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"Connection refused by remote host" message appears when trying to connect to a router, switch, or firewall

This message occurs when attempting to connect to a reverse telnet session that is already in progress. Issuing the "disconnect" command before closure of the telnet session will prevent refused sessions.

Rack-1>r1
Trying R1 (1.1.1.1, 2002)...
% Connection refused by remote host

Rack-1>

NOTE: Our sessions are back-to-back without any rack rest in between. You will most likely have to clear all the lines at start of your session. Please go to the list of clear line commands in this FAQ then copy and paste all the clear line commands you need instead of having to type them manually.

To resolve this issue, use one of the following methods:

Forcibly disconnecting a refused session: A session can be forcibly disconnected using the "clear line" command followed by the line number.  The line number is the last two digits at the end of the console output "Rack-1>r1 Trying R1 (1.1.1.1, 2002)..." Notice the number "2002". Take the last one or two digits, "2" and that is the line number.

Rack-1>clear line 2
[confirm]
[OK]
Rack-1>r1
Trying R1 (1.1.1.1, 2002)... Open

R1#

TIP: To see all the lines that are currently active, use the show line command.

There are many refused sessions: If the previous user of the rack did not properly disconnect or if your Internet connection got interrupted, then all of the telnet sessions may be refused. Copy and paste the following script into the terminal server to save some typing. It will forcibly disconnect all sessions. If needed the reload command is also available to restart the terminal server although reloading is usually not necessary.

TIP: Copy and paste the following into the terminal server at start of session to clear all the lines. Please note there is no line 1. The first line number either starts at 2 or 33 depending on with rack you are using.

For Racks 1 - 20

For Racks 21 - 22

clear line 1
y
clear line 2
y
clear line 3
y
clear line 4
y
clear line 5
y
clear line 6
y
clear line 7
y
clear line 8
y
clear line 9
y
clear line 10
y
clear line 11
y
clear line 12
y
clear line 13
y
clear line 14
y
clear line 15
y
clear line 16
y

clear line 33
y
clear line 34
y
clear line 35
y
clear line 36
y
clear line 37
y
clear line 38
y
clear line 39
y
clear line 40
y
clear line 41
y
clear line 42
y
clear line 43
y
clear line 44
y
clear line 45
y
clear line 46
y
clear line 47
y
clear line 48
y

Stop here for R&S.
For Security and Service Provider, there are a few additional lines:

clear line 17
y
clear line 18
y
clear line 19
y
clear line 20
y
clear line 21
y
clear line 22
y
clear line 23
y
clear line 24
y
clear line 25
y
clear line 26
y
clear line 27
y
clear line 28
y
clear line 29
y
clear line 30
y
clear line 31
y
clear line 32
y

clear line 49
y
clear line 50
y
clear line 51
y
clear line 52
y
clear line 53
y
clear line 54
y
clear line 55
y
clear line 56
y
clear line 57
y
clear line 58
y
clear line 59
y
clear line 60
y
clear line 61
y
clear line 62
y
clear line 63
y
clear line 64
y

Resume the Session: If you were the one who initially connected to the session, then you may use the "resume" command followed by the host name to reconnect to the session. Here is an example.

Rack-1>resume r1

[Resuming connection 1 to r1 ... ]

R1#

To save some typing, the resume command has a built in alias of just "r". Using "r" followed by the host name has the same effect.

Rack-1>r r1

[Resuming connection 1 to r1 ... ]

R1#

TIP: To see what sessions can be resumed, use the show sessions command.

 


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