02-17-2009 09:07 PM - edited 03-04-2019 03:36 AM
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.
Solved! Go to Solution.
02-17-2009 11:53 PM
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
02-17-2009 11:03 PM
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
02-17-2009 11:53 PM
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
02-18-2009 12:06 AM
Hello Paolo,
I didn't know this feature it is the right tool for his needs
Best Regards
Giuseppe
02-18-2009 12:26 AM
Yes. Nothing else works for async.
02-18-2009 01:06 AM
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
02-18-2009 01:12 AM
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.
10-11-2016 05:34 AM
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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