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What is an SVI? Can I configure multiple SVIs?

April 26, 2017configure svi svis

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What is an SVI? Can I configure multiple SVIs?

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A. SVI stands for Switched Virtual Interface. It represents a logical Layer 3 interface on a switch. For CatOS versions earlier than 7.6(1) and Cisco IOS Software Releases earlier than 12.2(14)SY, only one SVI is allowed as part of the firewall VLANs. In other words, only one Layer 3 interface can be configured between the FWSM and Multilayer Switch Feature Card (MSFC). An attempt to configure multiple SVIs produces a command-line interface (CLI) error message. For CatOS versions 7.6(1) and later and Cisco IOS Software Releases 12.2(14)SY and later, the FWSM supports multiple SVIs. By default, only one SVI is supported. Use one of these commands to enable support for multiple SVIs on your switch. • For CatOS, type set firewall multiple-vlan-interfaces enable . For Cisco IOS, type firewall multiple-vlan-interfaces .