HP 10500 Series Configuration Manual page 17

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.
Configure the MCE:
1.
Step
1. Enter system view.
2. Enter BGP view.
3. Enter BGP-VPN instance view.
4. Specify an EBGP peer or peer
group.
5. Create and enter BGP-VPN
IPv4 address family view.
6. Enable exchange of IPv4
unicast routes with the
specified peer or peer group.
7. Allow routing loops: allow the
local AS number to appear in
the AS_PATH attribute of
routes received from the peer
or peer group and specify the
maximum appearance times.
8. Redistribute remote site routes
advertised by the PE.
9. (Optional.) Configure a
filtering policy to filter
advertised routes.
10. (Optional.) Configure a
filtering policy to filter
received routes.
Configure the VPN site:
2.
Step
1. Enter system view.
2. Enable BGP and enter BGP
view.
Command
system-view
bgp as-number
ip vpn-instance vpn-instance-name
peer { group-name | ip-address }
as-number as-number
ipv4-family [ unicast ]
peer { group-name | ip-address }
enable
peer { group-name | ip-address }
allow-as-loop [ number ]
import-route protocol [ { process-id
| all-processes } [ med med-value |
route-policy route-policy-name ] * ]
filter-policy { acl-number |
prefix-list ip-prefix-name } export
[ direct | isis process-id | ospf
process-id | rip process-id | static ]
filter-policy { acl-number |
prefix-list ip-prefix-name } import
Command
system-view
bgp as-number
11
Remarks
N/A
N/A
N/A
By default, no BGP peer or peer
group is specified.
N/A
BGP cannot exchange IPv4 unicast
routes with any peer or peer
group.
By default, the local AS number is
not allowed to appear in the
AS_PATH attribute of routes from a
peer or peer group.
BGP checks routing loops by
examining AS numbers. When
EBGP is used, the MCE advertises
routing information carrying the
local AS number to the site and
then receives routing updates from
the site. The routing updates carry
the AS number of the MCE, so the
MCE discards them to avoid
routing loops. To enable the MCE
to receive such routes, configure
the MCE to allow routing loops.
By default, BGP does not
redistribute routes from any other
routing protocol.
By default, BGP does not filter
advertised routes.
By default, BGP does not filter
received routes.
Remarks
N/A
By default, BGP is disabled.