Understanding Redundant Routing Engines ! 493
Chapter 37: Monitoring Redundant Routing Engines
Understanding Redundant Routing Engines
Purpose Inspect redundant Routing Engines to minimize system process failures.
What Are Redundant
Routing Engines
Redundant Routing Engines are two Routing Engines that are installed in the same
router. One functions as the master, while the other stands by as a backup should
the master Routing Engine fail. By default, the Routing Engine in slot
0 is the master
(
RE0) and the one in slot 1 is the backup (RE1).
Redundant Routing Engine Characteristics
Table 109 describes redundant Routing Engine characteristics for routing platforms.
Table 109: M-series Platform Redundant Routing Engine Characteristics
The following sections describe the various routing platform Routing Engines:
! M10i Router Routing Engine Redundancy on page 494
! M20 Router Routing Engine Redundancy on page 495
! M40e and M160 Router Routing Engine Redundancy on page 496
! M320 Router Routing Engine Redundancy on page 497
! T320 Router and T640 Routing Node Routing Engine Redundancy on page 498
Component M10i M20 M40 M40e M160 M320
T320/
T640
Redundant Routing Engine X X
Redundant host modules
with Routing Engine and
MCS
XX
Redundant host subsystems
with Routing Engine and
Control Board
X
Redundant host modules
with Routing Engine and
Control Board
X
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