Protection; Figure 6-5 Application Of Evplan Service - Huawei OptiX OSN 7500 Technical Manual

OptiX OSN 7500
Technical Manual - System Description

Figure 6-5 Application of EVPLAN service

6.1.3 Protection

The Ethernet service of the OptiX OSN equipment takes the protection of several
levels, including:
1.
LCAS provides an error tolerance mechanism, enhancing the reliability of
concatenation. It has the following functions:
As shown in Figure 6-6, LCAS can add or delete members to increase or decrease
the bandwidth dynamically without affecting the service.
MPLS
Core
P
Address =
MAC A
PE
Branch A
LSP1
Sink Tunnel Label VC Label
Source
1 10
MAC A
MAC H
2 20
MAC H MAC B
3 30
MAC H MAC C
Protection of the spanning tree, LCAS and flow control
Protection of optical transmission layer, such as MSP and SNCP
LCAS
Configure the system capacity, add or reduce the number of VC involved in the
concatenation and change the service bandwidth dynamically without damaging
the service.
Protect and recover failed members.
Huawei Technologies Proprietary
Address =
PE
MAC C
Branch C
P
Address =
MAC B
PE
LSP3
LSP2
Transferd to
PE corresponding
port via the Layer
2 route table
Address =
MAC H
LSP
LSP1
LSP2
Headquarters
LSP3
6-7
6 Data Features
Branch B