Service Types; Figure 4-1 Epl Services; Table 4-1 Corresponding Relations Between The External Ports And The Vctrunks (Epl Services) - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide

4.1 Service Types

In compliance with ITU-T G.8011x/Y.1307x, Huawei MSTP equipment supports Ethernet
private line (EPL), Ethernet virtual private line (EVPL), Ethernet private local area network
(EPLAN), and Ethernet virtual private local area network (EVPLAN) services.
EPL Services
Two nodes are used to access EPL services and implement transparent transmission of the
Ethernet services of the users. The service of one user occupies one VCTRUNK and need not
share the bandwidth with the services of the other users. Hence, in the case of EPL services, a
bandwidth is exclusively occupied by the service of a user and the services of different users are
isolated. In addition, the extra QoS scheme and security scheme are not required.

Figure 4-1 EPL services

User A1
User B1
The corresponding relations between the PORTs (namely, external ports) and the VCTRUNKs
are listed in
Table 4-1 Corresponding relations between the external ports and the VCTRUNKs (EPL
services)
NE1
User A1
User B1
EVPL Services
In the case of EVPL services, services of different users share the bandwidth. Hence, the VLAN/
QinQ scheme needs to be used for differentiating the services of different users. If the services
of different users need to be configured with different quality levels, you need to adopt the
corresponding QoS scheme. EVPL services are classified into two types, depending on whether
the PORT or VCTRUNK is shared.
Issue 02 (2011-06-30)
NE 1
VCTRUNK1
Port1
Port2
VCTRUNK2
Table 4-1.
PORT1←→VCTRUNK1
PORT2←→VCTRUNK2
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4 Configuring Ethernet Services
NE2
Port1
Port2
NE2
VCTRUNK1←→PORT1
VCTRUNK2←→PORT2
User A2
User B2
User A2
User B2
4-3