Specifications

Configuring Routing Between VLANs
How to Configure Routing Between VLANS
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DETAILED STEPS
Configuring CLNS Routing over ISL
CLNS can be routed over VLAN subinterfaces using the ISL VLAN encapsulation protocol. The CLNS
Routing over ISL Virtual LANs feature provides full-feature Cisco IOS software CLNS support on a
per-VLAN basis, allowing standard CLNS capabilities to be configured on VLANs.
To route CLNS over ISL VLANs, you need to configure ISL encapsulation on the subinterface. Perform
the steps described in the following task in the order in which they appear.
SUMMARY STEPS
1. enable
2. configure terminal
3. clns routing
4. interface type slot/port.subinterface-number
5. encapsulation isl vlan-identifier
6. clns enable
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
xns routing [address]
Example:
Router(config)# xns routing 0123.4567.adcb
Enables XNS routing globally.
Step 4
interface type slot/port.subinterface-number
Example:
Router(config)# interface fastethernet 1/0.1
Specifies the subinterface on which ISL will be used.
Step 5
encapsulation isl vlan-identifier
Example:
Router(config-if)# encapsulation isl 100
Defines the encapsulation format as ISL (isl), and specifies
the VLAN identifier.
Step 6
xns network [number]
Example:
Router(config-if)# xns network 20
Enables XNS routing on the subinterface.