Contents
9
Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex
Configuring a VSL 5-44
Adding and Deleting a VSL Port After the Bootup 5-44
Displaying VSL Information 5-45
Configuring VSL QoS 5-46
Configuring the Router MAC Address 5-47
Configuring Multichassis EtherChannels 5-48
Configuring Dual-Active Detection 5-52
Configuring Enhanced PAgP Dual-Active Detection 5-52
Configuring Fast-Hello Dual-Active Detection 5-53
Displaying Dual-Active Detection 5-54
In-Service Software Upgrade (ISSU) on a VSS 5-56
VSS ISSU Concept 5-56
Traffic and Network Protocol Disruption During ISSU in a VSS 5-57
Related Documents 5-58
Prerequisites to Performing ISSU 5-58
About Performing ISSU 5-59
Performing an ISSU Upgrade: Two Methods 5-59
Guidelines for Performing ISSU 5-63
Compatibility Matrix 5-63
Compatibility Verification Using Cisco Feature Navigator 5-64
How to Perform the ISSU Process 5-64
Verifying the ISSU Software Installation 5-65
Verifying Redundancy Mode Before Beginning the ISSU Process 5-65
Verifying the ISSU State Before Beginning the ISSU Process 5-67
ISSU using the Four-command Sequence: Step 1 (loadversion) 5-68
ISSU using the Four-command Sequence: Step 2 (runversion) 5-70
ISSU using the Four Command Sequence: Step 3 (acceptversion) 5-72
ISSU using the Four Command Sequence: Step 4 (commitversion) 5-72
Using changeversion to Automate an ISSU Upgrade 5-73
Aborting a Software Upgrade During ISSU 5-79
Configuring the Rollback Timer to Safeguard Against Upgrade Issues 5-81
The ISSU Compatibility Matrix 5-82
License Upgrade on a VSS 5-85
Programmability 6-1
About Programmability 6-1
Overview 6-1
Programmability Components 6-2
Protocols and Data Models for Programmatic Device Configuration 6-2
Default Configuration 6-3
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