Mac Address Table Configuration Task List - Planet XGS3-42000R User Manual

Three types of frames can be forwarded by the Chassis Switch:
 Broadcast frame
 Multicast frame
 Unicast frame
The following describes how the Chassis Switch deals with all the three types of frames:

Broadcast frame: The s witch can segregate collision domains but not broadcast domains. If no
VLAN is set, all devices connected to the Chassis Switch are in the same broadcast domain. When
the Chassis Switch receives a broadcast frame, it forwards the frame in all ports. When VLANs are
configured in the Chassis Switch, the MAC table will be adapted accordingly to add VLAN
information. In this case, the Chassis Switch will not forward the received broadcast frames in all
ports, but forward the frames in all ports in the same VLA N.

Multicast frame: When IGMP Snooping function is not enabled, multicast frames are processed in
the same way as broadcast frames; when IGMP Snooping is enabled, the Chassis Switch will only
forward the multicast frames to the ports belonging to the very multicast group.

Unicast frame: When no VLAN is configured, if the destination MAC addresses are in the Chassis
Switch MAC table, the Chassis Switch will directly forward the frames to the associated ports; when
the destination MAC address in a unicast frame is not found in the MAC table, the Chassis Switch
will broadcast the unicast frame. When VLA Ns are configured, the switch will forward unicast frame
within the same VLAN. If the destination MAC address is found in the MAC table but belonging to
different VLANs, the Chassis Switch can only broadcast the unicast frame in the VLAN it belongs to.

15.2 Mac Address Table Configuration Task List

1. Configure the MAC address aging-time
2. Configure static MAC forwarding or filter entry
1. Configure the MAC aging-time
Global Mode
mac-address-table aging-time
<0|aging-time>
no mac-address-table aging-time
2. Configure static MAC forwarding or filter entry
Global Mode
mac-address-table {static | blackhole}
address <mac-addr> vlan <vlan-id >
[interface [ethernet | portchannel]
<interface-nam e>] |
[source|de stination|both]
no mac-address-table {static | blackhole |
dynamic} [address <mac-addr>] [vlan
<vlan-id>] [interface [ethernet |
portchannel] <interface-name>]
Command
Command
Explanation
Configure the MAC address aging-time.
Explanation
Configure static MAC forwarding or filter
entry.
15-3