Figure 288: Redundancy Connection for an M20 Router
Related
Documentation
M20 Router Redundant Routing Engines and SSBs on page 566•
Redundancy Connection for an M40e or M160 Router
Figure 289 on page 573 shows the connection between the master and backup host
modules on an M40e or M160 router. Keepalive messages are sent from one Routing
Engine to the other over the fpx2 interface found across the Peripheral Component
Interconnect (PCI) bridge. The keepalive message is received by the other host module
via the fxp1 interface. A keepalive response is sent back over the fpx2 interface to the
other Routing Engine. In this way, the master and the backup host modules exchange
state information.
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M Series and T Series Routers Monitoring and Troubleshooting Guide