by giuslar on Mon Mar 15, 2010 7:20 pm
Hello James,
numbering is fixed, however newer ISR routers allow you to refer to a line in two ways:
or by using a single integer or a slot#/port# . As showed in the document linked by Ganesh.
this is line 88 and 1/22 at the same time.
However, if you are going to use it to build a terminal server the TCP port will be 2000+line# so the best thing to do is to to take a sh line and to note the range of line numbers of async ports.
Also from the same document:
>> The "Line" column displays the actual line number. The actual line number associated with each interface is determined by complicated equations that vary according
to the hardware setup (such as a network module, interface card or interface card in a network module). On these platforms, the line numbers have limited significance. The same can be used in the reverse telnet process. Ideally, rotary under the line configuration should be widely used for reverse telnet applications.
To be noted older routers had aux port as the last one and so its number changed depending on what was installed on it.
With C3600 a fixed numbering (up to 32 lines per network slot position) has been introduced.
Hope to help
Giuseppe
