Cisco and Netgear Router

[Andy Guley]

I got tasked with having to connect a netgear router into my network.  The only way I can get the router to talk to my router is putting them on the same subnet.

Here is what my setup is like:

Cisco 29111 Router         Trunk Port              Cisco 3560             Access Port                         Netgear Router                            

10.110.141.254  /24                                        10.110.141.253   /24                                       192.168.23.1  /24                           

I created a vlan for the 3560 (vlan 333) for the Netgear Router to plugin.  The only way I was able to talk to the Netgear router was to put a subinterface on my 2911 of 192.168.23.254.  The third party has multiple networks in 192.168.X.X subnets.  All /24 masks

Once I take this interface down I can't talk to the 192.168.23.1 router.  Would it cause issues having both routers on the same subnet?  I am using static routes on my side to route everything I need to the 192.168.23.1 router.  The third party is also doing the same with static routes to get to my network.

I do not have administrative access to the Netgear and have never worked with them.

Thanks

[Kelvin Willacey · Accepted solution]

You need that interface in order to route traffic to the destinations behind the netgear router so what you are doing is correct.