Command Reference Guide

94 ● dlsw ethernet-backup map 3Com Router 5000 Family and Router 6000 Family
Command Reference
dlsw ethernet-backup map
Purpose Use the dlsw ethernet-backup map command to enable the Ethernet switch
support feature for DLSw Ethernet redundancy, that is, to map the MAC address of a
remote SNA device to a local virtual MAC address.
Use the
undo dlsw ethernet-backup map command to remove the map
entries between the MAC address of the specified remote SNA device and the local
virtual MAC address.
Syntax dlsw ethernet-backup map local-mac local-mac-address remote-mac
remote-mac-address [ neighbour neighbour-mac-address ]
undo dlsw ethernet-backup map local-mac local-mac-address remote-mac
remote-mac-address
Parameters local-mac-address
Local virtual MAC address takes the format of
xxxx-xxxx-xxxx in token ring order.
remote-mac-address
MAC address of the SNA device on the remote WAN. It
takes the format of xxxx-xxxx-xxxx in token ring order.
neighbour-mac-address
MAC address of another router for backup (the
address of the interface connected to the Ethernet). It
takes the format of xxxx-xxxx-xxxx in token ring order.
Example Enable the Ethernet switch support feature for DLSw Ethernet redundancy.
[3Com ] interface ethernet 1/0/0
[3Com -Ethernet1/0/0] dlsw ethernet-backup enable 9999-9999-9999
priority 10
[3Com -Ethernet1/0/0] dlsw ethernet-backup map local-mac 8888-8888-8888
remote-mac 0000-1738-6dfd
View This command can be used in the following views:
■ Ethernet Interface view
Description After you configure the dlsw ethernet-backup map command, the router
handles frames in this way:
■ When receiving a frame from the WAN, the router translates the source MAC
address of the frame (that is, the MAC address of the remote SNA device) into its
local virtual MAC address before forwarding the frame to the Ethernet.
■ When receiving a frame from the Ethernet, the router translates the destination
MAC address into the MAC address of the remote SNA device before forwarding
the frame to the WAN.
After you enable the Ethernet switch support feature and specify the MAC address of
a neighbor on a DLSw router, the router sends its MAC address map to the neighbor