Broadband networks make use of network resource management so that link resources can be tracked and monitored alongside their respective connections. There are two resources which are generally monitored by network resource management:
1. Capacity – This pertains to the bandwidth or memory allocation of the link resources.
2. Connection Identifiers – This pertains to link options such as the asynchronous transfer mode, etc.
Aside from tracking and monitoring, network resource management also records the current capacity of the system and supervises allocation control. It is necessary to do proper control over allocations so that when connections make data requests, the setup process of the entire connection would not be hampered by heavy traffic.
Among its many tools is the virtual path technique. Through this, the network management resource controls transfers and transactions in between systems. To be able to do this, the technique operates by grouping different virtual channels accordingly within a virtual path. Then, connections will be made through the admission control. After that, the UPC and NPC can finally be simplified as the only traffic to be handled within their respective virtual paths. In this way, congestion of messages is easily handled because they can be distributed respectively. A single message would be used to refer to all virtual channels.
Aside from assisting in traffic, virtual paths also help in network resource management by supporting statistical multiplexing. Although statistical multiplexing happens, virtual paths make sure that no interference will happen in the middle of bit rate traffic. Usually, a connection identifier is also used for this purpose.