Protocols And Standards - HP FlexNetwork HSR6600 Configuration Manual

for VPN 1 connected to CE 2), PE 1 uses the VPNv4 route as the primary link, and the IPv4 route as
the backup link.
Figure 70 Network diagram
VPN 1
Configure BFD for LSPs or MPLS TE tunnels on PE 1 to detect the connectivity of the public tunnel
from PE 1 to PE 2. When the tunnel operates correctly, traffic from CE 1 to CE 2 goes through the
path CE 1—PE 1—PE 2—CE 2. When the tunnel fails, the traffic goes through the path CE 1—PE
1—CE 2.
In this scenario, PE 1 is responsible for primary link detection and traffic switchover.

Protocols and standards

•
RFC 3107, Carrying Label Information in BGP-4
•
RFC 4360, BGP Extended Communities Attribute
•
RFC 4364, BGP/MPLS IP Virtual Private Networks (VPNs)
•
RFC 4577, OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private
Networks (VPNs)
MPLS L3VPN configuration task list
Tasks at a glance
(Required.)
(Optional.) Configuring inter-AS VPN
(Optional.) Configuring nested VPN
(Optional.) Configuring multirole host
(Optional.) Configuring HoVPN
(Optional.) Configuring an OSPF sham link
(Optional.) Specifying the VPN label processing mode on the egress PE
(Optional.) Configuring BGP AS number substitution and SoO attribute
(Optional.) Configuring MPLS L3VPN FRR
(Optional.) Configuring the LPU load sharing mode
(Optional.) Configuring route replication
MPLS
backbone
CE 1
Configuring basic MPLS L3VPN
PE 1
CE 2
PE 2
215
VPN 1
Primary link
Backup link