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XG2000 series User's Guide
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All Rights Reserved, Copyright (C) PFU LIMITED 2009
z Static unicast address
By registering a unicast MAC address with the MAC address table, unicast frames are forwarded
to a specified port. Static unicast addresses are not subject to MAC address removal controlled
by the aging function.
To register, change or delete a static unicast address, carry out the following procedures
in the administrator EXEC mode.
Command Task
xg# configure terminal
Switch to global configuration mode.
xg(config)# bridge mac-address-table
static MAC [vlan <1-4094>]
{[port <1-20>] | [agg-port <1-10>]}
xg(config)# no bridge mac-address-table
static MAC [vlan <1-4094>]
Register a static unicast address and destination port with the
MAC address table (or remove them from it).
xg(config)# exit
Exit to administrator EXEC mode.
z Static multicast address
By registering a multicast MAC address with the MAC address table, a specific multicast frame
will be forwarded to a designated port.
To register, change or delete a multicast address, carry out the following procedures in
the administrator EXEC mode.
Command Task
xg# configure terminal
Switch to global configuration mode.
xg(config)# bridge mac-address-table
static MAC [vlan <1-4094>]
[port <1-20> [<1-20> ]]
[agg-port <1-10> [<1-10> ]]
xg(config)# no bridge mac-address-table
static MAC [vlan <1-4094>]
Register (or remove) a static multicast address table and
destination port.
For a multicast MAC address, multiple ports can be specified.
xg(config)# exit
Exit to administrator EXEC mode.
4.1.3 Jumbo Frame Support
The device can transmit jumbo frames of up to 16KB (16128 bytes).
To configure jumbo frame support, carry out the following procedure in the administrator EXEC mode.
Command Task
xg# configure terminal
Switch to global configuration mode.
xg(config)# bridge jumbo-frame
[{9216 | 12288 | 15360 | 16128}]
xg(config)# no bridge jumbo-frame
Enable (or disable) jumbo frame support.
xg(config)# exit
Exit to administrator EXEC mode.
4.1.4 Flow Control
Flow control is a function that prevents frame loss when the receive buffer in the switch overflows due to temporary traffic
overload by using a PAUSE frame.
When the device receives a PAUSE frame, it temporarily stops sending frames at the receive port. If the receive buffer
overflows, it is possible to restrict frame transmission from the connected device by sending a PAUSE frame.
For each port, it is possible to select whether or not to send/recive a PAUSE frame.
To change the flow control mode, carry out the following procedures in the administrator EXEC mode.
Command Task
xg# configure terminal
Switch to global configuration mode.
xg(config)# interface port 1 2 3
xg(config)# interface port range 1 3
Switch to the interface edit mode to specify the port(s) to be
configured for flow control.
In this example, the global interface configuration mode is
selected for ports 1 through 3.
xg(config-if)# flowcontrol
{ disable | only-receive | only-send |
send-receive }
Set the flow control mode.
xg(config-if)# exit
Exit to global configuration mode.
xg(config)# exit
Exit to administrator EXEC mode.