Cisco Catalyst 4500 series Administration Manual page 437

Configuring
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.
The minimum ROMMON requirement for running SSO is Cisco IOS Release 12.1(20r)EW1 or
Note
Cisco IOS Release 12.2(20r)EW1.
This chapter describes how to configure supervisor engine redundancy on the Catalyst 4507R and
Catalyst 4510R switches.
For information on Cisco nonstop forwarding (NSF) with SSO, see
Note
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
•
For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Note
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
OL_28731-01
C H A P T E R
Supervisor Engine Redundancy
Software Configuration Guide—Release IOS XE 3.5.0E and IOS 15.2(1)E
10
Using
Chapter 12, "Configuring Cisco NSF
10-1