Character Set; Alphanumeric Strings - Cisco ASR 5500 Administration Manual

System Operation and Configuration

Alphanumeric Strings

Some CLI commands require the entry of an alphanumeric string to define a value. The string is a contiguous
collection of alphanumeric characters with a defined minimum and maximum length (number of characters).

Character Set

The alphanumeric character set is a combination of alphabetic (Latin letters) and/or numeric (Arabic digits)
characters. The set consists of the numbers 0 to 9, letters A to Z (uppercase) and a to z (lowercase). The
underscore character ( _ ) and dash/hyphen (-) are also considered to be members of the alphanumeric set of
characters.
Blank spaces (whitespaces or SPACE characters) should mostly be avoided in alphanumeric strings, except
in certain ruledef formats, such as time/date stamps.
Do not use any of the following "special" characters in an alphanumeric string except as noted below:
• & (ampersand)
• ' (apostrophe)
• < > (arrow brackets) [see exception below]
• * (asterisk) [see wildcard exception below]
• { } (braces)
• [ ] (brackets)
• $ (dollar sign) [see wildcard exception below]
• ! (exclamation point) [see exception below]
• ( ) [parentheses]
• % (percent) [see exception below]
• # (pound sign) [see exception below]
• ? (question mark)
• ' (quotation mark – single)
• " (quotation mark – double)
• ; (semicolon)
• \ (slash – backward) [see exception below]
• / (slash – forward) [see exception below]
• ~ (tilde)
• | (vertical bar) [see exception below]
The following characters may appear in strings entered in ruledefs, APNs, license keys and other
configuration/display parameters:
• < > (arrow brackets) [less than or greater than]
ASR 5500 System Administration Guide, StarOS Release 19
Alphanumeric Strings
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