Applying A Route Map Entry To A Bgp Neighbor; Enabling Soft Reconfiguration; Prohibiting The Advertisement Of Default Routes - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring BGP
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If you are also using the route map to filter routes, you should delete the
communities in the route map entry that filters routes. This is because the
router stops processing a route map as soon as it finds a match. If you use a
separate, earlier entry to permit a route, the router will immediately add the
route to the BGP database without applying any policies that you have set in
later entries.

Applying a Route Map Entry to a BGP Neighbor

After you configure all route map entries, you must apply the map to a BGP
neighbor. Enter these commands, starting from the global configuration mode
context:
Syntax: router bgp <local AS>
Syntax: neighbor <neighbor ID>
Syntax: route-map <mapname> [in | out]
Use the in keyword to apply a route map to inbound data (for filtering external
routes and setting inbound policies). Use the out keyword to apply the route
map to outbound data (for advertising routes to the external neighbor and
setting outbound policies).

Enabling Soft Reconfiguration

Soft reconfiguration allows a network administrator to reconfigure BGP
policies without clearing active BGP sessions. Administrators can then insti-
tute new policies at any time without forcing the neighbors to reestablish their
connection and without disrupting traffic. The ProCurve Secure Router sup-
ports soft reconfiguration for inbound updates. You enable soft reconfigura-
tion on a per-neighbor basis. Enter:
ProCurve(config-bgp-neighbor)# soft-reconfiguration inbound
Soft reconfiguration is enabled by default.

Prohibiting the Advertisement of Default Routes

A router that runs BGP may have a default route in its routing table. Often a
BGP router is also part of an IGP network (for example, it is an OSPF ASBR),
and it is responsible for distributing a default route for all external traffic to
other routers in the AS. By default, the router is prohibited from transmitting
this route with this command:
Syntax: no default-originate
Currently, the no option is the only option available.