EP 4324174 A1 20240221 - PREFIX LENGTH EXPANSION IN PACKET PROCESSORS
Title (en)
PREFIX LENGTH EXPANSION IN PACKET PROCESSORS
Title (de)
PRÄFIXLÄNGENERWEITERUNG IN PAKETPROZESSOREN
Title (fr)
EXPANSION DE LONGUEUR DE PRÉFIXE DANS DES PROCESSEURS DE PAQUETS
Publication
Application
Priority
- GB 202105368 A 20210415
- US 202117343655 A 20210609
- US 2022022233 W 20220329
Abstract (en)
[origin: WO2022221044A1] A method performed by a packet processor comprises retrieving a first prefix length for a first lookup stage and a shorter second prefix length for a second lookup stage. The packet processor can receive instructions to program an action entry. The length of the action entry prefix is compared to the first prefix and second prefix length. If it is determined that the length of the action entry prefix is shorter than the second prefix length, the second prefix length is selected as an expanded prefix length. If it is determined that the length of the action entry prefix is longer than the second prefix length and shorter than the first prefix length, then the first prefix length is selected as the expanded prefix length. Expanded action entries are generated with expanded prefixes of the expanded prefix length and stored at the lookup stage associated with the expanded prefix length.
IPC 8 full level
H04L 45/7452 (2022.01); H04L 45/00 (2022.01); H04L 45/748 (2022.01)
CPC (source: EP)
H04L 45/54 (2013.01); H04L 45/748 (2013.01); H04L 45/7452 (2022.05)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
US 2022022233 W 20220329; EP 22718376 A 20220329