 

 

 

 

 

delay (equal to the time taken for Leave message to reach router

 

 

 

 

 

and Querier processing time for it and the time taken for Query

 

 

 

 

 

to reach IGMP Snoop module) in Leave processing.

 

 

 

 

 

Type:

Modify

--

Optional

 

 

 

 

 

Valid values: op module) in Leave processing.

 

 

 

 

 

 

 

 

 

 

pktpriority

This parameter specifies the Egress Priority to be set in case the

 

 

 

 

<pktpriority-val> none

Ethernet frames carrying IGMP packets sent over this port need

 

 

 

 

 

to be tagged by the control plane. In case the frame came

 

 

 

 

 

tagged, priority that came in the tagged frame will not be

 

 

 

 

 

changed. The configured priority will also be used for choice of

 

 

 

 

 

traffic class/Queue on outgoing interface whether the frame is

 

 

 

 

 

tagged . In case the bridge port is over an Aggregated ATM VC,

 

 

 

 

 

this will also be used to identify the VC, on which the packet is to

 

 

 

 

 

be sent. There is an additional support of invalid value for egress

 

 

 

 

 

priority in IGMP port info to indicate that the priority is not to be

 

 

 

 

 

forced on egress frame for this port.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

456

 

 

 

 

 

IDL series User Guide