General Networking/Lan/Wan/long distance serial connection

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QUESTION: hi,

i am using a device which has a serial port for configuration(something like gsm modem which uses the AT commands).

         RS-232 serial
device <==================> PC

now i wanna do the configuration from somewhere else,so i think i should use two router with serial modules.
         
device <====> Router1 <-----------> Router2 <===> PC

routers connected to each other by ethernet cables.

questions:
1- is this new topology possible?
2-which serial module should i use?
3- how should i configure the routers?

best regards,
Mohsen

ANSWER: Hi Mohsen

Yes - this sounds possible.
You'll need to let me know which Router you are using for
me to recommend the correct serial interface to use.
Is it a Cisco device?
Router configuration will depend upon the make of the
machine.
Also, you'll need a crossover Ethernet cable for the router->router
connection.

Regards,

Scott



---------- FOLLOW-UP ----------

QUESTION: thank you.

i have two cisco 2821.
i need to know the serial module type(i think of wic-2T) and router configurations.


thank you very much

ANSWER: Hi mohsen,

The WIC-2T interface should be fine, it supports:
Point-to-Point protocol (PPP) or Frame Relay and Data Terminal Equipment/Data Communications Equipment (DTE/DCE).


The following are examples configurations and you'll need to know
which protocol and IP addresses the RS-232 interfaces is(are) using:


PPP:

Router(config)#interface Serial 0/0
Router(config-if)#ip add 10.0.0.1 255.255.255.0
Router(config-if)#encapsulation ppp
Router(config-if)#no shutdown

--------------

HDLC:
as above but-
encapsulation hdlc
(this is the default encapsulation)

----------------------


Here's a link that may help too:
http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a008

Oh and you'll need this cable:

Cisco Serial RS-232 cable ( DTE ) - 26 pin Smart Serial - M - (DB-25) - M


Regards,

Scott.



---------- FOLLOW-UP ----------

QUESTION: dear scott,
thank you for your answer.

i will check these and response soon.

regards,
Mohsen

Answer
Hi Mohsen,

I was thinking about your configuration requirements.
My query is your connection requirements. I'm not 100%
what you are wishing to achieve.
Remote configuration of the routers can be achieved via
telnet or SSH via IP. That would be the easiest solution
to remote configuring your routers but ensure there are
no ACL restricting your own access.
Let me know how you get on.


Regards,

Scott.

General Networking/Lan/Wan

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Scott McQueen

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All Networking and Internetworking questions. Specialist in Cisco Systems equipment.

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17 years experience in the Networking industry working for the likes of Siemens and Kingston Communications.

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