Patent ID: 7830870
Filing Date: 2010-11-09
Classification: H04L

Abstract:
1. A method for a router to transmit packets, comprising: receiving at the router a packet to be transmitted to a destination host; determining whether a structure pointer associated with the packet is recorded in a network address translation table of the router, wherein the structure pointer points to an address where routing information for the received packet is stored in the routing table, and wherein the network address translation table further comprises information therein for network address-port translation and is a subset of a routing table of the router; if the structure pointer is not recorded in the network address translation table, selecting the routing information in the routing table of the router, transmitting the packet based on the routing information in the routing table and recording the address of the selected routing information in the routing table in the network address translation table; and if the structure pointer is recorded in the network address translation table, directly reading the routing information according to a structure pointer recorded in the network address translation table that is associated with the recorded address, and transmitting the packet based on the routing information to the destination host.