442
Step Command
Remarks
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
|
route-policy
route-policy-name
] * ]
By default, no routes are
redistributed into BGP.
9.
(Optional.) Configure
filtering of advertised
routes.
filter-policy
{
acl-number
|
prefix-list
prefix-list-name
}
export
[
protocol
process-id
]
By default, BGP does not filter
advertised routes.
10.
(Optional.) Configure
filtering of received routes.
filter-policy
{
acl-number
|
prefix-list
prefix-list-name
}
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
4.
Enter BGP-VPN IPv4 unicast
address family view.
address-family ipv4
[
unicast
]
N/A
5.
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.
6.
Redistribute the IGP routes
of the VPN into BGP.
import-route
protocol
[ {
process-id
|
all-processes
}
[
med
med-value
|
route-policy
route-policy-name
] * ]
By default, no routes are
redistributed into BGP.
A VPN site must advertise the
VPN network addresses it can
reach to the connected MCE.
Configuring IBGP between MCE and VPN site
To run IBGP 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.
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
