Introduction

Definition

HWECC is a DCN solution provided by Huawei. In this solution, the NMS manages NEs using network management messages that are encapsulated in the HWECC protocol stack.

Figure 1 shows how network management messages are transmitted in the HWECC solution. Network management messages encapsulated in compliance with the HWECC protocol stack can be transmitted over the following DCN channels:

• Data communications channels (DCCs) carried by SDH lines/SDH radio links/PDH radio links/Integrated IP radio links
• Ethernet paths carried by Integrated IP radio links or FE/GE ports
• Ethernet network management port or NE cascade port
• D1 to D3, D4 to D12, or D1 to D12 bytes in an SDH frame carried over channelized STM-1 ports
• DCCs carried over multi-functional cascade port

Figure 1 Networking diagram of the HWECC solution

Purpose

HWECC is preferred as the DCN solution when a network is comprised of only OptiX transmission equipment that supports the HWECC protocol stack.

NOTE:

The IP DCN solution enhances its functions whereas the HWECC solution provides poor network stability and does not support IP-based applications such as SNMP. Therefore, the IP DCN is preferred when each NE on the network supports the IP DCN solution.