Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 182)

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USER’S GUIDE

182 CyberSWITCH

EMERGENCY TELNET SERVER PORT NUMBER BACKGROUND INFORMATION

There are some Telnet client programs that do not clear Telnet connections when terminating

Telnet sessions. Since they do not clear the Telnet connections, those connections stay alive and

soon all Telnet sessions are used up. Once this happens, no more Telnet sessions can be established

until the inactivity timer of one of the sessions expires.

However, if the idle timer of the administrative session is disabled, you may need to reboot the

CyberSWITCH. To avoid this, a special Telnet server that uses a particular TCP port is provided. If

you Telnet into this special server (the Emergency Telnet Server) you will be placed into a session

which prompts you for an action on each of the existing Telnet sessions.

The emergency Telnet session allows you to terminate Telnet sessions only when all Telnet sessions

are used up. An emergency Telnet server is available to clean up dead Telnet sessions. This Telnet

server needs a unique port number in order to function.

The following example screen illustrates a successful emergency Telnet session:

The following screen illustrates a situation where Telnet sessions are still available. The Emergency

Telnet session then simply informs you that you can not terminate Telnet sessions under these

circumstances (no emergency exists).

Emergency Telnet session active

Enter password(s) for ’ADMIN’ user.

Enter password: ******

-------- ------- ------------ ---------- -------- ------------------------

ADMIN 257 May 20 12:34 800 MANAGE Telnet (199.120.211.70)

Do you wish to terminate this session (Y or N) [default = Y]? <RET>

-------- ------- ------------ ---------- -------- ---------------

ADMIN 511 May 20 12:30 1025 SHELL 199.120.211.71

Do you wish to terminate this session (Y or N) [default = Y]? <RET>

-------- ------- ------------ ---------- -------- ---------------

ADMIN 734 May 20 12:35 740 LOGIN 199.120.211.69

Do you wish to terminate this session (Y or N) [default = Y]? <RET>

Emergency Telnet session active

Enter password(s) for ’ADMIN’ user.

Enter password: ******

There are Telnet connections available for administrative sessions.

Please use an administrative session to terminate abandoned sessions.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 182

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