Configuration Procedure - HP 6127xlg Configuration Manual

Figure 39 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. HP recommends not using 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 39, 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
•
(Method 2) Configure the tunnel
selection order and the number of
tunnels for load balancing:
select-seq { cr-lsp | lsp } *
load-balance-number number
156
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—CRLSP order.