Cisco Catalyst 4500 Series Software Configuration Guide

11-12
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 11 Configuring Supervisor Engine Redundancy Using RPR and SSO on Supervisor Engine 6-E and Supervisor
Performing a Manual Switchover
Note To manually synchronize individual elements of the standard auto-sync configuration, disable the default
automatic synchronization feature.
Note When you configure the auto-sync standard, the individual sync options such as no auto-sync
startup-config are ignored.
This example shows how to disable default automatic synchronization and allow only automatic
synchronization of the config-registers of the active supervisor engine to the redundant supervisor
engine, while disallowing synchronization of the startup configuration:
Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# no auto-sync standard
Switch(config-r-mc)# auto-sync config-register
Switch(config-r-mc)# end
Performing a Manual Switchover
This section describes how to perform a manual switchover (from the active supervisor engine to the
redundant supervisor engine) for test purposes. We recommend that you perform a manual switchover
prior to deploying SSO in your production environment.
Note This discussion assumes that SSO has been configured as the redundant mode.
To perform a manual switchover, perform this task on the active supervisor engine:
Be aware of these usage guidelines:
• To force a switchover, the redundant supervisor engine must be in a standby hot state. You can verify
the state with the show redundancy command. If the state is not standby hot, the
redundancy force-switchover command does not execute.
• Use the redundancy force-switchover command, rather than the reload command, to initiate a
switchover. The redundancy force-switchover command first verifies that the redundant
supervisor engine is in the correct state. If you enter the reload command and the status is not
standby hot, the reload command resets the current supervisor engine only.
Command Purpose
Step 1
Switch# show redundancy
Verifies that the peer state is in the standby hot state.
See the example of the show redundancy states
command on page 6-10.
Step 2
Switch# redundancy force-switchover
Launches switchover from the active supervisor engine
to the redundant supervisor engine.
If the state of the redundant supervisor engine is not
standby hot, this command does not execute.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E