3Com Switch 8800 Family Configuration Guide

Configuring BGP 373
Configuring Network
Routes for BGP
Distribution
Perform the following configuration in BGP view.
By default, no network route is configured for BGP distribution.
Configuring the
Interaction between
BGP and IGP (Importing
IGP Routes)
BGP can transmit the internal network information of local AS to other AS. To
reach such objective, the network information about the internal system learned
by the local router via IGP routing protocol can be transmitted.
Perform the following configuration in BGP view.
The protocol argument specifies the imported source route protocols. The
specified and imported source route protocols can be direct, static, rip, isis, ospf,
ospf-ase, and ospf-nssa.
By default, BGP does not import the route information of other protocols.
Note that when BGP imports other routes, the default routes of other protocols
are not imported.
After you configure the import-route command in a BGP view, you cannot
import the default route of the imported source route protocols to BGP by default.
Configuring to Permit
BGP to Import Default
Routes of Other
Protocols
Perform the following configuration in BGP view.
By default, BGP does not import the default routes of other protocols when BGP is
importing the routes of other protocols.
Configuring BGP Route
Aggregation
The BGP supports two forms of route aggregation:
Tab le 369 Configure network routes for BGP distribution
Operation Command
Configure the local network route for BGP
distribution
network ip-address address-mask [
route-policy policy-name ]
Remove the local network route for BGP
distribution
undo network ip-address address-mask [
route-policy policy-name ]
Tab le 370 Import IGP routing information
Operation Command
Configure BGP to import routes of IGP
protocol
import-route protocol [ med med-value ] [
route-policy route-policy-name ]
Configure BGP not to import routes of IGP
protocol
undo import-route protocol
Tab le 371 Configure to permit BGP to import default routes of other protocols
Operation Command
Configure to permit BGP to import routes of
other protocols
default-route imported
Configure to permit BGP to filter the default
routes of a protocol when this protocol is
imported
undo default-route imported