H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01)
Patent
CA 2302744
The present invention relates to a lookup device (30) and a method for classification and forwarding of packets. The lookup device (30) comprises i stages (321, 322, 323, 324) wherein each stage (321, 322, 323, 324) represents a predetermined prefix length, and a prefix represents a group of addresses. The lookup device (30) also comprises a routing memory means (34) connected to said i:th stage (324), wherein each stage (321, 322, 323, 324) comprises a memory means (361, 362, 363, 364) for storing a table of entries, wherein each entry comprises a pointer field which either comprises a pointer to the memory means in the next stage, or a pointer to the routing memory means (34) storing the forwarding information.
La présente invention concerne un dispositif de consultation (30) et un procédé de classement et d'acheminement de paquets. Le dispositif de consultation (30) comporte un nombre i d'étages (32¿1?, 32¿2?, 32¿3?, 32¿4?), chaque étage (32¿1?, 32¿2?, 32¿3?, 32¿4?) représentant une longueur définie de préfixe, le préfixe représentant un groupe d'adresses. Le dispositif de consultation (30) comporte également un organe mémoire d'acheminement (34) connecté au i?ème¿ étage (32¿4?), chaque étage (32¿1?, 32¿2?, 32¿3?, 32¿4?) comportant un organe mémoire (36¿1?, 36¿2?, 36¿3?, 36¿4?) permettant de stocker une table de rubriques. Chaque rubrique comporte une zone pointeur qui contient, soit un pointeur désignant l'organe mémoire de l'étage suivant, soit un pointeur désignant l'organe de mémoire d'acheminement (34) conservant les informations d'acheminement.
Moestedt Andreas
Sjodin Peter
Gowling Lafleur Henderson Llp
Sics Swedish Institute Of Computer Science
Sics Swedish Institute Of Computer Science Ab
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