HP 7102dl - ProCurve Secure Router Configuration Manual page 798

IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring BGP
Parameter
the routers that send and
receive updates
information in updates
metric computation and
route selection
when routers send and
receive updates
15-72
configure policies to load balance:
• configure an interface as the source of external updates
• prepend private AS numbers to help balance inbound traffic
• set a multi-exit discriminator to help balance inbound traffic
enable inbound soft reconfiguration
set an administrative distance for routes discovered by BGP
alter BGP intervals
See Table 15-10 for a summary of configurable BGP parameters.
Table 15-10. BGP Protocol
BGP Specification
BGP routers communicate only with
manually configured neighbors.
• new route
• withdrawn routes
• filters screen which routes the router
advertises to a neighbor
• routes can include various attributes
such as:
– community
– autonomous systems through which
packets must pass
– metric for multi-exit discriminator
variety of policies:
• number of hops
• autonomous systems through which the
route passes
• weight
• inbound filters
• only to update routes
• can send keepalive messages
Configuration Considerations
• configuring the router ID (page 15-74)
• configuring a neighbor (page 15-75)
• setting the remote AS (page 15-75)
• advertising a network (page 15-73)
• setting the local AS (page 15-73 and page
15-75)
optional:
• configuring outbound prefix lists (page
15-81)
• configuring more complex policies for
which routes are advertised to a
neighbor (page 15-92)
• placing a route in a community (page
15-97)
• adding an AS path to a route (page 15-99)
• setting a multi-exit discriminator (page
15-100)
optional:
• configuring inbound prefix lists (page
15-81)
• setting local preferences according to
AS path or other attributes page 15-104
• setting administrative distance for BGP
routes (page 15-108)
optional:
• altering BGP intervals (page 15-108)