Subnet issues

Hi Everyone,

   I'm trying to connect a WRVS4400N Cisco SB router to an existing network.  I can statically select the WAN to the required subnet of 255.255.252.0 however I'm having issues getting the LAN traffic to the internet.  It won't let me select 255.255.252.0 in the LAN subnet.  Should I try switching it from Gateway to Router mode?

   Urgent help needed!!

Thanks - Zack
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zack4x4Asked:
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peeaCommented:
> I can statically select the WAN to the required subnet of 255.255.252.0
> It won't let me select 255.255.252.0 in the LAN subnet.

Got confused about where the given network mask (255.255.252.0) is to be deployed? WAN or LAN?
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zack4x4Author Commented:
The WAN is on subnet 255.255.252.0 the LAN WRVS4400N won't let me select that subnet.  It's stuck at 255.255.255.*
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Fred MarshallPrincipalCommented:
I wonder if the WAN subnet isn't supposed to be 255.255.255.252??
Just a guess.  Seems like a really big subnet for a WAN at 255.255.252.0 !!
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peeaCommented:
Yes, normally for a peer-to-peer WAN connection it is recommended to use a 30-bit network mask which is 255.255.255.252.

But here, a bit confused about the description above.
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zack4x4Author Commented:
Hi Guys - I figured out the problem...Whoever installed the first router in the chain set it to bridge so every computer in the place was getting an external ip!  idiots...  It's fixed now but I'll split the points between you two.

Thanks - Zack
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peeaCommented:
Really an interesting case. Later if someone says getting external IPs on LAN, the first thing to be checked is if the router is working in bridge mode.

Thanks for sharing the story, and also thanks for the points. :-)
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