Configuring VLANs 597
Configuring IP-Based VLANs
Beginning in Privileged EXEC mode, use the following commands to
associate an IP subnet with a configured VLAN. The VLAN does not need to
be configured on the system to associate an IP subnet with it. You can create
up to 256 VLAN to MAC address associations.
Configuring a Protocol-Based VLAN
Beginning in Privileged EXEC mode, use the following commands to create
and name a protocol group, and associate VLANs with the protocol group.
When you create a protocol group, the switch automatically assigns it a
unique group ID number. The group ID is used for both configuration and
script generation to identify the group in subsequent commands.
A protocol group may have more than one interface associated with it, but
each interface and protocol combination can be associated with one group
only. If adding an interface to a group causes any conflicts with protocols
currently associated with the group, adding the interface(s) to the group fails
and no interfaces are added to the group. Ensure that the referenced VLAN is
created prior to the creation of the protocol-based group except when GVRP
is expected to create the VLAN.
Command Purpose
configure Enter global configuration mode.
vlan database Enter VLAN database mode.
vlan association subnet
ip-address subnet-mask
vlanid
Associate an IP subnet with a VLAN.
•
ip-address
— Source IP address. (Range: Any valid IP
address)
•
subnet-mask
— Subnet mask. (Range: Any valid subnet
mask)
•
vlanid
— VLAN to associated with subnet. (Range: 1-
4093)
CTRL + Z Exit to Privileged EXEC mode.
show vlan association
subnet [
ip-address ip-
mask ]
Display the VLAN associated with a specific configured IP-
Address and netmask. If no IP Address and net mask are
specified, the VLAN associations of all the configured IP-
subnets are displayed.
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