
l
This bridge checks the contents of the VLAN tags that are in the packets and performs
Layer 2 switching according to the destination MAC addresses and the S-VLAN IDs of the
packets.
Figure 4-6
EVPLAN services (IEEE 802.1ad bridge)
NM
NE3
NE2
NE1
NE4
PORT1
User M
PORT1
User N
PORT6
PORT5
VoIP
HSI
20
HSI
10
VoIP
C-VLAN
Service
11
11
8
8
PORT5
VCTRUNK1
VCTRUNK2
S-VLAN 100
IEEE 802.1ad bridge
IEEE 802.1ad bridge
PORT6
VCTRUNK1
VCTRUNK2
S-VLAN 200
20
HSI
10
VoIP
C-VLAN
Service
VCTRUNK
4.2 Basic Concepts
Before you configure Ethernet boards with services, you need to learn the basic concepts
including external port, internal port, logical port, and bridge so that you can understand the
service configuration process and the signal flow when the boards process the services.
4.2.1 Formats of Ethernet Frames
4.2.2 Internal Ports and External Ports
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.
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