HP 12500 Series Configuration Manual page 350

The VPN instance determines which routes it can accept and redistribute according to the
•
import-extcommunity in the VPN target.
The VPN instance determines how to change the VPN targets attributes for routes to be advertised
•
according to the export-extcommunity in the VPN target.
When you configure route related attributes for a VPN instance, follow these guidelines:
Route related attributes configured in VPN instance view are applicable to both IPv4 VPNs and IPv6
•
VPNs.
You can configure route related attributes for IPv6 VPNs in both VPN instance view and IPv6 VPN
•
view. Those configured in IPv6 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.
Create a routing policy before associating it with a VPN instance. Otherwise, the switch cannot
•
filter the routes to be received and advertised.
To configure route related attributes for a VPN instance:
To do...
Enter system view
Enter VPN instance view
Enter IPv6 VPN view
Configure VPN targets
Set the maximum number of routes
supported
Apply an import routing policy
Apply an export routing policy
Configuring a tunneling policy for a VPN instance
When multiple tunnels exist in an MPLS L3VPN network, you can configure a tunneling policy to specify
the type and number of tunnels to be used by using the tunnel select-seq command or the preferred-path
command.
With the tunnel select-seq command, you can specify the tunnel selection preference order and the
number of tunnels for load balancing.
With the preferred-path command, you can configure preferred tunnels that each correspond to a tunnel
interface.
After a tunneling policy is applied on a PE, the PE selects tunnels in this order:
Use the command...
system-view
ip vpn-instance vpn-instance-name
ipv6-family
vpn-target vpn-target&<1-8>
[ both | export-extcommunity |
import-extcommunity ]
routing-table limit number
{ warn-threshold | simply-alert }
import route-policy route-policy
export route-policy route-policy
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Remarks
—
—
Optional
Required
Optional
Optional
By default, all routes matching the
import target attribute are
accepted.
Optional
By default, routes to be advertised
are not filtered.