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Configuring ISL for VLAN Routing
Note the following information for Serial 0:23 (the first half of the messages):
The second half of the messages display information for Serial 1:23.
Tips
If you are having trouble:
•
•
Configuring ISL for VLAN Routing
Use the Inter-Switch Link (ISL) to connect multiple Virtual LANs (VLANs) using the Ethernet
Media Access Control (MAC) and Ethernet media.
Configure
Cpo
Table 3-26
Step
1
2
3
4
5
6
7
3-48
Cisco AS5300 Universal Access Server Software Configuration Guide
— Layer 1 Status should be "DEACTIVATED."
— Layer 2 Status should be "TEI_ASSIGNED." (It might take several seconds for Layer 2
status to appear.)
— Layer 3 Status should be "0 Active Layer 3 Call(s)."
Make sure the cable connection is not loose or disconnected if the Layer 1 Status is
"Deactivated." This status message indicates a problem at the physical layer.
There may be a problem with your telco or the framing and line code types you entered may not
match your telco's. A Layer 2 error indicates that the access server cannot communicate with the
telco; there is a problem at the data link layer.
Configuring VLAN Routing
Command
5300> enable
Password: <password>
5300#
5300# configure terminal
Enter configuration commands, one per line. End
with CNTL/Z.
5300(config)#
5300(config)# interface fastethernet 0
5300(config-if)# no shut
5300(config)# interface fastethernet0.x
5300(config-subif)# encapsulation isl n
5300(config-subif)# ipx network 1-fffffffd
Purpose
Enter enable mode (also called
privileged EXEC mode).
Enter the password.
You have entered enable mode when the
prompt changes to
.
5300#
Enter global configuration mode. You
have entered global configuration mode
when the prompt changes to
5300(config)#.
Enter Ethernet interface configuration
mode.
Enable Fast Ethernet.
Enter the Fast Ethernet subinterface x,
where x is an integer value.
Set ISL encapsulation to the VLAN
identifier (n is a value between 1 and
1000).
1
Set the virtual IPX
network number for
the VLAN ID.
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