Specifications

Configuring Routing Between VLANs
How to Configure Routing Between VLANS
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DETAILED STEPS
Configuring Routing Between VLANs with IEEE 802.10 Encapsulation
This section describes the required and optional tasks for configuring routing between VLANs with
IEEE 802.10 encapsulation.
HDLC serial links can be used as VLAN trunks in IEEE 802.10 VLANs to extend a virtual topology
beyond a LAN backbone.
AppleTalk can be routed over VLAN subinterfaces using the ISL or IEEE 802.10 VLANs feature that
provides full-feature Cisco IOS software AppleTalk support on a per-VLAN basis, allowing standard
AppleTalk capabilities to be configured on VLANs.
AppleTalk users can now configure consolidated VLAN routing over a single VLAN trunking interface.
Prior to introduction of this feature, AppleTalk could be routed only on the main interface on a LAN
port. If AppleTalk routing was disabled on the main interface or if the main interface was shut down, the
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
router isis [tag]
Example:
Router(config)# isis routing test-proc2
Enables IS-IS routing, and enters router configuration
mode.
Step 4
net network-entity-title
Example:
Router(config)# net
49.0001.0002.aaaa.aaaa.aaaa.00
Configures the NET for the routing process.
Step 5
interface type slot/port.subinterface-number
Example:
Router(config-if)# interface fastethernet 2.
Specifies the subinterface on which ISL will be used.
Step 6
encapsulation isl vlan-identifier
Example:
Router(config-if)# encapsulation isl 101
Defines the encapsulation format as ISL (isl), and specifies
the VLAN identifier.
Step 7
clns router isis network [tag]
Example:
Router(config-if)# clns router is-is network
test-proc2
Specifies the interfaces that should be actively routing
IS-IS.