Cisco Systems WSC4507RE96V manual Overview of Supervisor Engine Redundancy

C H A P T E R 6

Configuring Supervisor Engine Redundancy on the Catalyst 4507R and 4510R Switches

This chapter describes how to configure supervisor engine redundancy on the Catalyst 4507R and Catalyst 4510R switches.

This chapter consists of the following major sections:

•Overview of Supervisor Engine Redundancy, page 6-1

•Understanding Supervisor Engine Redundancy, page 6-2

•Supervisor Engine Redundancy Guidelines and Restrictions, page 6-3

•Configuring Supervisor Engine Redundancy, page 6-4

•Synchronizing the Supervisor Engine Configurations, page 6-5

•Performing a Software Upgrade, page 6-6

•Copying Files to the Standby Supervisor Engine, page 6-7

Note For complete syntax and usage information for the switch commands used in this chapter, look at the Cisco Catalyst 4500 Series Switch Command Reference and related publications at this location:

http://www.cisco.com/en/US/products/hw/switches/ps4324/index.html

If the command is not found in the Catalyst 4500 Command Reference, it is located in the larger Cisco IOS library. Refer to the Catalyst 4500 Series Switch Cisco IOS Command Reference and related publications at this location:

http://www.cisco.com/en/US/products/ps6350/index.html

Overview of Supervisor Engine Redundancy

Catalyst 4500 series switches allow a standby supervisor engine to take over if the primary supervisor engine fails, thereby allowing the switch to resume operation quickly in the event of a supervisor engine failure. This capability is called supervisor engine redundancy. In software, this capability is enabled by route processor redundancy (RPR) operating mode.

	Software Configuration Guide—Release 12.2(20)EW
78-16453-01 A1		6-1