Dell Force10 TeraScale C Series, Справочное руководство

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290 | Access Control Lists (ACL)
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• ip community-list
• permit
• show config
• show ip community-lists
deny
e
Create a filter to drop routes matching a BGP COMMUNITY number.
Syntax deny { community-number | local-AS | no-advertise | no-export | quote-regexp
regular-expressions-list | regexp regular-expression }
Parameters
Defaults Not configured.
Command Modes COMMUNITY-LIST
Command
History
community-number
Enter the community number in AA:NN format where AA is the AS number (2
bytes) and NN is a value specific to that autonomous system.
local-AS
Enter the keywords
local-AS
to drop all routes with the COMMUNITY attribute of
NO_EXPORT_SUBCONFED.
All routes with the NO_EXPORT_SUBCONFED (0xFFFFFF03) community
attribute must not be advertised to external BGP peers.
no-advertise
Enter the keywords
no-advertise
to drop all routes containing the well-known
community attribute of NO_ADVERTISE.
All routes with the NO_ADVERTISE (0xFFFFFF02) community attribute must not
be advertised to other BGP peers.
no-export
Enter the keywords
no-export
to drop all routes containing the well-known
community attribute of NO_EXPORT.
All routes with the NO_EXPORT (0xFFFFFF01) community attribute must not be
advertised outside a BGP confederation boundary.
regexp
regular-expression
Enter the keyword
regexp
followed by a regular expression. 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.
Version 8.1.1.0 Introduced on E-Series ExaScale
pre-Version 6.1.1.0 Introduced for E-Series