Setting up a router as a Ethernet switch

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Colin Hartigan

Colin Hartigan

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Mar 20, 2014
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OK so I have a older Cisco Linksys E2500 wireless router. We recently upgraded to way better internet. We have Comcast internet and have one of there all in one modem and router. It works great. We ran a Ethernet cable through the wall to downstairs, it is connected to one of the Ethernet ports on the router. So what i did was connect that Ethernet line to my old wireless router. I wanted to configure as a Ethernet switch so I could hardwired my Xbox and computer. I have it in bridge mode currently but is still has dhcp on and i don't want it on i just want a Ethernet switch no wireless. So would I put it in static ip mode or what. I am a teenager am I'm good with technology but i just having some trouble and would appreciate anyone's knowledge in this area thank you
 
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Just be careful if you happen to have the lan ip set to the same ip as your main router it will cause major issues. Some router brand run different default subnets so sometime you can get lucky...but I would not chance it.

I would have to dig thought the wikidevi site but many routers actually have a 2 radio chips, a processor (ie the router) and a switch chip. The switch chip is connected to all the lan ports and connected to the router chip. Internally it works the same as if you were to buy a router with 1 lan port and 1 wan port and a switch with 5 ports and then connect them together. Some of the more advanced routers have moved the switch function into the processor chip but from what I can tell it still works the same way...
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bill001g

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Aug 9, 2012
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The setup is the same as if you were going to use this as a AP. First set it back to router mode some routers do very strange stuff when set to bridge mode. Then you want to change the IP to something that does not conflict with your new router ip. You also MUST disable the DHCP server you will have massive issues with 2 DHCP servers in a network. You should also be able to turn off the wireless radios but there are the rare routers that is not a option...if you can't turn them off just make sure the channels do not conflict with your main router.
 
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Colin Hartigan

Colin Hartigan

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Mar 20, 2014
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that all so factory reset it back to the way it was and then just disable dhcp and wireless 2.4 and 5
 
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Colin Hartigan

Colin Hartigan

Reputable
Mar 20, 2014
116
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4,710


ok so i factory reset then set it to automatic configuration then disable the dhcp and then disabled 2.4 and 5gh radio or wireless what ever it works but is this the same as an switch im thinking it is
 
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bill001g

Titan
Aug 9, 2012
28,318
2,754
125,640
Just be careful if you happen to have the lan ip set to the same ip as your main router it will cause major issues. Some router brand run different default subnets so sometime you can get lucky...but I would not chance it.

I would have to dig thought the wikidevi site but many routers actually have a 2 radio chips, a processor (ie the router) and a switch chip. The switch chip is connected to all the lan ports and connected to the router chip. Internally it works the same as if you were to buy a router with 1 lan port and 1 wan port and a switch with 5 ports and then connect them together. Some of the more advanced routers have moved the switch function into the processor chip but from what I can tell it still works the same way it is just on the same piece of silicon.

What this means is when you turn off most the features in the router the traffic will just pass back and forth in the switch chip and never to go to the router chip. There are some router that actually use the same switch chip as some of the 5 port external switches you can buy.
 
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