H3C Technologies H3C S10500 Series Switches - Manual (Page 46)

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To do… Use the command… Remarks
Associate a VPN instance with the
interface ip binding vpn-instance
vpn-instance-name
Required
No VPN instance is associated
with an interface by default.
NOTE:
The ip binding vpn-instance command clears the IPv6 address of the interface on which it is configured.
Be sure to re-configure an IPv6 address for the interface after configuring the command.
Configuring route related attributes for a VPN instance
The control process of VPN route advertisement is as follows:
• When a VPN route learned from a CE 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 CE.
• 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.
Follow these steps to configure route related attributes for a VPN instance:
To do… Use the command… Remarks
Enter system view system-view —
Enter VPN instance view ip vpn-instance vpn-instance-name —
Enter IPv6 VPN view ipv6-family Optional
Configure VPN targets
vpn-target vpn-target&<1-8>
[ both | export-extcommunity |
import-extcommunity ]
Required
Set the maximum number of routes
supported
routing-table limit number
{ warn-threshold | simply-alert }
Optional
Apply an import routing policy import route-policy route-policy
Optional
By default, all routes matching the
import target attribute are
accepted.
Apply an export routing policy export route-policy route-policy
Optional
By default, routes to be advertised
are not filtered.