Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

VLAN on 1751


can any one tell me the IOS for creating vlans in 1751 router.actually i wanted to make 1751 as vlan server, i was thinking that i will create all vlan interface in 2950 switch & let the inter-vlan routing happen in 1751 will that be fine isn't? or can i create vlan interface in 1751 rotuer itself?


Re: VLAN on 1751


You can use IOS version 12.3 Major Release. The latest IOS verion 12.4 also supports it.

Use the feature navigator to find exactly what you need.

Feature Navigator -->

"i was thinking that i will create all vlan interface in 2950 switch & let the inter-vlan routing happen in 1751"

>> is perfectly fine, You can do that. Just need to create trunk interface to carry all the VLANs on the single link to the router.

Re: VLAN on 1751

thanks abhishek,

but still i doubt, on the switch side i will say "switch port mode trunk" but on the router fas 0/0 what should i put?

Re: VLAN on 1751


At the router end you need to make different subinterfaces and assign encapsulation followed by the different vlan ids which you are trunking out on the switch port.

for more info do refer this link ..


Re: VLAN on 1751

but where will i set the domain name?

Re: VLAN on 1751

you can set your domain name at the SWITCH...for intervlan you just need to create the subinterfaces on router in order to make the intervlan routing ...



Re: VLAN on 1751

I think you have gone off track. What sprem suggested that you need to make sub interfaces on the interface of router with encapsulation enabled for all of them is the way to go about it.

Are you thinking in terms of VTP, so that the changes are relfected at the router end too? I am not sure about that. Perhaps you would have to make changes manually on the router.

Please rate all helpful posts.