Switch SVI Configuration
A switch is configured to have all its management controlled through VLAN 1 by default and also all of the available ports are assigned to VLAN 1 by default.
For security reasons, it is recommended to use a VLAN other than VLAN 1 for the management VLAN, such as VLAN 99.
Configuring the Management Interface
Enter Global Configuration Mode
s1> enable S1# configure terminal
Enter interface configuration mode for the SVI
S1(config)# interface [interface-id]
Configure the management interface IPv4 address
S1(config-if)# ip address [ip-address] [subnet-mask]
Configure the management interface IPv6 address (if any)
S1(config-if)# ipv6 address [ipv6-address/prefix]
Enable the interface
S1(config-if)# no shutdown
Exit Interface Configuration Mode
S1(config-if)# exit
Configuring the Default Gateway
S1(config)# ip default-gateway 192.168.1.1
[NOTE] The switch needs to have a default gateway configured if it will be managed remotely from other networks that are not directly connected.
[NOTE] Since an IPv6 enabled router will automatically receive its default gateway information from a Router Advertisement (RA) message, there is no need to configure an IPv6 Default Gateway.
Save the configuration
S1(config)# exit S1# copy running-config startup-config
Switch SVI Complete Configuration Example
S1> enable S1# configure terminal S1(config)# interface vlan 99 S1(config-if)# ip address 192.168.99.2 255.255.255.0 S1(config-if)# ipv6 address 2001:db8:cafe:99::1/64 S1(config-if)# no shutdown S1(config-if)# exit S1(config)# ip default-gateway 192.168.99.1 S1(config)# exit S1# copy running-config startup-confi