H3C S5800 Series Configuration Manual page 408

When a VPN route learned from a site gets redistributed into BGP, BGP associates it with a VPN
target extended community attribute list, which is usually the export target attribute of the VPN
instance associated with the site.
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
redistributed according to the export-extcommunity in the VPN target.
Follow these steps to configure route related attributes of a VPN instance:
To do...
Enter system view
Enter VPN instance view
Associate the current VPN
instance with one or more VPN
targets
Configure the maximum number of
routes for the VPN instance
Apply an import routing policy to
the current VPN instance
Apply an export routing policy to
the current VPN instance
Use the command...
system-view
ip vpn-instance
vpn-instance-name
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
14-11
Remarks
—
Required
Required
Optional
Not configured by default
Optional
By default, all routes permitted by
the import target attribute can be
redistributed into the VPN
instance.
Optional
By default, all VPN instance routes
permitted by the export target
attribute can be redistributed.