837 Virtual Aux Port problem

[m.carrington]

I have configured the virtual aux port on an 837 to connect a modem to allow out of band management in the event of ADSL failure. However when I dial into the router there is no login required. The connection is there because if I reverse telnet to port 2001, as expected I need to login, then I can pass data end to end via the modem. Had a search on CCO nothing on bug tracker or configuration.I have used similar configurations on fixed aux ports no problem.

I have tried version 12.3(2)xc (shipped with), 12.3(8)T and 12.2(13)ZH4. Here is the relevant configuration, any thoughts?

modemcap entry netcomm:FD=&F:CD=&C1:DTR=&D2:SPD=R9:DTE=9600:SFL=&K4

line con 0

modem enable

stopbits 1

line aux 0

exec-timeout 5 0

password xxxxx

login

modem InOut

modem autoconfigure type Netcomm

length 25

transport input telnet

stopbits 1

flowcontrol software

before you ask, no I am not using ppp async dial up.

[tepatel · Accepted solution]

Here is the link which talks about Out Of Band management of 837 using Console port or Virtual Aux port.

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/826/swg/routconf.htm#1087698

I would use "modem autoconfigure discovery" under the line config instead of netcomm. Also try to use "flowcontrol hardware" instead of software.

You can turn on "debug confmodem" and try to clear that line and see that router is detecting the modem on the line or not.