Huawei OSN 3500 Technical Manual page 37

Networking
4-4
Company A
VLAN 1 VLAN 2
Lanswitch
NE1
Port 1
Port 2
Lanswitch
Company B
VLAN 1
VLAN 2
Figure 4-4 Port and VLAN-based flow classification and convergence (in a chain)
3. Transparent transmission of the point-to-point Ethernet service in the
ring
In the ring networking application, as the Ethernet service is provided with a perfect
SDH self-healing ring (SHR) protection scheme, its reliable transmission is
guaranteed. As shown in Figure 4-5, the Ethernet services of different nodes are
transmitted to the destination node through their respective VC-Trunks.
NE 1
n VC Trunk
Figure 4-5 Point-to-point transparent transmission of Ethernet service (in a ring)
4. VLAN convergence of Ethernet service in the ring
The Ethernet service accessed at different nodes can be converged to one node and
sent to a certain port for transmission as required. As shown in Figure 4-6, flow
classification is performed to the Ethernet service according to the port and VLAN ID
to distinguish different VLANs that Company A and B belong to respectively. Up to
VC-Trunk 1
NE2
Port 1
VC-Trunk 2
VLAN 1
NE 4
1
4
SHR
NE 3
5
2
3
NE 2
OptiX OSN 3500 TM - SD
VLAN 1
NE3
Port 1
VLAN 2
Port 2
Port 3
VLAN 2