Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Instrukcja Użytkownika Pobierz pdf (Strona 132)

Configuring IP Exterior Gateway Protocols (BGP and EGP)

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308628-15.0 Rev 00

Supplying Modification Values for a BGP Announce Policy

You can use the BCC or Site Manager to supply values that BGP uses to modify

fields in an update that matches the policy.

Using the BCC

To supply override values for routes that match a BGP announce policy, go to the

announce policy prompt (for example,

box; ip; /jointfilesconvert/97454/bgp; announce policy_1

) and

enter:

modify

For example, the following command invokes the modification prompt for BGP

announce policy pol_1:

announce/pol_1//jointfilesconvert/97454/bgp#

modify

modify//jointfilesconvert/97454/bgp/announce/pol_1#

To supply an override value, enter:

Table 5-6 lists the parameters and values that you can enter.

Table 5-6. BCC Modification Parameters for BGP Announce Policies

Parameter Values Function

as-path null (default) or an

AS path

Specifies an AS path that overrides the

AS-path attribute of a route matching this

policy. An AS path is composed of AS path

segments. Each path segment includes a

path segment type, a path segment length

specifying the number of ASs in the

segment, and a path segment value

containing one or more AS numbers. There

are two AS path segment types: type 1, an

unordered set of ASs that a route in the

update message has traversed; and type 2,

an ordered set of ASs that a route in the

update message has traversed.

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Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Instrukcja Użytkownika Strona 132