Cisco Catalyst 4500 Series Software Configuration Guide

8-18
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 8 Configuring the Cisco IOS XE In Service Software Upgrade Process
How to Perform the ISSU Process
Downgrading ISSU from Cisco IOS XE 3.4.0SG/15.1(2)SG to a Prior Release
Because a Cisco IOS XE 3.4.0SG/15.1(2)SG image uses a new CLI format and prior images use earlier
CLI formats, the downgrade procedure include the following:
• Downgrading mgmtVrf from new CLI format to older CLI format, removing any IPv6 addresses on
the interface.
• Downgrading the image on your switch to a prior release.
• Reconfiguring the IPv6 addresses on fa1.
A configuration like the following will appear on a switch running a Cisco IOS XE 3.4.0SG/15.1(2)SG
image:
vrf definition mgmtVrf
!
address-family ipv4
exit-address-family
!
address-family ipv6
exit-address-family
!
interface FastEthernet1
vrf forwarding mgmtVrf
ip address 10.1.1.1 255.255.255.0
speed auto
duplex auto
ipv6 address 2000::1/64
!
Step 1 Perform a downgrade to a release prior to Cisco IOS XE 3.4.0SG/15.1(2)SG.
Switch# config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# no vrf upgrade-cli multi-af-mode common-policies vrf mgmtVrf
You are about to downgrade to the single-AF VRF syntax commands.
You will lose any IPv6 address configured on interfaces
belonging to downgraded VRFs.
Are you sure ? [yes]:
% ipv6 addresses from all interfaces in VRF mgmtVrf have been removed
Number of VRFs downgraded: 1
Switch(config)#
Your configuration will appear as follows:
ip vrf mgmtVrf
!
interface FastEthernet1
ip vrf forwarding mgmtVrf
ip address 10.1.1.1 255.255.255.0
speed auto
duplex auto
!
Step 2 Perform an ISSU downgrade to a pre-Cisco IOS XE 3.4.0SG/15.1(2)SGn image.
Step 3 Reconfigure the IPv6 address.
Switch# config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface fa1
Switch(config-if)# ipv6 address 2000::1/64

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