H3C Technologies H3C S10500 Series Switches - Manual (Page 256)

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NOTE:
•
Route related attributes configured in VPN instance view are applicable to both IPv4 VPNs and IPv6
VPNs.
• You can configure route related attributes for IPv4 VPNs in both VPN instance view and IPv4 VPN view.
Those configured in IPv4 VPN view take precedence.
• A single vpn-target command can configure up to eight VPN targets. You can configure up to 64 VPN
targets for a VPN instance.
• You can define the maximum number of routes for a VPN instance to support, preventing too many
routes from being redistributed into the PE. The maximum number of routes that a PE supports varies by
device model.
• Create a routing policy before associating it with a VPN instance. Otherwise, the device cannot filter the
routes to be received and advertised.
Configuring a tunneling policy for a VPN instance
Follow these steps to configure a tunneling policy for a VPN instance:
To do… Use the command… Remarks
Enter system view system-view —
Create a tunneling policy and
enter tunneling policy view
tunnel-policy tunnel-policy-name Required
Specify the tunnel selection
preference order and the number
of tunnels for load balancing
tunnel select-seq { cr-lsp | lsp } *
load-balance-number number
Required
By default, only one tunnel is
selected (no load balancing) in this
order: LSP tunnel, CR-LSP tunnel.
Return to system view quit —
Enter VPN instance view ip vpn-instance vpn-instance-name Required
Enter IPv4 VPN view ipv4-family Optional
Apply the tunnel policy to the VPN
instance
tnl-policy tunnel-policy-name
Required
By default, only one tunnel is
selected (no load balancing) in this
order: LSP tunnel, CR-LSP tunnel.
NOTE:
•
When you configure the tunnel selection preference order by using the tunnel select-seq command, a
tunnel type closer to the select-seq keyword has a higher priority. For example, with the tunnel
select-seq lsp cr-lsp load-balance-number 1 command configured, VPN uses a CR-LSP tunnel when
no LSP exists. After an LSP is created, the VPN uses the LSP tunnel instead.
• If you specify more than one tunnel type and the number of tunnels of a type is less than the specified
number of tunnels for load balancing, tunnels of different types may be used.
• A tunneling policy configured in VPN instance view is applicable to both IPv4 VPNs and IPv6 VPNs.
• You can configure a tunneling policy for IPv4 VPNs in both VPN instance view and IPv4 VPN view. A
tunneling policy configured in IPv4 VPN view takes precedence.
• Create a tunneling policy before associating it with a VPN instance. Otherwise, the default tunneling
policy is used. The default tunneling policy selects only one tunnel (no load balancing) in this order: LSP
tunnel, CR-LSP tunnel.