Configuration Procedure - HP HPE FlexNetwork MSR Router Series Configuration Manual

Figure 45 MPLS VPN tunnel selection diagram
As shown in
multiple MPLS VPNs. You can control the paths for VPN traffic by using one of the following
methods:
•
Configure multiple tunnel policies, and specify a preferred tunnel for each policy by using the
preferred-path command. Apply these policies to different MPLS VPNs to forward the traffic of
each VPN over a specific tunnel.
•
Configure one tunnel policy, and use the select-seq load-balance-number command to
specify the tunnel selection order and the number of tunnels for load balancing. Apply the tunnel
policy to MPLS VPNs to forward the traffic of every VPN over multiple tunnels.
The second method distributes traffic of a single VPN to multiple tunnels. The transmission delays on
different tunnels can greatly vary. Therefore, the destination device or the upper layer application
might take a great time to sequence the packets. As a best practice, do not use the second method.

Configuration procedure

To configure a tunnel policy:
Step
1. Enter system view.
2. Create a tunnel policy,
and enter tunnel policy
view.
3. Configure tunnel
selection methods.
NOTE:
For a VPN to exclusively use a tunnel, you can specify the tunnel as the preferred tunnel in a tunnel
policy, and apply the policy only to that VPN.
Figure 45, PE 1 and PE 2 have multiple tunnels in between and they are connected to
Command
system-view
tunnel-policy tunnel-policy-name
•
(Method 1) Specify a preferred
tunnel:
preferred-path { tunnel number |
tunnel-bundle number }
•
(Method 2) Configure the tunnel
selection order and the number of
tunnels for load balancing:
select-seq { cr-lsp | gre | lsp } *
load-balance-number number
183
Remarks
N/A
By default, no tunnel policy is
configured.
Configure one or both methods.
By default, no preferred tunnel is
specified.
By default, only one tunnel is
selected in LSP—GRE—CRLSP
order.