Contents
viii
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
Displaying ISSU Compatibility Matrix Information 5-34
Displaying ISSU Compatibility Matrix Information 5-37
Related Documents 5-39
CHAPTER
6 Configuring the Cisco IOS XE In Service Software Upgrade Process 6-1
Related Documents 6-2
Prerequisites to Performing ISSU 6-2
About Performing ISSU 6-3
Stateful Switchover 6-3
NSF 6-5
ISSU Process 6-6
Performing an ISSU Upgrade: 2 Methods 6-11
Changeversion Process 6-12
Changeversion: Quick Option (LV to INIT) 6-12
Scheduled Changeversion: “in” and “at” Options 6-12
Changeversion Deployment Scenario 6-13
Aborting an In-Progress Changeversion Procedure 6-13
Guidelines for Performing ISSU 6-13
Compatibility Matrix 6-13
SNMP Support for ISSU 6-14
Compatibility Verification Using Cisco Feature Navigator 6-14
How to Perform the ISSU Process 6-15
Verifying the ISSU Software Installation 6-15
Verifying Redundancy Mode Before Beginning the ISSU Process 6-16
Verifying the ISSU State Before Beginning the ISSU Process 6-17
Loading New Cisco IOS XE Software on the Standby Supervisor Engine 6-18
Switching to the Standby Supervisor Engine 6-21
Stopping the ISSU Rollback Timer (Optional) 6-23
Loading New Cisco IOS XE Software on the New Standby Supervisor Engine 6-24
Using changeversion to Automate an ISSU Upgrade 6-25
Aborting a Software Upgrade During ISSU 6-31
Configuring the Rollback Timer to Safeguard Against Upgrade Issues 6-32
Displaying ISSU Compatibility Matrix Information 6-34
Cisco High Availability Features in Cisco IOS XE 3.1.0SG 6-35
CHAPTER
7 Configuring Interfaces 7-1
About Interface Configuration 7-2
Using the interface Command 7-2
Configuring a Range of Interfaces 7-4
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