[rancid] terminal width on Cisco ASA

[Per-Olof Olsson]

john heasley skrev 2011-09-09 18:07:
> Fri, Sep 09, 2011 at 03:53:14PM +0000, john heasley:
>>> In later versions of clogin width set to 80
>>
>> i changed that to 132 for clogin [-s|-c], but this was to stop a few
>> show commands from oscillating, particularly show vlan.  but, i've not
>> seen the device wrap other lines as thread is implying for nexus and
>> ASA, of which I have none.  is this perhaps driven by some other variable
>> on these devices, such as terminal type?  ie: particular types have or
>> lack some capability.  500 seems like it would not be strictly portable.
>
> fwiw, the desired effect from my PoV is that the device do no screen
> manipulation in any manner what so ever for -c or -s (command or script)
> mode of the login scripts.  no line length handling, no line shifting,
> no bolding, refreshing, etc etc.


Sorry.
Some days, most get wrong.


1. First nexus that fooled me.

After some test I find out that turning of pager also turn off wrapping.
(Nexus 5000 running version 4.2(1)N2(1a) )

Can't find any notes of this in Nexus manuals. Only ACE manual have a 
note about terminal length settings:
"A value of 0 instructs the ACE to scroll continuously (no pausing) and 
overrides the terminal width command."

For NX-os it looks like "terminal length 0" is what needed for initial 
terminal settings to rancid.




2. Thanks for the note. I have installed the wrong version when I 
updated clogin.in

Rewrite it one more time to make i easy to read and use the same lines 
for command and script.
I still like to ad "terminal width 0" to one of ours 6500. The output 
from show vlan is 600+ character long! And it's easier to post process 
one liners from rancid.

-x_test-----------------------
show terminal
exit
-eof--------------------------

-s_test-----------------------
send "\r"
expect -re $prompt  {}
send "show terminal\r"
expect -re $prompt  {}
send_user $expect_out(buffer)
send "exit\r"
-eof--------------------------

/115-> clogin -x x_test  cisco_6500
cisco_6500
spawn ssh -c 3des -x -l rancid cisco_6500

cisco_6500>enable
Password:
cisco_6500#
cisco_6500#terminal width 0
cisco_6500#terminal length 0
cisco_6500#show terminal
Line 1, Location: "", Type: "xterm"
Length: 0 lines, Width: 0 columns
Baud rate (TX/RX) is 9600/9600
...

/116-> clogin -s s_test cisco_6500
cisco_6500
show terminal
Line 1, Location: "", Type: "xterm"
Length: 0 lines, Width: 0 columns
Baud rate (TX/RX) is 9600/9600


/117-> clogin -x x_test nx-5000
nx-5000
spawn ssh -i .ssh/Rancid-to-Nexus -c 3des -x -l rancid nx_5000
Nexus 5000 Switch
...
nx-5000#
nx-5000# terminal width 0
                         ^
% Invalid number, range is (24:511) at '^' marker.
nx-5000# terminal length 0
nx-5000#  show terminal
TTY: /dev/pts/2 Type: "xterm"
Length: 0 lines, Width: 81 columns
Session Timeout: 30 minutes
...


/118-> clogin -s s_test nx_5000
nx_5000
  show terminal
TTY: /dev/pts/2 Type: "xterm"
Length: 0 lines, Width: 81 columns
Session Timeout: 30 minutes
...


After install new patch I test to run it on our site with a mix of 
2950,2960,3750, 3560, 6500 and nx-5010's.



My new patch---------------------------------------------
*** clogin.in.ORG       Wed Oct  6 22:31:24 2010
--- clogin.in   Thu Sep 15 05:20:01 2011
***************
*** 621,626 ****
--- 621,634 ----
             # subsequent expects to handle everything as normal.
             set command "set logging session disable;$command"
         } else {
+ # To prevent diffs from some IOS "show vlan" output
+ # use fixed line width
+ #         send "terminal width 80\r"
+ #         expect -re $prompt  {}
+ # some IOS "no wrap"
+           send "terminal width 0\r"
+           expect -re $prompt  {}
+ #
             send "terminal length 0\r"
         }
         # match cisco config mode prompts too, such as router(config-if)#,
***************
*** 919,927 ****
             expect -re $prompt  {}
             send "set logging session disable\r"
         } else {
!           send "terminal length 0\r"
             expect -re $prompt  {}
!           send "terminal width 80\r"
         }
         expect -re $prompt      {}
         source $sfile
--- 927,940 ----
             expect -re $prompt  {}
             send "set logging session disable\r"
         } else {
! # use fixed line width
! #         send "terminal width 80\r"
! #         expect -re $prompt  {}
! # some ios "no wrap"
!           send "terminal width 0\r"
             expect -re $prompt  {}
! #
!           send "terminal length 0\r"
         }
         expect -re $prompt      {}
         source $sfile
-end of patch------------------------------------



Notes:
1. I can't test extreme switches but it look lite clogin skip initial 
terminal settings only for commands
       “ if { [ string compare "extreme" "$platform" ] } {“
not for scripts!

2. Is there any dist of clogin having “terminal width” for commands?
clogin 2.3.6 only have it for scripts!


/Peo
----------------------------------------------------------
Per-Olof Olsson               Email: peo at chalmers.se
Chalmers tekniska högskola    IT-service
Hörsalsvägen 5                412 96 Göteborg
Tel: 031/772 6738  Fax: 031/772 8680
----------------------------------------------------------