Zte ZXR10 8900E series, Product Description

Page: 51 / 132

ZXR10 8900E series Core Switch Product Description
ZTE Confidential Proprietary © 2013 ZTE CORPORATION. All rights reserved. 41
Figure 3-11 end to end MPLS QoS
3.5 OAM
3.5.1 Ethernet OAM
With the rapid development of Ethernet in recent years, Ethernet networking is taking
larger proportion in network construction and Ethernet scale also keeps growing.
Ethernet is used to replace ATM equipment in access, aggregation, and backbone
network. At the same time IP bearer network is developing as a multiservice and
broadband network. Without carrier-class management, the traditional Ethernet cannot
detect, notify or separate L2 network failure. The network manamgement system
adopting SNMP can only manage link and equipment state. It cannot detect E2E
connection performance and state of user service. When there’s network failure, it cannot
be located or located quickly. Besides, with the wide application of network equipment,
the managers pay more attention to OAM of Ethernet equipment.
ZXR10 8900E series support three standards of Ethernet OAM at the moment:

IEEE 802.3ah(Operations, Administration, and Maintenance-OAM)

IEEE 802.1ag(Connectivity Fault Management-CFM)
IEEE 802.3ah operation, management and maintenance standard is the formal one of
IEEE. It takes “link” level management, taking monitoring and failure processing of P2P
(or virtual P2P) Ethernet link. The protocol has great significance in connection
management of these points at the places where failures tend to occur such as the last
mile for the network user.
IEEE 802.1ag Connectivity Fault Management is the draft standard of IEEE at present. It
takes “service” level management. It provides the network with easy and quick fault
discovery, detection and management. It submits effective detection, separation and
connectivity fault report of the virtual bridge LAN.
8900E supports OAM that complies with the above standard. It provides Ethernet
Connectivity Check (ETH-CC), Ethernet LoopBack (ETH-LB), and Ethernet Link Trace
(ETH-LT). It supports Frame Loss Measurement (ETH-LM), and Frame Delay