Signal Flow And Timeslot Allocation; Figure 4-35 Signal Flow Of And Timeslot Allocation To Evplan Services (Ieee 802.1Ad Bridge) - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
Board Configuration Information
For the EVPLAN (IEEE 802.1ad bridge) services supported by Ethernet switching boards, refer
to Table
In this example, the convergence node NE1 is configured with an EFS8 board that supports the
IEEE 802.1ad bridge to implement EVPLAN services in which VoIP data is isolated from HSI
data.
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The access nodes NE2 and NE4 each are configured with an EGT1 board. The EPL services are
configured to implement transparent transmission from NE2 and NE4 to NE1.

4.10.2 Signal Flow and Timeslot Allocation

The services of user M and user N are transmitted from the access nodes NE2 and NE4
respectively to the convergence node NE1 through the Ethernet transparent transmission boards.
VoIP and HSI services carrying different C-VLAN IDs are tagged with different S-VLAN IDs.
The service data is isolated and exchanged at Layer 2 through S-VLAN filtering.
Figure 4-35
timeslot allocation to the EVPLAN services (IEEE 802.1ad bridge).
For the method of calculating the bandwidth of the Ethernet services carried by a VCTRUNK,
see 6.3 Ethernet Service Bandwidths Carried by VCTRUNKs of Ethernet

Figure 4-35 Signal flow of and timeslot allocation to EVPLAN services (IEEE 802.1ad bridge)

VoIP
Server
HSI
Server
Strip S-VLAN Label
C-VLAN(10)
C-VLAN(20)
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Issue 02 (2011-06-30)
6-1.
The VoIP services tagged with C-VLAN ID 10 from NE2 and NE4 are further tagged with
S-VLAN ID 100 when they arrive at the IEEE 802.1ad bridge of NE1. Then, the services
are forwarded to the VoIP server through Layer 2 switching.
The HSI services tagged with C-VLAN ID 20 from NE2 and NE4 are further tagged with
S-VLAN ID 200 when they arrive at the IEEE 802.1ad bridge of NE1. Then, the services
are forwarded to the HSI server through Layer 2 switching.
shows the signal flow of the EVPLAN services (IEEE 802.1ad bridge) and the
NE1:EFS8
SVLAN 100
PORT1
SVLAN 200
PORT2
VB1
PORT
Add S-VLAN Label
Data(VoIP) S-VLAN(100) C-VLAN(10)
Data(HSI) S-VLAN(200) C-VLAN(20)
The services of user M:
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
VCTRUNK1
VC4-4:VC12:1-30
VCTRUNK2
VC4-4:VC12:31-60
SDH
VCTRUNK
Strip S-VLAN Label
Data(VoIP) C-VLAN(10)
Data(HSI) C-VLAN(20)
4 Configuring Ethernet Services
Boards.
NE2:EGT1
PORT1
VCTRUNK1
VC4-4:VC12:1-30
NE4:EGT1
PORT1
VCTRUNK1
VC4-4:VC12:1-30
Data(VoIP)
Data(HSI)
User M
User N
4-117