H3C S6800 Series Configuration Manual page 16

Step
7. (Optional.) Configure OSPF
to redistribute the default
route.
8. Create an OSPF area and
enter OSPF area view.
9. Enable OSPF on the interface
attached to the specified
network in the area.
Configuring EBGP between an MCE and a VPN site
To run EBGP between an MCE and a VPN site, you must configure a BGP peer for each VPN instance
on the MCE, and redistribute the IGP routes of each VPN instance on the VPN site.
You can configure filtering policies to filter received routes and advertised routes.
1. Configure the MCE:
Routes redistributed from OSPF to BGP have their OSPF attributes removed. To enable BGP to
distinguish routes redistributed from different OSPF domains, you must enable the redistributed
routes to carry the OSPF domain ID by configuring the domain-id command in OSPF view. The
domain ID is added to BGP VPN routes as an extended community attribute.
To configure the MCE:
Step
1. Enter system view.
2. Enter BGP view.
3. Enter BGP-VPN instance
view.
4. Configure an EBGP peer.
5. Enter BGP-VPN IPv4
unicast address family
view.
6. Enable BGP to exchange
IPv4 unicast routes with the
peer.
Command
default-route-advertise summary
cost cost
area area-id
network ip-address wildcard-mask
Command
system-view
bgp as-number
ip vpn-instance vpn-instance-name
peer { group-name | ip-address }
as-number as-number
address-family ipv4 [ unicast ]
peer { group-name | ip-address }
enable
9
Remarks
By default, OSPF does not
redistribute the default route.
This command redistributes the
default route in a Type-3 LSA. The
MCE advertises the default route to
the site.
By default, no OSPF area is
created.
By default, an interface neither
belongs to any area nor runs
OSPF.
Remarks
N/A
N/A
N/A
By default, no BGP peer is
configured.
N/A
By default, BGP does not
exchange IPv4 unicast routes
with any peer.