
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.
shows the signal flow and timeslot allocation of the EPL services.
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 Boards
.
Figure 4-25
Signal flow and timeslot allocation (Ethernet switching board)
VCTRUNK1
VC4-4:VC12:1-5
VCTRUNK2
VC4-4:VC12:6-15
SDH
NE1
VCTRUNK1
VC4-4:VC12:1-5
PORT1
NE3
User A2
VCTRUNK2
VC4-4:VC12:6-15
PORT2
User B2
VC4-1:VC12:6-15
VC4-1:VC12:1-5
:EFS8
:EFS8
PORT1
PORT2
User A1
User B1
NE2
l
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.
l
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.
Table 4-14
Parameters of external ports on the Ethernet boards
Parameter
NE1
NE3
Board
EFS8
EFS8
Port
PORT1
PORT2
PORT1
PORT2
OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
4 Configuring Ethernet Services
Issue 02 (2011-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4-45