Abstract: A distributed policy proxy system offloads network policy processing from an overloaded network element to policy proxy network elements. A network controller detects that policy resources are overloaded at a network element, and assigns a range of endpoints to each policy proxy network element. Each policy proxy network element is assigned to handle policy processing for traffic belonging to a corresponding assigned range of endpoints. The network controller provides instructions to the policy proxy network elements to enable each policy proxy network element to apply the network policy for its assigned range of endpoints. The network controller also provides instructions to the overloaded network element to redirect a packet from the first endpoint to a first policy proxy network element based on a destination of the packet.

Abstract: A distributed policy proxy system offloads network policy processing from an overloaded network element to policy proxy network elements. A network controller detects that policy resources are overloaded at a network element, and assigns a range of endpoints to each policy proxy network element. Each policy proxy network element is assigned to handle policy processing for traffic belonging to a corresponding assigned range of endpoints. The network controller provides instructions to the policy proxy network elements to enable each policy proxy network element to apply the network policy for its assigned range of endpoints. The network controller also provides instructions to the overloaded network element to redirect a packet from the first endpoint to a first policy proxy network element based on a destination of the packet.

Abstract: A distributed policy proxy system offloads network policy processing from an overloaded network element to policy proxy network elements. A network controller detects that policy resources are overloaded at a network element, and selects a group of policy proxy network elements. The network controller assigns an exclusive range of endpoint groups to each policy proxy network element. Each policy proxy network element is assigned to handle policy processing for its assigned range of endpoint groups. The network controller provides instructions to the policy proxy network elements to enable each policy proxy network element to apply the network policy for its assigned range of endpoint groups. The network controller also provides instructions to the overloaded network element to redirect a packet from the first endpoint group to a first policy proxy network element based on a destination of the packet.

Abstract: A distributed policy proxy system offloads network policy processing from an overloaded network element to policy proxy network elements. A network controller detects that policy resources are overloaded at a network element, and selects a group of policy proxy network elements. The network controller assigns an exclusive range of endpoint groups to each policy proxy network element. Each policy proxy network element is assigned to handle policy processing for its assigned range of endpoint groups. The network controller provides instructions to the policy proxy network elements to enable each policy proxy network element to apply the network policy for its assigned range of endpoint groups. The network controller also provides instructions to the overloaded network element to redirect a packet from the first endpoint group to a first policy proxy network element based on a destination of the packet.

Abstract: A network device determines the presence of the pre-specified string in a message based on a sequence matching rule. A sequence represents non-contiguous portions of the message. A combination of content addressable memory, programmable processing units, and the programmable control unit may determine the presence of the pre-specified string in the message by comparing the non-contiguous portions of the message. Such an approach may reduce the computational resources required for searching the pre-specified string in the message.