This is hopefully a simple question but I was curious about the way VTY's were displayed in the running configuration.
From my understanding vty's 0 thru 4 can not be deleted. On IOS 12.2(17a) I'm able to issue configuration commands for vty's lines 0 thru 15, and when I remove the issued commands, it only displays vty's 5 thru 15 in the running configuration.
example:
#show running-config
....
!
line con 0
session-timeout 10
stopbits 1
flowcontrol hardware
line aux 0
line vty 0 4
!
#configure t
(config)# line vty 0 15
(config-line)# full-help
(config-line)# exit
(config)# exit
#show running-config
....
!
line con 0
session-timeout 10
stopbits 1
flowcontrol hardware
line aux 0
line vty 0 4
full-help
line vty 5 15
full-help
!
#configure t
(config)# line vty 0 15
(config-line)# no full-help
(config-line)# exit
(config)# exit
#show running-config
....
!
line con 0
session-timeout 10
stopbits 1
flowcontrol hardware
line aux 0
line vty 5 15
!
Why doesn't the config list the vty's as being in one group when they're all configured identically? Why does IOS not list the active vty's 0 thru 4 in the configuration?
Just a bit curious about this because it annoys the ____ out of me.
