ZyXEL Communications MES3500-24, User Manual

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Chapter 24 Multicast
MES3500-24/24F User’s Guide
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Unknown
Multicast Frame Specify the action to perform when the Switch receives an unknown multicast frame.
Select Drop to discard the frame(s). Select Flooding to send the frame(s) to all ports.
Reserved
Multicast Group The IP address range of 224.0.0.0 to 224.0.0.255 are reserved for multicasting on the
local network only. For example, 224.0.0.1 is for all hosts on a local network segment and
224.0.0.9 is used to send RIP routing information to all RIP v2 routers on the same
network segment. A multicast router will not forward a packet with the destination IP
address within this range to other networks. See the IANA web site for more information.
The layer-2 multicast MAC addresses used by Cisco layer-2 protocols,
01:00:0C:CC:CC:CC and 01:00:0C:CC:CC:CD, are also included in this group.
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.
Normal Leave Enter an IGMP normal leave timeout value (from 200 to 6,348,800) in miliseconds. Select
this option to have the Switch use this timeout to update the forwarding table for the
port.
In normal leave mode, when the Switch receives an IGMP leave message from a host on
a port, the Switch waits for IGMP reports after the multicast router sends out an IGMP
Group-Specific Query (GSQ) message to determine whether other hosts connected to the
port should remain in the specific multicast group.
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 on this port
from a host.
Fast Leave Enter an IGMP fast leave timeout value (from 200 to 6,348,800) in miliseconds. Select
this option to have the Switch use this timeout to update the forwarding table for the
port.
In fast leave mode, right after receiving an IGMP leave message from a host on a port,
the Switch sends out an IGMP Group-Specific Query (GSQ) message to determine
whether other hosts connected to the port should remain in the specific multicast group.
This helps speed up the leave process.
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 on this port
from a host.
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.
Table 61
Advanced Application > Multicast > Multicast Setting (continued)
LABEL DESCRIPTION