公开(公告)号：US10027587B1

公开(公告)日：2018-07-17

申请号：US15085823

申请日：2016-03-30

Applicant: Amazon Technologies, Inc.

Inventor： Kari Ann O'Brien ,  Thomas A. Volpe ,  Bijendra Singh

IPC: H04L12/28 ,  H04L12/741 ,  H04L12/723 ,  H04L29/06 ,  H04L29/08 ,  H04L12/933

Abstract: Disclosed herein is an apparatus for processing an Internet Protocol (IP) header and label switching (LS) headers of a packet in a pipeline. The apparatus includes an LS header processing circuit configured to select a first operation for the packet using an LS header from the packet, and an IP header processing circuit configured to perform an IP lookup to select a second operation for the packet. The apparatus further includes a tunnel initiation circuit configured to initiate an LS tunnel or IP tunnel. The LS header processing circuit, the IP header processing circuit, and the tunnel initiation circuit are operable to operate sequentially on a same packet and concurrently on different packets in a pipeline. Each of these circuits is operable to be bypassed based on an outermost header in the packet, or the selected one of the first operation or the second operation.

公开(公告)号：US10003555B1

公开(公告)日：2018-06-19

申请号：US15148965

申请日：2016-05-06

Applicant: Amazon Technologies, Inc.

Inventor： Kari Ann O'Brien ,  Bijendra Singh

IPC: H04L12/931 ,  H04L12/755 ,  H04L12/743

CPC classification number: H04L49/405 ,  H04L45/021 ,  H04L45/7453

Abstract: Power management of a routing table, which comprises a plurality of hash tables, is provided by supporting various power domain configurations. Each power domain configuration can be associated with a different number of power domains than other power domain configurations. Each power domain can add vertical capacity to the entire routing table by adding a fixed number of buckets to each of the hash tables. Efficient power management can be achieved by switching between a lower power domain configuration and a higher power domain configuration during runtime based on the dynamic load conditions.