Cisco Catalyst 4500 Series

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CHAPTER

10-1

Software Configuration Guide—Release IOS XE 3.5.0E and IOS 15.2(1)E

OL_28731-01

Configuring Supervisor Engine Redundancy Using

RPR and SSO on Supervisor Engine 6-E and

Supervisor Engine 6L-E

Catalyst 4500 series switches allow a redundant supervisor engine to take over if the active supervisor

engine fails. In software, supervisor engine redundancy is enabled by running the redundant supervisor

engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode.

Note The minimum ROMMON requirement for running SSO is Cisco IOS Release 12.1(20r)EW1 or

Cisco IOS Release 12.2(20r)EW1.

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

Catalyst 4510R switches.

Note For information on Cisco nonstop forwarding (NSF) with SSO, see Chapter 12, “Configuring Cisco NSF

with SSO Supervisor Engine Redundancy.”

This chapter contains these major sections:

• About Supervisor Engine Redundancy, page 10-2

• About Supervisor Engine Redundancy Synchronization, page 10-4

• Supervisor Engine Redundancy Guidelines and Restrictions, page 10-5

• Configuring Supervisor Engine Redundancy, page 10-7

• Performing a Manual Switchover, page 10-12

• Performing a Software Upgrade, page 10-13

• Manipulating Bootflash on the Redundant Supervisor Engine, page 10-14

Note For complete syntax and usage information for the switch commands used in this chapter, see 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 a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the

Cisco Catalyst 4500 Series - Page 437