Juniper Networks, Inc.

Sun Microsystems, Inc.

Rajiv N Patel

Dennis C Ferguson

Pradeep S Sindhu

Gerald Cheung

Adam C Malamy

Norman M Hayes

Kaushik Ghosh

Scott Mackie

Sunil Nanda

Methods and devices for processing packets are provided. The processing device may include an input interface for receiving data units containing header information of respective packets; a first module configurable to perform packet filtering based on the received data units; a second module configurable to perform traffic analysis based on the received data units; a third module configurable to perform load balancing based on the received data units; and a fourth module configurable to perform route lookups based on the received data units.

Filtering and route lookup in a switching device

A method and apparatus for performing a lookup in a switching device of a packet switched network where the lookup includes a plurality of distinct operations each of which returns a result that includes a pointer to a next operation in a sequence of operations for the lookup. The method includes determining a first lookup operation to be executed, executing the first lookup operation including returning a result and determining if the result includes a pointer to another lookup operation in the sequence of operations. If the result includes a pointer to another lookup operation, the lookup operation indicated by the result is executed. Else, the lookup is terminated.

Processing packets by a network device

Methods and devices for processing packets are provided. The processing device may Include an input interface for receiving data units containing header information of respective packets; a first module configurable to perform packet filtering based on the received data units; a second module configurable to perform traffic analysis based on the received data units; a third module configurable to perform load balancing based on the received data units; and a fourth module configurable to perform route lookups based on the received data units.

A system includes an input device configured to receive a packet having a header and a packet processing device. The packet processing device is configured to examine the header, identify at least one function from a group of functions based on at least a portion of the header, where the group of functions includes an index table lookup function, a filtering function, and a longest best match lookup function, perform the identified at least one function for the packet to obtain a result, and forward the packet using the result.

Systems and methods for processing packets with multiple engines

Samples from an addressed data forwarding devices, such as a router, are forwarded to a specified next hop address and/or out a specified next hop interface. However, the sampling and/or next hop forwarding is suppressed if the specified next hop address is unstable or unresolved.

Sampling to a next hop

Systems and methods for processing packets

A method and apparatus for looking up a key associated with a packet to determine a route through a routing device, the method including, upon receipt of a key, forward traversing one or more nodes which make up a trie stored in a memory by evaluating at each node traversed a bit in the key as indicated by a bit-to-test indicator associated with each node. A value of the bit in the key determining the path traversed along the trie. The method includes locating an end node having a route and comparing the route to the key. If they match, destination information associated with the end node is outputted to guide the transfer of the packet through the routing device. If they do not match, the trie is traversed backwards to locate a best match for the key.

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San Jose, CA, United States of America

Rajiv N Patel