6.4 Managing Display Attributes
Display commands control the content of the banner and the command line prompt.
6.4.1 Banners
The switch can display two banners:
Login banner: The login banner precedes the login prompt. One common use for a login banner is to warn against unauthorized network access attempts.
motd banner: The message of the day (motd) banner is displayed after a user logs into the switch.
This output displays both banners in bold:
This is a login banner
switch login: john
Password:
Last login: Mon Jan 14 09:24:36 2013 from adobe-wrks.aristanetworks.com
This is an motd banner
switch>
These commands create the login and motd banner shown earlier in this section.
switch(config)#banner login
Enter TEXT message. Type 'EOF' on its own line to end.
This is a login banner
EOF
switch(config)#banner motd
Enter TEXT message. Type 'EOF' on its own line to end.
This is an motd banner
EOF
switch(config)#
To create a banner:
Step 1 Enter global configuration mode.
switch#config
switch(config)#
Step 2 Enter banner edit mode by typing the desired command:
To create a login banner, type banner login.
To create a motd banner, type banner motd.
The switch responds with instructions on entering the banner text.
switch(config)#banner login
Enter TEXT message. Type 'EOF' on its own line to end.
Step 3 Enter the banner text.
This is the first line of banner text.
This is the second line of banner text.
Step 4 Press Enter to place the cursor on a blank line after completing the banner text.
Step 5 Exit banner edit mode by typing EOF.
EOF
switch(config)#
6.4.2 Prompt
The prompt provides an entry point for EOS commands. The prompt command configures the contents of the prompt. The no prompt command returns the prompt to the default of %H%P.
Characters allowed in the prompt include A-Z, a-z, 0-9, and these punctuation marks:
! @ # $ % ˆ & * ( ) - = + f g [ ] ; : < > , . ? / ˜ n
The prompt supports these control sequences:
%s – space character
%t – tab character
%% – percent character
%H – host name
%D – time and date
%D{f_char} – time and date, format specified by the BSD strftime (f_char) time conversion function.
%h – host name up to the first ‘.’
%P – extended command mode
%p – command mode
%r – redundancy status on modular systems (has no effect on a fixed system)
%R – extended redundancy status on modular systems – includes status and slot number (has no effect on a fixed system)
Example
This command creates a prompt that displays system 1 and the command mode.
host-name.dut103(config)#prompt system%s1%P
system 1(config) #
This command creates a prompt that displays the command mode.
host-name.dut103(config)#prompt %p
(config)#
These equivalent commands create the default prompt.
% prompt %H%P
host-name.dut103(config)#
 
 
% no prompt
host-name.dut103(config)#