To set redundancy between two 10BASE-T Modules, connect two links between the modules. The redundant link must be connected to a port on the same 10BASE-T Module as the primary link. Use a crossover adapter between each link unless you choose to uncross port 8 on one of the modules to make the connection. Refer to Chapter 1 for information on using crossover mode. Then use the SET PORT <slot.port> MODE REDUNDANT <slot.port> command to specify which port is the primary link and which is the backup link.
Note: If the
Once redundancy is configured, a switchover will occur under three conditions: a link failure; port partition; or a jabber condition. The switchover occurs when the primary link fails. (Note that in the unlikely event of a partial break in the link, a switchover may not occur. In this situation, use Network Management to manually switch over the ports.)
Once the switchover occurs, and the primary link becomes operational, a
Refer to the ONline Ethernet Network Management Module Installation and Operation Guide for information on setting redundancy between
Designing and Expanding the Network 2 - 13