Cisco IOS 小技巧

1. 在每個 show 指令輸出結果前加上 CPU utilization 和時間

C2821(config)#line vty 0 4
C2821(config-line)#exec prompt timestamp
C2821(config-line)#end
C2821#show cdp
Load for five secs: 1%/0%; one minute: 3%; five minutes: 3%
Time source is NTP, 15:42:24.997 CST Tue Jan 18 2011

Global CDP information:
Sending CDP packets every 60 seconds
Sending a holdtime value of 180 seconds
Sending CDPv2 advertisements is  enabled
C2821#

2. 將逃脫字元由 Ctrl-Shift-6-6-x 改成其他組合
如果覺得原來的 Ctrl-Shift-6-6-x 太麻煩,可以改掉(下面的例子改成 Ctrl-C):
 

C2821#show terminal
Line 515, Location: "", Type: "XTERM-COLOR"
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 9600/9600
Status: PSI Enabled, Ready, Active, No Exit Banner, Automore On
Capabilities: none
Modem state: Ready
Group codes:    0
Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
               ^^x     none    -     -       none
Timeouts:      Idle EXEC    Idle Session   Modem Answer  Session   Dispatch
00:10:00        never                        none     not set
Idle Session Disconnect Warning
never
Login-sequence User Response
00:00:30
Autoselect Initial Wait
not set
Modem type is unknown.
Session limit is not set.
Time since activation: 00:25:37
Editing is enabled.
History is enabled, history size is 20.
DNS resolution in show commands is enabled
Full user help is disabled
Allowed input transports are telnet ssh.
Allowed output transports are lat pad telnet rlogin lapb-ta mop v120 ssh.
Preferred transport is lat.
No output characters are padded
No special data dispatching characters
 
 
C2821#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
C2821(config)#line vty 0 4
C2821(config-line)#escape-character 3
C2821(config-line)#end
 
 
C2821#show terminal
Line 515, Location: "", Type: "XTERM-COLOR"
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 9600/9600
Status: PSI Enabled, Ready, Active, No Exit Banner, Automore On
Capabilities: none
Modem state: Ready
Group codes:    0
Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
^Cx none   -     -       none
Timeouts:      Idle EXEC    Idle Session   Modem Answer  Session   Dispatch
00:10:00        never                        none     not set
Idle Session Disconnect Warning
never
Login-sequence User Response
00:00:30
Autoselect Initial Wait
not set
Modem type is unknown.
Session limit is not set.
Time since activation: 00:25:49
Editing is enabled.
History is enabled, history size is 20.
DNS resolution in show commands is enabled
Full user help is disabled
Allowed input transports are telnet ssh.
Allowed output transports are lat pad telnet rlogin lapb-ta mop v120 ssh.
Preferred transport is lat.
No output characters are padded
No special data dispatching characters
C2821#

 
 
"3" 是 Ctrl-C 的 ASCII 碼,其他組合的 ASCII 碼可以在這裡查詢。至於 "^Cx" 後面的 "x" 可以忽略,實際操作的時候按下 Ctrl-C 即可。