Terminal server ports

Hi I saw the below command for terminal server. Is the port # 3 the physical port of the terminal server ? Thank you

ip host 3600-2 2003 12.1.1.11
eemoonAsked:
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ChrisCommented:
Have a look at the syntax for ip host here: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr/command/ipaddr-cr-book/ipaddr-i3.html#wp2322343528

Essentially, ip host manually assigns a hostname to an ip address on that particular switch. Think if it as essentially a hosts file.

In your command, the three fields are as follows:

Hostname: 3600-2
TCP port: 2003
IP address: 12.1.1.11

The TCP port field is used for commands within IOS to prevent you from having to manually enter a port each time. For example, if you were constantly sshing into the above device, but had changed the ssh port, you would ordinarily have to tell ssh which port to use each time. By specifying the port in the ip host command, you won't need to specify this each time you connect, as it will be the default port that ssh will try.
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eemoonAuthor Commented:
Thank you for your fast reply. I should have shown where the question is from. Please see the link:
http://www.cisco.com/c/en/us/support/docs/dial-access/asynchronous-connections/5466-comm-server.html

My understanding for it is that the port number 3 is the physical port of the terminal server, do you think so ?
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Joey YungSenior Network EngineerCommented:
No, it convert 2000 plus the line number equal to the physical port. You should "show line" on the router to identify for the physical port first:

Router#show line

  Tty Line Typ     Tx/Rx    A Modem  Roty AccO AccI  Uses  Noise Overruns  Int
    0    0 CTY              -    -      -    -    -     0      1    0/0      -
    1    1 AUX   9600/9600  -    -      -    -    -     0      0    0/0      -
    2    2 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/0    3 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/1    4 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/2    5 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/3    6 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/4    7 TTY   9600/9600  -    -      -    -    -     0      0    0/0     -
0/0/5    8 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/6    9 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/7   10 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/8   11 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/9   12 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/10   13 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/11   14 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/12   15 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/13   16 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/14   17 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -
0/0/15   18 TTY   9600/9600  -    -      -    -    -     0      0    0/0      -

As the above example, your mapping command "ip host 3600-2 2003 12.1.1.11" will mapped to port 0/0/0
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eemoonAuthor Commented:
Thank you so much for your explanation. and I am sorry for the delay responding due to another project.
Please see it below, which is a little different with your post show line. In my output, why it does not have interface, something like "0/0/1" and why 33 is its beginning of the show line? and where is 0 - 32 ?


ABCD#sh line
   Tty Typ     Tx/Rx    A Modem  Roty AccO AccI   Uses   Noise  Overruns   Int
      0 CTY              -    -      -    -    -      8       0     0/0       -
*    33 TTY   9600/9600  -    -      -    -    -    137      72     0/0       -
     34 TTY   9600/9600  -    -      -    -    -    158    9451     0/0       -
*    35 TTY   9600/9600  -    -      -    -    -    117  404184     0/0       -
     36 TTY   9600/9600  -    -      -    -    -     40  351441     0/0       -
*    37 TTY   9600/9600  -    -      -    -    -     56     514     0/0       -
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Joey YungSenior Network EngineerCommented:
Um... my experience is come from the 29xx routers with the async network modules, it maybe some difference due to the different platform and also the line number will be difference if you install the async module to slot0/slot1

But I think the concept should be similar, 2000 plus the line number equal to the physical port. For your output 2033 should be the port1.
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Joey YungSenior Network EngineerCommented:
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