telnetd: Telnet device drivers missing: No such device

[Tammy Liang]

When I tried to telnet, I got error msg below. I checked telnet is listening. The telnet drivers and device files are there with correct major number and minor number via running lsdev and ll /dev/pts/t* and ll /dev/telnetm. So why can I not telnet in some times? Thanks for any suggestion.

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telnetd: Telnet device drivers missing: No such device
Local flow control off
Connection closed by foreign host.

[Ivan Ferreira · Accepted solution]

Considering that lsdev is an HP-UX command, probably you are talking about hp-ux. Also, this is a common problem, please see:

http://docs.hp.com/en/B3921-90010/nstrtel.5.html
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=990231
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=695790
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=38003

[Tammy Liang]

Thanks for reply. I checked the URL link.
Looks like may need to increase kernel parameters for telnet which require system reboot. I don't think I have corrupt telnet
drivers and device. I will try to reboot the system first, and monitor it, see if we need to increase the size.