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Unless you are explicitly denying traffic and the 10.x.x.x subnet is properly routed to your network, you shouldn't have to do anything.
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The 10.x.x.x address will be using our gateway as the way out to the internet. &nbsp;If I just plug the 10.x.x.x into our switch we don't need to do an ip route 10.x.x.x 255.x.x.x 192.x.x.x (gw)? &nbsp;The 10.x.x.x device is new so there are no routes in the switch.
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You have been very stingy with information.<br />
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If you have, for example, a device with a 10.1.1.1/24 connected to your 192.168.2.14 switch, then you need to put a gateway of 10.1.1.2 (for example) on that switch and your upstream devices will need to route 10.1.1.0/24 to that 192.168.2.14 switch.<br />
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You'll need to provide a minimal diagram even if it's ascii art and a sanitized configuration for an exact answer.
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<a href="https://filedb.experts-exchange.com/incoming/2014/11_w47/883880/diagram.png" target="_blank" title="Brief diagram (15 KB)"><img alt="Brief diagram" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2014/11_w47/800_883880/diagram.png" /></a><br />
Here is a really quick diagram of what we have and are looking to do.
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diagram.png

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If I do an ip route of 10.91.2.254 255.255.255.0 10.91.2.1 on our main network switch that should allow the traffic out?
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Sample.jpg

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We are using layer 3 switching. &nbsp;There are no access lists in place. &nbsp;I was able to get the 2 networks to talk to each other but am not able to get out to the internet on the new 10.91.x.x address. Any suggestions?
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Thanks for all the help and suggestions I was able to get it to work.
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Our network is a 192.x.x.x address. &nbsp;We have a device that we need to allow from a 10.x.x.x network to access our network. &nbsp;What is the best way to do that on the cisco switch?
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Our network is a 192.x.x.x address.  We have a device that we need to allow from a 10.x.x.x network to access our network.  What is the best way to do that on the cisco switch?

Cisco Routing

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.