Signal Flow And Timeslot Allocation; Figure 4-25 Signal Flow And Timeslot Allocation (Ethernet Switching Board); Table 4-14 Parameters Of External Ports On The Ethernet Boards - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
Board Configuration Information
Ethernet transparent transmission boards or Ethernet switching boards can be used to configure
EPL services. The Ethernet switching processing board is displayed as the EFS8 on the
U2000, which occupies logical slot 4.
In this example, NE1 and NE3 each are configured with one EFS8 board, which is an Ethernet
switching board.

4.5.2 Signal Flow and Timeslot Allocation

Ethernet services are received from an external port, encapsulated through an internal port, and
mapped to the SDH network for transparent transmission. In this way, the node communicates
with a remote node.
Figure 4-25
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 4-25 Signal flow and timeslot allocation (Ethernet switching board)

User A1
User B1
l
l

Table 4-14 Parameters of external ports on the Ethernet boards

Parameter
Board
Port
Issue 02 (2011-06-30)
shows the signal flow and timeslot allocation of the EPL services.
NE1 :EFS8
PORT1
VCTRUNK1
VC4-4:VC12:1-5
PORT2
VCTRUNK2
VC4-4:VC12:6-15
The EPL services of user A:
– Occupy the first to fifth VC-12 timeslots of the first VC-4 (VC4-1:VC12:1-5) on the
SDH link between NE1 and NE3 and pass through NE2.
– Are added and dropped by using the first to fifth VC-12 timeslots of the fourth VC-4
(VC4-4:VC12:1-5) on the EFS8 board of NE1 and the first to fifth VC-12 timeslots of
the fourth VC-4 (VC4-4:VC12:1-5) on the EFS8 board of NE3.
The EPL services of user B:
– Occupy the sixth to fifteenth VC-12 timeslots of the first VC-4 (VC4-1:VC12:6-15) on
the SDH link between NE1 and NE3 and pass through NE2.
– Are added and dropped by using the sixth to fifteenth VC-12 timeslots of the fourth
VC-4 (VC4-4:VC12:6-15) on the EFS8 board of NE1 and the sixth to fifteenth VC-12
timeslots of the fourth VC-4 (VC4-4:VC12:6-15) on the EFS8 board of NE3.
NE1
EFS8
PORT1
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NE2
VCTRUNK1
VC4-4:VC12:1-5
VC4-1:VC12:1-5
VCTRUNK2
VC4-4:VC12:6-15
VC4-1:VC12:6-15
SDH
NE3
EFS8
PORT2 PORT1
4 Configuring Ethernet Services
Boards.
NE3 :EFS8
PORT1
User A2
PORT2
User B2
PORT2
4-45