225
•
Configurations between provider CE and provider PE
—Configure VPN instances and
enable nested VPN on the provider PE and configure BGP VPNv4 route exchange between the
provider CE and provider PE.
•
Configurations between provider PEs
—Configure BGP VPNv4 route exchange between
them.
Nested VPN allows a customer PE to directly exchange VPNv4 routes with a provider PE, without
needing to deploy a provider CE. In this case, the customer PE also acts as the provider CE.
Therefore, you must configure provider CE settings on it.
Configurations on the customer CE, customer PE, and provider CE are similar to basic MPLS
L3VPN configurations. This task describes the configurations on the provider PE.
When you configure nested VPN, follow these guidelines:
•
The address spaces of sub-VPNs of a VPN cannot overlap.
•
Do not assign nested VPN peers addresses that public network peers use.
•
Nested VPN does not support multihop EBGP. A provider PE and a provider CE must use the
addresses of the directly connected interfaces to establish a neighbor relationship.
To configure nested VPN:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view.
bgp
as-number
N/A
3.
Enter BGP VPNv4 address
family view.
address-family vpnv4
N/A
4.
Enable nested VPN.
nesting-vpn
By default, nested VPN is
disabled.
5.
Return to BGP view.
quit
N/A
6.
Enter BGP-VPN instance
view.
ip vpn-instance
vpn-instance-name
N/A
7.
Specify the peer CE or the
peer group of the peer CE.
peer
{
group-name
|
peer-address
[
mask-length
] }
as-number
as-number
By default, no peer is specified.
8.
Create the BGP-VPN VPNv4
address family and enter its
view.
address-family vpnv4
By default, the BGP-VPN VPNv4
address family is not created.
9.
Enable BGP VPNv4 route
exchange with the peer CE
or the peer group of the peer
CE.
peer
{
group-name
|
peer-address
[
mask-length
] }
enable
By default, BGP does not
exchange VPNv4 routes with any
peer.
10.
(Optional.) Configure the
SoO attribute for the BGP
peer or peer group.
peer
{
group-name
|
ip-address
[
mask-length
] }
soo
site-of-origin
By default, the SoO attribute is not
configured.
Configuring multirole host
To configure the multirole host feature, perform the following tasks on the PE connected to the CE in
the site where the multirole host resides:
•
Configure and apply PBR.
•
Configure static routes.
Содержание HPE FlexNetwork MSR Router Series
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