ES-2048 User’s Guide

The following table describes the labels in this screen.

Table 40 Multicast Setting

LABEL

DESCRIPTION

 

 

IGMP Snooping

Use these settings to configure IGMP Snooping.

 

 

Active

Select Active to enable IGMP Snooping to forward group multicast traffic only to

 

ports that are members of that group.

Host Timeout

Specify the time (from 1 to 16,711,450) in seconds that elapses before the switch

 

removes an IGMP group membership entry if it does not receive report messages

 

from the port.

Leave Timeout

Enter an IGMP leave timeout value (from 1 to 16,711,450) in seconds. This defines

 

how many seconds the switch waits for an IGMP report before removing an IGMP

 

snooping membership entry when an IGMP leave message is received from a

 

host.

802.1p Priority

Select a priority level (0-7) to which the switch changes the priority in outgoing

 

IGMP control packets. Otherwise, select No-Changeto not replace the priority.

IGMP Filtering

Select Active to enable IGMP filtering to control which IGMP groups a subscriber

 

on a port can join.

Unknown

Specify the action to perform when the switch receives an unknown multicast

Multicast Frame

frame. Select Drop to discard the frame(s). Select Flooding to send the frame(s)

 

to all ports.

Reserved

Multicast addresses (224.0.0.0 to 224.0.0.255) are reserved for the local scope.

Multicast Group

For examples, 224.0.0.1 is for all hosts in this subnet, 224.0.0.2 is for all multicast

 

routers in this subnet, etc. A router will not forward a packet with the destination IP

 

address within this range. See the IANA web site for more information.

 

Specify the action to perform when the switch receives a frame with a reserved

 

multicast address. Select Drop to discard the frame(s). Select Flooding to send

 

the frame(s) to all ports.

Port

This field displays the port number.

 

 

*

Settings in this row apply to all ports.

 

Use this row only if you want to make some settings the same for all ports. Use this

 

row first to set the common settings and then make adjustments on a port-by-port

 

basis.

 

Note: Changes in this row are copied to all the ports as soon as you

 

make them.

Immed. Leave

Select this option to set the switch to remove this port from the multicast tree when

 

an IGMP version 2 leave message is received on this port.

 

Select this option if there is only one host connected to this port.

 

 

Group Limited

Select this option to limit the number of multicast groups this port is allowed to join.

 

 

Max Group Num.

Enter the number of multicast groups this port is allowed to join. Once a port is

 

registered in the specified number of multicast groups, any new IGMP join report

 

frame(s) is dropped on this port.

IGMP Filtering

Select the name of the IGMP filtering profile to use for this port. Otherwise, select

Profile

Default to prohibit the port from joining any multicast group.

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Chapter 19 Multicast