Multicast Aging Time(Min) - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
Values
Valid Values
Enabled, Disabled
The following table lists the description of each value.
Value
Enabled
Disabled
Configuration Guidelines
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7.95 Multicast Aging Time(Min)

Description
The Multicast Aging Time(Min) parameter specifies the aging time of the router port in the
multicast group. The time is learnt by the board port.
This parameter decides the valid time of the router port in the multicast group. Within the aging
time period, if the router port is learnt again, its aging time is reset. Otherwise, when the aging
time expires, the relevant router port in the multicast group is aged. After the router port is aged,
the whole multicast group is deleted if no other router ports exist in the multicast group.
Impact on the System
The parameter value may affect the forwarding efficiency of the EVPLAN service.
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Issue 02 (2011-06-30)
To create and maintain a multicast service, select Enabled.
Otherwise, select Disabled.
If the aging time is extremely long, and if the multicast MAC address table in the board
fails to be updated in time, the board forwards the service packets incorrectly.
Consequently, the forwarding efficiency is decreased.
If the aging time is extremely short, the multicast MAC address table may be updated
rapidly. Moreover, a great number of received multicast service packets fail to be found in
the MAC address table. Consequently, the board broadcasts these data packets to all the
ports. As a result, the forwarding efficiency is also decreased.
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Default Value
Disabled
Description
If the IGMP Snooping protocol is enabled, multicast groups
and router ports can be generated.
If the IGMP Snooping protocol is disabled, multicast groups
and router ports cannot be generated.
7 List of Parameters
7-77