9
Step Command
Remarks
7.
Enable the IS-IS process on
the interface.
isis enable
[
process-id
]
By default, IS-IS is disabled.
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:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view.
bgp as-number
N/A
3.
Enter BGP-VPN instance
view.
ip vpn-instance
vpn-instance-name
N/A
4.
Configure an EBGP peer.
peer
{
group-name
|
ip-address
[
mask-length
] }
as-number
as-number
By default, no BGP peer is
configured.
5.
Enter BGP-VPN IPv4
unicast address family
view.
address-family ipv4
[
unicast
]
N/A
6.
Enable BGP to exchange
IPv4 unicast routes with
the peer.
peer
{
group-name
|
ip-address
[
mask-length
] }
enable
By default, BGP does not
exchange IPv4 unicast routes
with any peer.
7.
Allow the local AS
number to appear in the
AS_PATH attribute of
routes received from the
peer, and set the
maximum number of
repetitions.
peer
{
group-name
|
ip-address
[
mask-length
] }
allow-as-loop
[
number
]
By default, BGP discards
incoming route updates that
contain the local AS number.
8.
Redistribute remote site
routes advertised by the
PE into BGP.
import-route
protocol
[ {
process-id
|
all-processes
} [
med
med-value
] ]
By default, no routes are
redistributed into BGP.
9.
(Optional.) Configure
filtering of advertised
routes.
filter-policy
acl-number
export
[
protocol process-id
]
By default, BGP does not
filter advertised routes.
10.
(Optional.) Configure
filtering of received
routes.
filter-policy
acl-number
import
By default, BGP does not
filter received routes.
2.
Configure a VPN site:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view.
bgp as-number
N/A
3.
Configure the MCE as an
EBGP peer.
peer
{
group-name
|
ip-address
[
mask-length
] }
as-number
as-number
N/A
