Dell Force10 S4820T FTOS Command Reference Guide - Page 278
AS-Path Commands
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www.dell.com | support.dell.com Example Related Commands FTOS#show route-map route-map firpo, permit, sequence 10 Match clauses: Set clauses: tag 34 FTOS# route-map Configure a route map. AS-Path Commands This feature is supported on E-Series only, as indicated by this character under each command heading: e The following commands configure AS-Path ACLs. • deny • ip as-path access-list • permit • show config • show ip as-path-access-lists deny e Syntax Parameters Create a filter to drop routes that match the route's AS-PATH attribute. Use regular expressions to identify which routes are affected by the filter. deny as-regular-expression as-regular-expression Enter a regular expression to match BGP AS-PATH attributes. Use one or a combination of the following: • . = (period) matches on any single character, including white space • * = (asterisk) matches on sequences in a pattern (zero or more sequences) • + = (plus sign) matches on sequences in a pattern (one or more sequences) • ? = (question mark) matches sequences in a pattern (0 or 1 sequences). You must enter an escape sequence (CNTL+v) prior to entering the ? regular expression. • [ ] = (brackets) matches a range of single-character patterns. • ^ = (caret) matches the beginning of the input string. (If the caret is used at the beginning of a sequence or range, it matches on everything BUT the characters specified.) • $ = (dollar sign) matches the end of the output string. • _ = (underscore) matches a comma (,), left brace ({), right brace (}), left parenthesis, right parenthesis, the beginning of the input string, the end of the input string, or a space. • | = (pipe) matches either character. 278 | Access Control Lists (ACL)