Which redundancy mode for supervisor engine modules exhibits all of the following characteristics?
✑ Static routes are maintained during a switchover
✑ The Forwarding Information Base (FIB) is cleared during a switchover
✑ Dynamic route information is cleared during a switchover
✑ Route engine is initialized and switch modules are loaded

A. RPR

B. RPR+

C. SSO

D. NSF








 

Suggested Answer: B

Redundant supervisor engine modules can be configured in several modes. In route processor redundancy plus (RPR+) mode, the backup module is booted up and the supervisor and route engines initialize. However, no Layer 2 or Layer 3 functions are started, which means it will be necessary to start them after a failover. This also means the routing protocols must re-converge and the FIB table must be rebuilt, since it is derived from the routing table. The static routes are maintained in the running configuration, so they are not lost in the failover.
In route processor redundancy (RPR) mode, the module is booted, but the supervisor and route engines are not initialized.
In stateful switchover (SSO) mode, all functionality provided by RPR+ is available at failover, and the FIB table is not
Objective:
Layer 2 Technologies -
Sub-Objective:
Configure and verify other LAN switching technologies
References:
Cisco > Catalyst 6500 Release 12.2SX Software Configuration Guide > RPR Supervisor Engine Redundancy
Cisco > Catalyst 6000/6500 Series Switches with Redundant Supervisor Engines Software Image Upgrade Configuration Guide (4.5) > Background Information>
Supervisor Engine Redundancy

This question is in 300-115 Implementing Cisco IP Switched Networks (SWITCH) Exam
For getting Cisco Certified Network Professional (CCNP) Routing and Switching Certificate





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