Avocent Access Router Cyclades-PR2000 User Manual

Page 83

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Cyclades-PR2000

Chapter 9 - Routing Protocols

83

CONFIG=>IP=>BGP4=>ACCESS LIST=>CONFIGURE RULES=><ACCESS LIST NAME>

=>ADD

Parameter

Description

Rule Status

Enables the rule.

Scope

See explanation of this parameter in step 3.

Rule AS Position

Applies only for

Access List Type equal to AS Path. Limits the search on AS number to

a particular position in the route. For the example in Figure 12.5, Any would be the
correct choice because AS 5 will appear in the middle or the beginning of the route.

Rule AS Number

Applies only for Access List Type equal to AS Path. Applies the rule to routes
containing this AS number, with the restriction given in the preceding parameter.

Rule Distr. Search
Type

Applies only for Access List Type equal to Dist BGP. Exact filters rules that match the
IP Address/Mask pair exactly.

Refine matches more specific routes.

Rule Distr. Address

Applies only for

Access List Type equal to Dist BGP. Applies the rule to routes with

this IP number and the mask defined in the next parameter.

Rule Distr. Mask
Bitlen

Applies only for

Access List Type equal to Dist BGP. The shortened mask that is used

with the IP address defined in the previous parameter.

Community

Applies only for

Access List Type equal to Community BGP. Applies this rule to the

community number entered or to well-known communities defined in RFC 1997, BGP
Communities.

STEP FIVE
Each access list can be applied to more than one interface. The access list parameters in the Neighbor Menu for
the appropriate neighbor should be set now, since the access lists did not exist during step two.

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