Configuring Route Related Attributes Of A Vpn Instance - 3Com MSR 50 Series Configuration Manual

1482 C 79: MPLS L3VPN C
HAPTER
n
Configuring Route
Related Attributes of a
VPN Instance
n
ONFIGURATION
To do...
Enter system view
Enter interface view
Associate the current
interface with the VPN
instance
When configured on an interface, the ip binding vpn-instance command clears
the IP address of the interface. Therefore, you must re-configure the IP address of
the interface after configuring the command.
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 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
A single vpn-target command can configure up to eight VPN targets. You can
■
configure up to 16 VPN targets for a VPN instance.
Use the command...
system-view
interface interface-type
interface-number
ip binding vpn-instance
vpn-instance-name
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
Remarks
-
-
Required
No VPN instance is associated
with an interface by default.
Remarks
-
Required
Required
Optional
By default, there is no limit to
the number of routes of a
VPN instance.
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.