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TOPIC: 2501 ethernet and serial

2501 ethernet and serial 9 years 9 months ago #18677

  • Brandonh
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the cisco 2501 has 1 ethernet and 2 serial interfaces is it possible to use a serial to ethernet converter in order to hook up to a ethernet cable modem or dsl ?
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Re: 2501 ethernet and serial 9 years 9 months ago #18684

  • DaLight
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I'm not a cisco guru and so stand to be corrected, but I'm pretty sure that a simple serial to ethernet converter will not do what you want as you're not just talking about rerouting simple wire connections. The differing protocols and speeds also need to be taken into account. You will need a device like a terminal server.
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Re: 2501 ethernet and serial 9 years 9 months ago #18690

  • d_jabsd
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the cisco 2501 has 1 ethernet and 2 serial interfaces is it possible to use a serial to ethernet converter in order to hook up to a ethernet cable modem or dsl ?

No, there is no such device other than using a second router.


You could use policy-based routing and NAT to create a router-on-a-stick that will allow you to use a single ethernet port for the inside and the cable/dsl modem.
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I found a adapter 9 years 9 months ago #18694

  • Brandonh
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I found a adapter that says terminal on it that goes from serial to ethernet. do you think that would work
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Re: I found a adapter 9 years 9 months ago #18696

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I found a adapter that says terminal on it that goes from serial to ethernet. do you think that would work

No, while it uses a rj-45 connector, it is still a serial line. Those are used for connecting to modems or the console/aux ports on other routers.

Serial and Ethernet are different physical entities and the only thing that can convert them from one to another is a router, even if they share a common connector -like an rj-45 connector on the terminal adapter.
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2 2501 routers 9 years 9 months ago #18697

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If I had 2 2501 routers could i use one of them to connect to a dsl or cable modem with its ethernet port? Could i alsothen route that connection out the serial port of the first router into the serial port of another 2501? Then use the ethernet port on the second router to connect to a switch so i could bring out internet accross my network?
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