I started configuring a 2511 as a terminal server. I have a problem with the following command:
line con 0
transport input none
I can't give this command, because I can't give the command, "transport input' because in my router I don't have 'input option. Instead what I have is 'output' option. Then if I'm to give this command I will have to say, 'transport output none'
I have two octal cables connected to the 2511 (which is the terminal server I'm configuring) and the RJ45 ends to the other routers.
I have another problem in the following command as well:
line 1 4
exec-timeout 0 0
transport input all
line 5 16
exec-timeout 0 0
transport input all
when I give these command, I get a message saying that, 'Line 2 does not supprt modem control' and 'Line 5 does not support modem control'
However after finish configuring, when I telnet to the terminal I am suppose to asked for a username, because I give the following command:
But, may be because I get those error messages I do not get the screen, which asks me the username. When I telnet to the terminal server, I don't get anything on the screen and screen turns off in a few seconds, as if I'm trying to telnet without configuring a password.
I have used the same configuration at office. Then it works just fine.
I am very concerned about the two error messages I get and why I get them. Can you please explain why and give me a solution to over come this situation and to make it up and running.
Please follow the following (and note that you don't need anything mandatory under the consoles)
under the serial interface (If A/S):
--> physical-layer async
--> async mode interactive
under the async TTY line(s):
--> transport input telnet
--> stopbits 1
NOTE: "no exec" under the lines - Unwanted signals from the attached device do not launch. An EXEC session ensures that the line never becomes unavailable due to a rogue EXEC process.
and connect the cables to the console of your devices using the Octal male DB-68 (SCSI II) connector (CAB-OCTAL-ASYNC), since the CAB-OCTAL-ASYNC cable is itself rolled, you can connect each cable directly to the console ports of devices with the RJ-45 interfaces.
Issue this command to establish a reverse Telnet connection from your terminal server - console server - comm server:
telnet x.x.x.x 2yyy or [2000+yyy]
The x.x.x.x represents the IP address of any up/up interface on the Cisco router (recommended to be a Loopback) and yyy is the line number to which you want to connect (5 = 005). If you have already configured the TTY line, you can issue the telnet command from anywhere on the network that can ping the x.x.x.x interface.
To get yyy do "show line" and then add the number to 2000 thats how you get the 2yyy number (port number) to use to reverse telnet, ex: for line 5 use 2005.
Each line corresponds to an RJ-45 cable and thus to one of your devices.
To disconnect, hit Ctrl-Shift-6 and then x to get back to the router prompt and then type in disconnect to close the connection.
I can't give the command 'no exec'. The moment I give that command I don't see anything when I telnet. But without 'no exec' command under line 1 16 I get the option to enter the username. I configured it like this:
Below is the configuration. And you know something I tried it with another 2511 router. It worked.
My main problem in the router that it doesn't work, is that in that router the I get the following two errors.
in line console 0.
(config)#line con 0
But I should get an option called 'input' in here. I don't get that. Do you know why?
(config)#line 1 4
error: Line 2 does not support modem control
Why I get an error like that. I don't get it in any other routers. Is it a hardware problem?
I think mainly due to these two errors that I'm getting I can't properly configure the terminal server (router). Do I have to activate something to be able to issue those two commends or can it be a hardware error?
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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