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command at the subinterface configuration mode level of the Cisco IOS software. An SVI is normally found on switches (Layer 3 and Layer 2). The configuration of the router is different when a router-on-a-stick. The solution is to use switched virtual interface – SVI. This configuration is based on the example provided in Cisco’s. Have your router advertise that network (in 1) via a dynamic routing protocol like RIP, OSPF, or EIGRP. Similarly, you may ask, what is the default SVI on a Cisco switch? Have the ISP or any other router on the other side of the NAT network create a static route for your 192.168.2.0/29, pointing to your router’s 192.168.1.2 IP address. The major difference here is that the SVI Layer 3 interface is virtual. The SVI adds Layer 4 connectivity between VLANs.Īdditionally, how do I create a SVI on a Cisco switch? You start by creating the Layer 2 VLAN on the switch, and then assign an IP address on the VLAN Layer3 interface ( SVI), just as you would on a physical router interface.
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The SVI provides a faster method for switching traffic between ports on the switch. The SVI provides a physical interface for remote access to the switch. An SVI cannot be activated unless associated with a physical port.Īlso asked, what is the purpose of the SVI on a Cisco switch? There is one-to-one mapping between a VLAN and SVI, thus only a single SVI can be mapped to a VLAN.
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A Switched Virtual Interface ( SVI) is a virtual interface (and port) that transmits only untagged-vlan packets for a managed switch.