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connecting a linux router to a cisco 1841 router

Hello, as a Cisco newbie I am thinking about building a linux router (for a study project) to connect to a Cisco network (2 x 1841 routers).

Can somone please tell me what kind (standard) of serial interface card will I need to install on the Linux PC router to enable serial communications with the other two 1841s.

Thanks for any advice.

  • WAN Routing and Switching
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connecting a linux router to a cisco 1841 router

You should ask that in a Linux forum.

Cisco Employee

connecting a linux router to a cisco 1841 router

Hello Philip,

Regarding the standard of a serial interface that could be installed to a Linux box and yet be capable of talking to your router: if you have a HWIC-2T or HWIC-2A/S serial module, it is compatible with the following serial standards:

EIA-232, EIA-449, V.35, and X.21 are supported in DTE or DCE mode, and EIA-530 and EIA-530A are supported in DTE mode.

Taken from

Best regards,


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