Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manual de usuario descargar pdf (Pagina 251)

Routing Policies

308628-14.00 Rev 00

B-17

Parameter: AS Pattern

Path: Configuration Manager > Protocols > IP > Policy Filters > BGP-4 > Accept

Policies

Default: Empty string

Options: Any regular expression or empty string

Function: Allows AS_PATH pattern matching

Instructions: Enter a valid regular expression to indicate an AS and its position in a path.

The policy applies to all routes whose AS path includes the AS in that position.

For example, the expression * 200 $ means that the policy applies to all routes

whose AS_PATH attribute contains AS 200 as the last AS in the path.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.6.9.1.19

Parameter: BGP Communities to Match

Path: Configuration Manager > Protocols > IP > Policy Filters > BGP-4 > Accept

Policies

Default: An empty list

Options: A list of BGP communities

Function: Specifies one or more BGP communities. This policy applies to all BGP

advertisements that match the list.

Instructions: Supply an octet string using the following format: each community ID is 4 bytes

long; 0 in the two most significant bits causes the router to perform the match on

the lower 16 bits; the default empty list means “match any list.”

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.6.9.1.20

Parameter: AS Prepend

Path: Configuration Manager > Protocols > IP > Policy Filters > BGP-4 > Accept

Policies

Default: An empty list

Options: A list of autonomous systems

Function: Specifies one or more AS numbers to be added as a SEQUENCE to AS Path.

Instructions: Supply an octet string containing AS numbers to be added as a SEQUENCE to

AS Path.

MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.6.9.1.23

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Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manual de usuario Pagina 251