Category Archives: Config Files
How to set history size on routers or switches
I wanted to see more than 10 lines in time so I needed a way to have that. History can be set up on console line and/or vty lines. Here is how you will do this on a switch:
SW1>ena SW1#conf t Enter configuration commands, one per line. End with CNTL/Z. SW1(config)#line con 0 SW1(config-line)#his SW1(config-line)#history ? size Set history buffer sizeSW1(config-line)#history si SW1(config-line)#history size ? <0-256> Size of history buffer SW1(config-line)#history size 256 SW1(config-line)#line vty 0 15 SW1(config-line)#hi SW1(config-line)#history size SW1(config-line)#history size 256 SW1(config-line)#exit SW1(config)#exit SW1#wr m 05:13:04: %SYS-5-CONFIG_I: Configured from console by console SW1#wr mem Building configuration... [OK] SW1#
It is the same configuration as for the switch:
R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#line con 0 R2(config-line)#his R2(config-line)#history size 256 R2(config-line)#exit R2(config)#line vty 0 15 R2(config-line)#hi R2(config-line)#history si R2(config-line)#history size 256 R2(config-line)#exit R2(config)#exit R2# Jun 12 17:34:34.055: %SYS-5-CONFIG_I: Configured from console by console R2#
It is ok when you read the commands, but if you want to copy and paste them it is difficult. So here are the commands as a script:
ena
conf t
line con 0
history size 256
exit
line vty 0 15
history size 256
exit
exit
wr mem
(you need to copy all, so that write memory to be executed)
Basic configuration on devices
Basic configuration on devices:
- set hostname;
- set secret password;
- set banner motd;
- encrypt passwords;
-
- line console 0
- set synchronous logging
- set idle time
- set password
- use login
-
- line vty 0 15
- set password
- use login
- set history size
Below you have the commands. The hostname is at the end, because if you want to copy-paste them, you will have to modify the hostname:
enable
conf t
enable secret cisco
banner motd #AUTHORIZED ACCESS ONLY !#
service password-encryption
line console 0
logging synchronous
exec-time 0 0
password cisco
login
history size 256
line vty 0 15
password cisco
login
history size 256
exit
hostname