OptiX OSN 7500
Technical Manual - System Description 6 Data Features
Huawei Technologies Proprietary
6-5
Corp A
Company B Company B
NE1 NE4NE2 NE3
Port A
Port B
Port A
Port B
Tunnel Label VC Label DataCompany
60 10 ...A
70 20 ...B
... ... ......
60 10 Data
70 20 Data
61 10 Data
71 20 Data
10 Data
20 Data
Tunnel label
switching
Tunnel label
switching
Tunnel label
switching
NE4 strips the MPLS lables
and Transfers the frame to
corresponding ports
L2 MPLS network composed
by OptiX OSN Products
Company ACompany A
62
72
Figure 6-3 The EVPL service with MPLS label
4. EPLAN Service
The OptiX OSN 7500 supports Layer 2 switching of Ethernet data, i.e. the EPLAN
service, which can be transferred according to their destination media access control
(MAC) addresses.
As shown in Figure 6-4, respective LANs of Company A and B are connected to four
NEs. The Ethernet service between the NEs is not of a fixed point-to-point type. For
example, a user of Company A connecting to NE3 may want to communicate with
users of Company A connecting to other three NEs. That is, the flow direction of
services is not definite. The Ethernet Layer 2 switching function provided by the OptiX
OSN 7500 can be employed to solve such a problem. For example, an Ethernet MAC
address transfer table will be formed in the system when the relevant settings are
made to NE3. The system can learn to periodically update the table. Then, the data of
Company A and B accessed at NE3 will be transmitted to their destinations over
different VCTRUNKs selected according to their MAC transfer table or over the same
VCTRUNK.
In this way, the system configuration is significantly simplified and the bandwidth utility
is improved. In addition, the corresponding maintenance and management becomes
convenient for the operator.
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