Returning To A Previous Session; Returning To The Original Cli Session; Displaying A Telnet Trace; Enabling And Disabling Telnet Access - Cisco MGX 8850 (PXM1E/PXM45) Configuration Manual

Managing Telnet Access Features

Returning to a Previous Session

After you Telnet from one switch to another, enter the bye command or the exit command to close the
current session and return to the previous session. For example, if you telnet from Switch A to Switch B
to Switch C, the bye command will terminate the session on Switch C and display the session on Switch
B.

Returning to the Original CLI Session

After you Telnet from switch to switch, enter the escape character to close all Telnet sessions and return
to the original CLI session. The default escape sequence is Escape, Q (uppercase Q). Press Escape first,
then press Shift-Q. If you specified an alternate escape character when opening Telnet sessions, enter
that character in place of Q.
For example, if you Telnet from Switch A to Switch B to Switch C, the escape character sequence closes
the Telnet sessions on Switches B and C, and displays the CLI session on Switch A.

Displaying a Telnet Trace

After you Telnet from switch to switch, enter the trace escape character to display a list of connections
you have established between switches. The default escape sequence is Escape, g (lowercase g). Press
Escape first, then press g. If you specified an alternate escape character when opening Telnet sessions,
enter that character in place of g.
The following example shows a sequence of Telnet sessions and the trace that documents the sequence:
mgx8830a.1.PXM.a > telnet 172.29.52.88
Trying 172.29.52.88...
Connected to 172.29.52.88
Login: cisco
password:
mgx8830b.1.PXM.a > telnet 172.29.52.56
Trying 172.29.52.56...
Connected to 172.29.52.56
Login:
password:
mgx8830a.1.PXM.a >
-> local IP 172.29.52.56, next hop at 172.29.52.88
-> local IP 172.29.52.88, connected to server at 172.29.52.56
mgx8830b.1.PXM.a >

Enabling and Disabling Telnet Access

The Cisco MGX switches include a Telnet server that enables easy, insecure access from Telnet client
software running on a workstation or on another Cisco MGX switch. When using Telnet to access a
switch, all user ID, password, and session management information is transferred between the client and
the switch using clear text. Clear, or unencrypted text can be read by network analysis and snooping
tools.
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
9-58
Chapter 9 Switch Operating Procedures
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004