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New Member

Serial over IP

Hi.

Having 2 windows computers with hyperterminal (in real life i have 2 non ip devices with rs232, 19200 bps, flow control: none, stop bits 1. For the purpose of test i'll use hyperterm) and 2 cisco routers 2811. Each workstation terminates a serial cable in one 2811.

Can someone recommend a technology to make the 2 hyperterminals talk serially over IP.

I was looking for other ideas apart from SLIP . I think it's possible to encapsulate that into PPP as well, but can't find much documentation.

Basically i'm looking for documentation on a technology that would transparently encapsulate this serial conversation over IP.

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: Serial over IP

Hi, this is asynch transport and is done routinely with cisco routers. See:

http://www.cisco.com/en/US/docs/ios/12_0t/12_0t5/feature/guide/asyncudp.html

7 REPLIES
Hall of Fame Super Silver

Re: Serial over IP

Hello Claudiu,

I would consider L2tPv3 and DLSW+.

for L2tpv3

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtl2tpv3.html#wp1043078

for DLSW+

http://www.cisco.com/en/US/docs/ios/11_3/ibm/configuration/guide/bcdlsw.html#wp2144

but I have doubts they can support Rs-232: L2tp3 can transport PPP frames.

I tried to search and I've found some third party devices

http://www.connectivity.avocent.com/products/network-based/

ESP-2 MI Serial Hub

or SW based see

http://www.taltech.com/products/tcpcom.html

using a PC

I remember another thread mentioning a standard for this kind of transport.

Hope to help

Giuseppe

Hall of Fame Super Gold

Re: Serial over IP

Hi, this is asynch transport and is done routinely with cisco routers. See:

http://www.cisco.com/en/US/docs/ios/12_0t/12_0t5/feature/guide/asyncudp.html

Hall of Fame Super Silver

Re: Serial over IP

Hello Paolo,

I didn't know this feature it is the right tool for his needs

Best Regards

Giuseppe

Hall of Fame Super Gold

Re: Serial over IP

Yes. Nothing else works for async.

New Member

Re: Serial over IP

Hi. Thanks for the sugestion

Indeed this seems to do the job.

With the only drawback that is unreliable being on top of UDP. I would have prefered a TCP solution.

Thanks

Hall of Fame Super Gold

Re: Serial over IP

You can do it over tcp too. Just have a telnet autocommand to the "raw port", that is 2000 + line number. Basically one router is active, the other waits for the connection.

People used that for years before the feature I posted the link about.

New Member

I know the solution to work

I know the solution to work with serial port over IP network - the software http://www.eltima.com/serial-over-ip/. I use it to access serial devices connected to PC. 

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