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how to associate subnet with vlan

Posted on 2011-03-22
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635 Views
Last Modified: 2012-05-11
I would like to find how can we configure VLAN associate with particular subnet , so that once port is assigned to particular vlan , device attached to this port it receives ip add from particular subnet.

Shinda
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Question by:shindasingh
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LVL 4

Expert Comment

by:m_walker
ID: 35195788
Assing the VLAN an IP Address (or connect to a router).  Ensure the router from that vlan to the dhcp forwards DHCP packets. (on cisco it will be an "ip helper" setting).

then DHCP will then get a request "forwarded" from that network and know which pool to assign the IP from.


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Author Comment

by:shindasingh
ID: 35203603
M Walker,,

Thanks ,, If yoy could explain further Like with examples of commands , I am actually not Cisco expert So please assist further..

Shinda
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LVL 4

Accepted Solution

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m_walker earned 500 total points
ID: 35203631
Setup the vlan (if it does not exist)
config term
vlan <id>
   name some-name

exit back to the top config level (exit once)

interface vlan <some id as above>
description <some description if you want, not needed be helps>
ip address <ip address> <subnet mask>
ip helper-address <ip of your dhcp server>

exit back on level

You will need to ensure you can route from the swich (ping your dhcp ip) to test
Also ensure the vlan itself is routing ok (set a static IP on the remote computer with the VLAN IP address as its gateway.

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Author Comment

by:shindasingh
ID: 35204399
Thanks Walker..

It worked for me..
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LVL 4

Expert Comment

by:m_walker
ID: 35204425
Any reason why I did not get any points for the solution?
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LVL 4

Expert Comment

by:m_walker
ID: 35206318
As per my last post.  I would like to know why I did not get any points.

I beleive this post shows I helped.

shindasingh:Thanks Walker..

It worked for me..



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