Kompella mpls l2vpn, Mpls l2vpn configuration task list – H3C Technologies H3C S7500E Series Switches User Manual
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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, you only need
to perform these tasks on the PEs:
z
Configuring CE IDs of the local and remote CEs respectively
z
Specifying 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.
Imagine that an enterprise VPN contains 10 CEs and the number may increase to 20 in future service
expansion. In this case, you can set the CE range of each CE to 20. Thus, when you need to 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. This makes VPN expansion extremely simple.
Similar to MPLS L3VPN, Kompella MPLS L2VPN also uses VPN targets to identify VPNs. This brings
excellent VPN networking flexibility.
In addition, Kompella supports local connections.
MPLS L2VPN Configuration Task List
Complete the following tasks to configure MPLS L2VPN:
Task
Remarks
Required
Configuring a PE Interface Connecting a CE
Required
Configuring Martini MPLS L2VPN
Configuring Kompella MPLS L2VPN
Required
Use one of the approaches according to the MPLS
L2VPN implementation method