Alcatel-Lucent OmniAccess 700, Руководство по настройке CLI

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Protocol Independent Features
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Chapter name (automatic)
448
Beta Beta
CLI Configuration Guide
Alcatel-Lucent
C
ONFIGURE
P
REFIX
-
LIST
IP Prefix-list provides prefix based filtering mechanism. In addition to the access-
list functionality, IP Prefix-list has prefix length range specification and sequential
number specification. You can add or delete prefix based filters to arbitrary points
of prefix-list using sequential number specification.
E
XAMPLE
In the following example, permit updates for any network with a prefix mask length
less than or equal to 23. Denies all network updates with a network mask length
greater than 23.
ALU(config)# ip prefix-list test permit 0.0.0.0/0 le 23
Note: Less than or equal to prefix numbers and greater than or equal to prefix numbers can
be used together. The order of the le and ge commands does not matter.
C
ONFIGURE
AS-
PATH
A
CCESS
-
LIST
A regular expression is a pattern used to match against an input string. In case of
BGP, we can have a regular expression to match particular autonomous system
path. This is used to filter updates from neighbors.
E
XAMPLE
In the following example, the IP as-path access-list commands create an as-path
access list named '1' to deny only those routes that include paths from or through
autonomous systems 100:
ALU(config)# ip as-path access-list 1 deny _100_
Command (in CM) Description
ip prefix-list < name > [ seq < 1-
4294967294 >] {{ deny | permit }
< ip-address/prefix-length>
{ ge | le } < 0-32 >| description
< line >}
This command is used to configure a
Prefix-list.
Command (in CM) Description
ip as-path access-list < 1-199 >
{ deny | permit } < regular-
expression >
This command is used to configure AS-
path Access-list.