Kompella mpls l2vpn, Mpls l2vpn configuration task list, Configuring mpls l2vpn – H3C Technologies H3C S10500 Series Switches User Manual
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With Martini MPLS L2VPN, only PEs maintain a small amount of VC labels and LSP mappings, and no
P device contains Layer 2 VPN information. Therefore, it has high scalability. In addition, to add a new
VC, you only need to configure a one-way VC for each of the PEs. Your configuration will not affect the
operation of the network.
The Martini method applies to scenarios with sparse Layer 2 connections, such as a scenario with a star
topology.
Kompella MPLS L2VPN
Kompella MPLS L2VPN is different from Martini MPLS L2VPN in that it does not operate on the
connections between CEs directly. It organizes different VPNs in the whole service provider network and
encodes each CE in a VPN. For a connection to be established between two CEs, perform these tasks on
the PEs:
•
Configure CE IDs of the local and remote CEs, respectively.
•
Specify the circuit ID that the local CE assigns to the connection, such as the VPI/VCI with ATM.
Kompella MPLS L2VPN uses extended BGP as the signaling protocol to distribute VC labels. Its label
block mode allows it to assign labels to multiple connections at a time.
With Kompella MPLS L2VPN, you can specify the CE range of a VPN to indicate how many CEs can be
connected to the VPN. Then, the system assigns a label block of a size equal to the CE range for the CE.
In this way, you can reserve some labels for the VPN for future use. This wastes some label resources in
a short term, but can reduce the VPN deployment and configuration workload in the case of expansion.
Assume that an enterprise VPN contains 10 CEs and the number may increase to 20 in future service
expansion. In this case, set the CE range of each CE to 20. When you add a CE to the VPN later, you
only need to modify the configurations of the PE to which the new CE is connected. No change is
required for the other PEs, which simplifies VPN expansion.
Similar to MPLS L3VPN, Kompella MPLS L2VPN also uses VPN targets to identify VPNs, which brings
excellent VPN networking flexibility.
MPLS L2VPN configuration task list
Complete the following tasks to configure MPLS L2VPN:
Task Remarks
Required
Configuring a PE-CE interface of a PE
Required
Configuring Martini MPLS L2VPN
Configuring Kompella MPLS L2VPN
Use one of the approaches according to the MPLS
L2VPN implementation method
Optional
Configuring MPLS L2VPN
Select any of the implementation methods for MPLS L2VPN as needed. However, no matter what method
you select, you must complete the following tasks: