
Configuring ATM Services
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117374-B Rev. 00
Router redundancy requires at least two routers to be members of a router
redundancy group. One router acts as the primary router and provides normal
routing/bridging services. The other router acts as the secondary, backup router
and takes over if the primary router fails.
All members of an ATM router redundancy group must have the following
characteristics:
• Be the same ATM router type, for example, BCN
®
, BLN
®
, or System 5000
™
.
• Have the same hardware configuration, including CPU and interface module
types, and slot and port locations of the backed-up interfaces.
• Have the same software configuration. That is, you must be running the same
router software version and have the same loadable modules configured.
• Contain both a primary configuration file and a secondary configuration file.
• Have at least one legacy LAN connection between the routers in the
redundancy group.
Note: Bay Networks recommends at least two legacy LAN connections
between routers in the redundancy group.
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