The EXA40 and EXA40D are next-generation network packet brokers capable of filtering up to OSI Layer 7. In addition to the traditional L2-4 functionality commonly found on network packet brokers, the EXA40 and EXA40D are capable of advanced functionality such as deduplication, time-stamping, and session-based filtering on a keyword (search the payload of a packet for specific keyword match) or regular expression matching (search the payload for a pattern match). This is accomplished by the addition of powerful x86 processor(s) paired with a high-performance ASIC. The ASIC handles the Layer 2-4 functions while the processors handle the L5-7 filtering.
The EXA40 features a single CPU while the EXA40D features dual CPUs. The EXA40 and EXA40D are also ideal devices for applications that require protocol decoding and correlation (e.g. SIP and RTP correlation; User Plane and Signalling Plane of mobile networks). Additionally, the EXA40 and EXA40D offer critical features for Mobile Network Operators such as GTP tunnel stripping, GTP encapsulation, GTP load balancing, and IMSI filtering.