TermServ

From FrogspawnWiki

This is the config added to a Cisco 2600 with an NM-16A module in it to turn it into a terminal server.

These terminal servers are truly awesome for a lab environment - the terminal server connects to the console ports of your devices to give you remote access to those consoles.

! always recommended, particularly useful here for the ip host
! statments below

no ip domain-lookup


! I'm creating a loopback interface to use for reverse telnet
! connections it isn't necessary (you can use a physical 
! interface) but a loopback will always be up. I chose 11 to 
! give breathing space should I want a lower loopback for OPSF 
! ID or some such.

interface Loopback11
 description Loopback for async connections
 ip address 1.1.1.1 255.255.255.255


! Line numbering varies by router. This was set up on a 2600 with
! an NM-16A in slot 1, these are the appropriate line numbers for
! that.
! On a 2509 or 2511 the line numbers run from 1 up to 8 or 16
! For 3600s and 2600s with NM-16a and NM-32a cards it's 
! "slot_num * 32 + line"
! http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a00801ca70b.shtml

line 33 48
 session-timeout 20 
 exec-timeout 0 0
 no exec
 transport input all


! Finally a few host entries so that I can just type line1 through
! line16 to connect to whatever is on lines 1 through 16 
! respectively.
! These are of the format ip host [name] [port] [address]
! port number is 2000 + line number, so line 33 is 2033

ip host line1 2033 1.1.1.1
ip host line2 2034 1.1.1.1
ip host line3 2035 1.1.1.1
ip host line4 2036 1.1.1.1
ip host line5 2037 1.1.1.1
ip host line6 2038 1.1.1.1
ip host line7 2039 1.1.1.1
ip host line8 2040 1.1.1.1
ip host line9 2041 1.1.1.1
ip host line10 2042 1.1.1.1
ip host line11 2043 1.1.1.1
ip host line12 2044 1.1.1.1
ip host line13 2045 1.1.1.1
ip host line14 2046 1.1.1.1
ip host line15 2047 1.1.1.1
ip host line16 2048 1.1.1.1

References

How Async Lines are Numbered in Cisco 3600 Series Routers