Session-based / Flow-aware Load Balancing increases user control of traffic distribution amongst multiple monitoring tools, increasing output capacity while maintaining session integrity. Packets from a unique session flow will be balanced to the same tool port, always, using up to 10 balancing criteria, e.g. source and / or destination MAC address, EtherType, IP address, TCP/UDP port, and GTP TEID. Standard Load Balancing allows users to balance traffic based on up to ten criteria.Extended Load Balancing expands the ten criteria to twenty-three. Twelve extended flow balancing options include the inner layer 3 and/or layer 4 headers inside encapsulated packets, including GTP and MPLS encapsulated traffic. This removes the need to de-encapsulate the packets before load balancing can occur. One full session balancing option provides the ability to balance complete GTP tunneled user sessions based on IMSI (mobile subscriber identifier) by correlating control and user plane traffic for each IMSI.
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