Motorola Corporation

Marvell Israel (misl) Ltd.

Dovrat Zifroni

Avi Hagai

Eran Kirzner

Henri Sznajder

Dmitry Lyachover

Aspects of the disclosure provide a network device. The network device includes a search engine, a ternary content addressable memory (TCAM) cache engine, a search key generation unit and an output controller. The search engine stores a lookup table of entries for rules of packet processing, and searches the lookup table in response to packets received from a network interface of the network device. The TCAM cache engine caches a subset of the entries in the lookup table based on hit statistics of the entries. The search key generation unit generates a search key based on a received packet and provides the search key to the search engine and to the TCAM cache engine. The output controller outputs a search result from the TCAM cache engine when the TCAM cache engine has a matching entry to the search key.

Method and apparatus for search engine cache

A system and a method of the present invention for implementing a combined use Timer_CU within an ATM transmitter. The ATM transmitter being able to handle a plurality of ATM channels, at least one of the channel being an ATM AAL2 channel. The ATM channels can provide ATM-cells at different traffic parameters, such as, for example, different cell or bit rate, priorities, and bursts. The system schedules channels in a first table by channel identifiers. Cyclical pointers to this first table advance (i) at every time slot, (ii) within a time slot, whereas (iii) CPS-Packets with one or more octets already packed wait at most the duration of a Timer_CU before being scheduled to be sent by CPS transmitter to ATM transmitter. Conveniently, the schedule scheme is based upon a scheduling table comprising of a plurality of time slots. CPS-Packets are multiplexed and packed to form a CPS_PDU, the CPS_PDU is submitted to a processor that handles the transmission of ATM cells, each CPS_PDU is converted to an ATM cell and transmitted to a communication channel during a single time slot. Therefore, Timer_CU ends when the ATM cell actually is transmitted.

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Shoham, Israel

Dovrat Zifroni