![]() ![]() ![]() Note For complete syntax and usage information for virtual switch commands used in this chapter, see the publication at this location:Ĭisco IOS Virtual Switch Command Referenceįor complete syntax and usage information for the switch commands used in this chapter, see theĬisco IOS Command Reference Guides for the Catalyst 4500 Series Switch. VSS is supported on Cisco Release IOS XE 3.4.0SG and later. ![]() This chapter describes how to configure a virtual switching system (VSS) for the Catalyst 4500/4500X series switch (Supervisor Engine 7-E, Supervisor Engine 7L-E, Supervisor Engine 8-E, Supervisor Engine 8L-E, Catalyst 4500-X). Configuring the Rollback Timer to Safeguard Against Upgrade Issues.Aborting a Software Upgrade During ISSU.Using changeversion to Automate an ISSU Upgrade.ISSU using the Four Command Sequence: Step 4 (commitversion).ISSU using the Four Command Sequence: Step 3 (acceptversion).ISSU using the Four-command Sequence: Step 2 (runversion).ISSU using the Four-command Sequence: Step 1 (loadversion).Verifying the ISSU State Before Beginning the ISSU Process.Verifying Redundancy Mode Before Beginning the ISSU Process.Verifying the ISSU Software Installation.Compatibility Verification Using Cisco Feature Navigator.Performing an ISSU Upgrade: Two Methods.Traffic and Network Protocol Disruption During ISSU in a VSS.In-Service Software Upgrade (ISSU) on a VSS.Configuring Fast-Hello Dual-Active Detection.Configuring Enhanced PAgP Dual-Active Detection.Adding and Deleting a VSL Port After the Bootup. ![]() Converting the VSS Standby Switch to Standalone.Converting the VSS Active Switch to Standalone.Copying the VSS Configuration to a Backup File.(Optional) Configuring VSS Standby Switch Modules.Converting a Standalone Switch to Quad-Supervisor VSS.Converting an Existing VSS Switch to Quad-Supervisor VSS Mode.Converting the Switch to Virtual Switch Mode.Assigning Virtual Switch Domain and Switch Numbers.Backing Up the Standalone Configuration.Dual-Active Detection Restrictions and Guidelines.Multichassis EtherChannel Restrictions and Guidelines.General VSS Restrictions and Guidelines.VSS Configuration Guidelines and Restrictions.Dual-Active Detection Using Enhanced PAgP.Understanding Virtual Switching Systems.Restrictions for Virtual Switching Systems. ![]()
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