Planet Technology IP DSLAM IDL-4801 User Manual

Page 458

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IDL series User Guide

458

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.

IGMP PacketsPrio'

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

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.

MaxGroupAllowed

This parameter controls the no. of simultaneous channels that can

be received by this port

Querier Status

This parameter controls whether a port can become querier

McastVlan Status

This parameter controls the status of Multicast Vlan option on a

port

No McastVlan Match

Action

This parameter specifies the action to be taken when multicast

vlan can not be determined for a port where multicast vlan option

is enabled Possible action values will be :Drop, Transparently

forward, and Learn based on ingress vlan

Caution:
z

An entry in this table shall not be applicable for a bridge port created over the

PPPoE interface.








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