Does a Cisco 2501 Router support InterVLAN Routing?

Unanswered Question
Mar 11th, 2007

Does a Cisco 2501 Router support InterVLAN Routing?

Does it support 802.1Q or ISL trunking?

What are the commands?

Which trunking does Cisco 2912XL-EN Switch support?

How do I find out the capabilities of Cisco devices.

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Overall Rating: 4 (5 ratings)
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Danilo Dy Sun, 03/11/2007 - 19:55

They should both support 802.1Q and ISL

For example, 2912XL-EN port FastEthernet0/12 is connected to 2501 port FastEthernet0. Try the following commands

For 802.1Q

1. 2501 Router

!

interface fastethernet0

no ip address

full-duplex

speed 100

!

interface fastethernet0.1

encapsulation 802.1Q

ip address 192.16.0.1 255.255.255.0

2. 2912XL-EN Switch

!

interface fastethernet0/12

switchport trunk encapsulation dot1q

switchport mode trunk

full-duplex

speed 100

For ISL

1. 2501 Router

!

interface fastethernet0

no ip address

full-duplex

speed 100

!

interface fastethernet0.1

encapsulation ISL

ip address 192.16.0.1 255.255.255.0

2. 2912XL-EN Switch

!

interface fastethernet0/12

switchport trunk encapsulation isl

switchport mode trunk

full-duplex

speed 100

thoran25@hotmail.com Sun, 03/11/2007 - 20:26

Cisco 2501 does not have fastethernet interface. It is a ethernet.

Encapulation command is not available on subinterface.

devang_etcom Sun, 03/11/2007 - 20:05

it is recommended to use 100Mbps FastEthernet for the InterVlan Routing...

and most probably 2501 router is not supporting the Intervlan routing... not sure... just check...

fire the following commands:

router#conf t

#interface ethernet 0

#encapsulation ?

if you find any dot1q or ISL option then that router is supporting intervlan routing... if you dont find any option like dot1q and ISL then you can not configure the Intervlan routing...

regards

Devang

Richard Burts Sun, 03/11/2007 - 21:19

The chip set used in the 2500 series routers (a very old part of the product line) do not support any kind of trunking.

HTH

Rick

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