Arquitectura de balanceo de carga dinamico para la logica de conmutacion EtherChannel
The efficient deployment of the switching network infrastructure is a critical fact in the network management objectives of the enterprises that provide massive customers and data transport communication services. Indeed, the bandwidth growing needs are driving the development and standardization of the LAN/WAN Ethernet technologies. However, standardization bodies like IEEE recognize that market trends will ever drive towards more bandwidth; and, in some degree, to increase the existing network technologies penetration like 40Gigabit Ethernet, and to reduce the current 100Gigabit Ethernet unfolding costs. Cisco has developed a network technology called EtherChannel whose objective is to assist customers in the Ethernet switching infrastructure growing according to specific needs optimizing the investments related to the mentioned process (infrastructure capex) EtherChannel based deployments make possible a better use of the existing infrastructure bundling up to 8 Ethernet links FastEthernet, Gigabit Ethernet or 10Gigabit Ethernet in a logical link with a potential bandwitdh up to full duplex 160Gbps. The EtherChannel s load allocation method is known as Bits Hashing which allocates traffic into the links that are part of the aggregate channel according to a bit pattern analysis of the packet s headers without take into account the links utilization, fact that locates this method into static load allocation algorithms group. The Bits Hashing method dependency with traffic patterns, applications nature and new network services trends leads to an unbalanced utilization to the logical channel. This work tackles the consideration of a dynamic load allocation method for the utilization of multiple communication links framed under EtherChannel technology, by means of the design and proposal of a switching architecture oriented to getting better the global utilization of the bundled links group, performance measurement as well as early detection and proactive reaction to burst traffic conditions so that logical channel utilization level can be optimized and it could be possible to extend the network infrastructure life cycle. The work results expect to be a technical support for future researches oriented to optimization of the methods taken into account, Ethernet infrastructure simulation, and hardware platforms deployments.