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8: MPLS B
ASIC
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ONFIGURATION
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OMMANDS
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domain-id
Syntax
domain-id { id-number | id-addr }
undo domain-id
View
OSPF protocol view
Parameter
id-number: Domain ID for a VPN instance, in range of 0~4294967295. By default,
it is 0.
id-addr: IP address format of the domain ID in VPN instance. By default, it is
0.0.0.0.
Description
Using the domain-id command, you can specify domain ID for a VPN instance.
Using the undo domain-id command, you can restore the default domain ID.
For standard BGP/OSPF interoperability, when importing routes to OSPF are
configured at the PE, their original OSPF attributes cannot be restored. If these
BGP VPN IP routes are issued to CE as ASE LSA (type-5 LAS), they cannot be
distinguished from other routes imported from other route domains. In order to
distinguish external routes imported form OSPF internal routes, it is required to
restore their OSPF attributes in importing BGP routes to OSPF, so an OSPF domain
can be configured with a domain ID. The domain-id is attached to the
corresponding BGP/VPN route in importing OSPF route into BGP/VPN for
transmission over BGP/VPN route. Then in importing BGP route into the peer PE,
LAS values are filled in according to the extended community attributes. If the
domain IDs are the same for the BGP VPN IP routes received, they are from the
same VPN instance.
By default, the domain ID is 0.
The specified domain ID will not take effect until the reset ospf command is
executed.
Example
Configure domain ID 100 for OSPF procedure 100.
[3Com-ospf-100]domain-id 100
[3Com-ospf-100]domain-id 0.0.0.100
import-route
Syntax
import-route { ospf | ospf-ase | ospf-nssa } [ process-id ] [ med value | route-policy
route-policyname ]
undo import-route { ospf | ospf-ase | ospf-nssa } [ process-id ]
Содержание Router 3031
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