ES4710BD 10 Slots L2/L3/L4 Chassis Switch
are configured in the switch, the MAC table will be adapted accordingly to add VLAN information. In this case, the switch will not forward the received broadcast frames to all ports, but forward the frames to all ports in the same VLAN.
2.Multicast frames: If IGMP Snooping function has not been enabled, multicast frames are processed in the same way as broadcast frames; when IGMP Snooping has been enabled, the switch will only forward the multicast frame to the ports belonging to the very multicast group.
3.Unicast frames: If no VLAN has been configured and the destination MAC addresses are in the switch MAC table, the switch will directly forward the frames to the associated ports; if the destination MAC address in a unicast frame were not found in the MAC table, the switch will broadcast the unicast frame. When VLANs are configured, the switch will forward unicast frames within the same VLAN. If the destination MAC address is found in the MAC table but belongs to different VLANs, the switch can still only broadcast the unicast frame in the VLAN it belongs to.
8.2MAC Table Configuration
8.2.1mac-address-table aging-time
Command:
Function: Sets the aging time for address mapping entries in the MAC table that have been dynamically learnt; the “no
Parameters: < age> is the aging time in seconds, the valid range is 10 to 100000; 0 for no aging.
Command mode: Global Mode
Default: The system default aging time is 300 seconds.
Usage Guide: A too short aging time results in many unnecessary broadcasts and causing performance degradation; too long aging time will leave some obsolete entries occupying MAC table space of. For this reason, the user should set a reasonable aging time according to the production conditions.
If the aging time is set to 0, addresses dynamically learned by the switch will not age in time, the addresses learned will be kept in the MAC table permanently.
Example: Setting the aging time for dynamically learned entries in the MAC table to 400 seconds.
8.2.2mac-address-table static
Command:
<interface-name>
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