Setting up a default gateway - Windows Network

Scenario:

10.26.44.1-254 / 24 IP Range

Domain Controller/DHCP/DNS setup on 10.26.44.10
Using 2 x Cisco 3750 (Cascaded)

My issue:

I have setup the DC and configured DNS.  In getting to look at things, I can't for the life of me remember how to configure the Default Gateway.  Is the default gateway the IP address of the Switch (?) or is it the IP address of the DNS/Domain Controller (in which case I either need to add a second NIC and assign the .1 or add it as a second NIC to the system)?

The Domain Controller DHCP will be handing out DHCP addresses to a group of machines that will be in a different IP Range (Different VLAN).. and the VLAN will assumably be configured on the switch.

Various systems in the 10.26.44.XX range will need to get to that second VLAN as well, but they will have a second IP address in that range to "see" that network.

So in terms of configuring the default gateway on a flat network (where would I do that)?

II am not sure why I can't figure this out, I must just be really tired... lol..

Thanks For Any Help!
bdixon105Asked:
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Glen KnightCommented:
The default gateway is the IP address of the device that provides access to another network, the gateway is only used for this.  


Therefore it would be an IP address of a routing device that provides access to the internet or other networks/vlan's
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bdixon105Author Commented:
So in this case the IP address of the Cisco 3750.. since that is where routing takes place?

Just making sure.

Thanks for the help!
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evil_hitmanCommented:
the default gateway is typically the router used to get to the internet
The second vlans default gateway will need to be the device that is routing between the vlans and the primary vlans default gateway (which could be the same device) would need to know how to reach the second vlan.

If you are running 2 independent networks and no routing is occurring between the two then just wherever your internet comes from.
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Glen KnightCommented:
>>So in this case the IP address of the Cisco 3750.. since that is where routing takes place?


Absolutely ;)
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bdixon105Author Commented:
Isn't it great what being overly tired can do.. it makes the most simple answers totally non-obvious.

Thanks guys!

:)
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EKRINCommented:
The Gateway is usually the IP address of your internet router, since that is your gateway to the internet.
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