H3C S6800 Series Configuration Manual page 20

Step
3. Disable routing loop
detection.
4. (Optional.) Configure the
OSPF domain ID.
(Optional.) Configure the type
5.
codes of OSPF extended
community attributes.
6. (Optional.) Configure the
external route tag for
imported VPN routes.
7. Redistribute the VPN routes.
8. (Optional.) Configure OSPF
to redistribute the default
route.
9. (Optional.) Configure filtering
of advertised routes.
10. (Optional.) Configure the
default parameters for
redistributed routes (cost,
route number, tag, and type).
11. Create an OSPF area and
enter OSPF area view.
Command
vpn-instance-capability simple
domain-id domain-id [ secondary ]
ext-community-type { domain-id
type-code1 | router-id type-code2
| route-type type-code3 }
route-tag tag-value
import-route protocol [ process-id
| all-processes | allow-ibgp ]
[ allow-direct | cost cost |
route-policy route-policy-name |
tag tag | type type ] *
default-route-advertise summary
cost cost
filter-policy { acl-number |
prefix-list prefix-list-name } export
[ protocol [ process-id ] ]
default { cost cost | tag tag | type
type } *
area area-id
13
Remarks
By default, routing loop detection
is enabled.
You must disable routing loop
detection for a VPN OSPF process
on the MCE. Otherwise, the MCE
cannot receive OSPF routes from
the PE.
The default domain ID is 0.
The defaults are as follows:
•
0x0005 for Domain ID.
•
0x0107 for Router ID.
•
0x0306 for Route Type.
By default, no route tag is
configured.
In some networks, a VPN might be
connected to multiple MCEs.
When one MCE advertises the
routes learned from BGP to the
VPN, the other MCEs might learn
the routes, resulting in routing
loops. To avoid such routing loops,
you can configure route tags for
VPN instances on an MCE. HP
recommends that you configure the
same route tag for the same VPN
on the MCEs.
By default, no routes are
redistributed into OSPF.
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 PE.
By default, redistributed routes are
not filtered.
The default cost is 1, the default tag
is 1, and default type of
redistributed routes is Type-2.
By default, no OSPF area is
created.