Unable to telnet to HP Server

[ramesh_4]

I am not able to telnet to the server. I am getting the following error messages. Anyone cna tell me what is the porblem and also how to fix it?


telnetd: Telnet device drivers missing: No such device
Local flow control off

[Michael Tully]

Hi Ramesh,

Have you checked that there are enough
pseudo ttys configured?
In your kernel what are your parameters
for 'npty' and 'nstrpty' ?
Are you logged in on another session
somewhere so you can check, or can you use
someone elses terminal?

HTH
Michael

[A. Clay Stephenson]

Hi,

This usually indicates that device nodes used by telnet connections are either missing or there are not enough of them.

Go to Sam->Kernel Configuration ->Configurable Parameters

npty should be at least 200; if less than that set it 200; if greater double it.
nstrpty should be at least 60; if greater double it
nstrtel should also be at least about 60; if greater than 60 double it.

After setting these values choose Actions->Process New Kernel.

This will create new device nodes and gen a new kernel. When the machine reboots, you should be working.

Good luck, Clay

[Michael Tully]

Hi Ramesh,

If in your kernel you have 200 or more for npty and you don't have that many pseudo ttys configured you can create them using insf -n 'npty'. If they are the same number Clay's suggestion should fix it.


Cheers....
Michael

[Bill Hassell]

Driver numbers have been misassigned or the number of suitable device files is too low. Set the parameters:

ntpy nstrpty nstrtel

all to several hundred (300 or so) but if you will have more than 300 connections at the same time, increase them all accordingly. SAM is the easiest since it will automatically create/correct the device files. Otherwise, change the kernel parameters and use insf to create all the required device files.