Configuring DLSw Ethernet redundancy

DLSw Ethernet redundancy implements backup and load sharing, and enables multiple DLSw routers to connect to the same Ethernet.

To prevent two or more DLSw routers connected to the same Ethernet from establishing multiple circuits for the same SNA session, DLSw Ethernet redundancy uniformly manages all DLSw routers connected to the same Ethernet. DLSw Ethernet redundancy selects a primary router, which will uniformly manage the circuits. The primary router can assign circuits to implement load sharing (try to establish the same number of circuits on each DLSw router). Any circuit established on a DLSw router must be permitted by the primary router. The circuit assignment policy improves the network resource usage when multiple DLSw routers are running.

To configure DLSw Ethernet redundancy:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter interface view.

interface interface-type interface-number

N/A

3. Configure DLSw Ethernet redundancy.

dlsw ethernet-backup enable multicast-mac-address [ priority priority ]

Disabled by default.

4. Enable switches’ support for DLSw Ethernet redundancy.

dlsw ethernet-backup map local-mac local-mac-address remote-mac remote-mac-address [ neighbor neighbor-mac-address ]

Optional.

Disabled by default.

5. Configure the Ethernet redundancy timer.

dlsw ethernet-backup timer timer

Optional.

The timer (in milliseconds) is in the range of 100 to 5000 and defaults to 500.