from one PE to another PE. Configuration command is run on the PE to map the static LSP
to the CCC connection.
SVC VLL
The SVC implements VLL through static configuration. The SVC transfers L2VPN information
without using the signaling protocols. The VC label needs to be configured manually.
While creating the static L2VC connection of SVC, specify the tunnel type (LDP LSP or CR-
LSP) by configuring the tunnel policy.
The SVC supports inter-AS L2VPN in multi-hop mode. It does not support local connection.
NOTE
The incoming label of the CCC and receive label of the SVC all range from 16 to 1023. They are in the
same label space with those reserved for static LSPs. The outgoing label of CCC and the transmit label of
SVC, however, ranges from 0 to 1048575 because it is for intercommunication.
Martini VLL
The Martini mode implements the L2VPN by setting up a point-to-point link. It takes LDP as
the signaling protocol to transfer Layer 2 information and VC labels.
The Martini VLL adopts VC-type plus VC-ID to identify a VC between two CEs.
l VC-type: indicates the type of the VC, such as Ethernet and VLAN.
l VC-ID: A VC ID and a VC type uniquely identify a VC on a PE.
The PEs connecting two CEs exchange VC labels through LDP, and bind the corresponding CE
by VC-ID.
A VC is set up when all the following conditions are satisfied:
l The tunnel between the two PEs is successfully created.
l The label exchange and the binding with CE are completed.
l The state of the two interfaces of AC is Up.
In order to exchange VC labels between PEs, the Martini extends LDP by adding the FEC type
in the VC FEC. For remote connections, the two PEs that exchange the VC label cannot be
directly connected; therefore, the remote LDP session must be set up to convey the VC FEC and
the VC label.
Martini supports inter-AS L2VPN in multi-hop mode. However, it does not support local
connection.
Kompella VLL
The Kompella mode takes BGP as the signaling protocol to transfer Layer 2 information and
VC labels. It realizes the L2VPN by means of end-to-end (CE to CE) in the MPLS network.
The Kompella VLL is different from Martini. That is, it does not operate on the connection
between the CEs directly. It allocates different VPNs in the whole SP network and encodes each
CE in the VPN. Similar to BGP/MPLS VPN, the Kompella VLL uses VPN targets to identify
different VPNs that make the VPN networking more flexible.
To connect two CEs, you need to configure the local CE ID and remote CE ID on the PE.
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 5 VLL Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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