公开(公告)号：US10911531B2

公开(公告)日：2021-02-02

申请号：US16174160

申请日：2018-10-29

Applicant: Level 3 Communications, LLC

Inventor： Paul E. Stolorz ,  John K. Salmon ,  Michael S. Warren ,  Jeffrey G. Koller ,  Aric Hagberg ,  Maksim Yevmenkin ,  Mark Brady ,  David Pfitzner ,  Ted Middleton

IPC: G06F15/173 ,  H04L29/08 ,  H04L29/06 ,  H04L29/12 ,  H04L12/24 ,  H04L12/26 ,  H04W4/021

Abstract: A network includes a first tier of servers, a second tier of servers and a third tier of servers. The first tier of servers comprises a plurality of primary servers capable of responding to requests. The plurality of primary servers includes at least one dynamic server having a load share characteristic that is dynamically altered during a first period in time and at least one static server having a constant load share characteristic during the first period in time. The second tier of servers includes at least two first layer overflow servers. Each of the first layer overflow servers is configured to provide response duties in the event that one or more of the primary servers is unavailable or overloaded. The third tier of servers comprising at least two second layer overflow servers. Each of the second layer overflow servers is configured to provide response duties in the event that one or more of the primary servers is unavailable or overloaded and one or more of the first layer overflow servers is unavailable or overloaded.

公开(公告)号：US20160255146A1

公开(公告)日：2016-09-01

申请号：US14954092

申请日：2015-11-30

Applicant: LEVEL 3 COMMUNICATIONS, LLC

Inventor： Paul E. Stolorz ,  John K. Salmon ,  Michael S. Warren ,  Jeffrey G. Koller ,  Aric Hagberg ,  Maksim Yevmenkin ,  Mark Brady ,  David Pfitzner ,  Ted Middleton

IPC: H04L29/08 ,  H04L29/12 ,  H04L12/26 ,  H04L12/24

CPC classification number: H04L67/1034 ,  H04L29/06 ,  H04L29/12066 ,  H04L29/12783 ,  H04L41/0631 ,  H04L41/069 ,  H04L41/0893 ,  H04L41/22 ,  H04L43/00 ,  H04L43/04 ,  H04L43/045 ,  H04L43/06 ,  H04L43/0811 ,  H04L43/0817 ,  H04L43/0852 ,  H04L43/10 ,  H04L43/12 ,  H04L61/1511 ,  H04L61/35 ,  H04L67/02 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/1021 ,  H04L67/1023 ,  H04L67/1029 ,  H04L67/1031 ,  H04L67/1036 ,  H04L67/18 ,  H04L67/26 ,  H04L69/329 ,  H04W4/02 ,  H04W4/021 ,  H04W4/20

Abstract: A method includes monitoring the operational status of at least some name servers in a name server network. Based on the monitoring, when an error or anomalous condition is detected at a particular name server, creating a policy to indicate the status of the particular name server. The policy is taken into account when resolving hostnames using the name server network.

Abstract translation: 一种方法包括监视名称服务器网络中的至少一些名称服务器的操作状态。 基于监视，当在特定名称服务器上检测到错误或异常情况时，创建指示特定名称服务器的状态的策略。 在使用名称服务器网络解析主机名时，应考虑该策略。

公开(公告)号：US10116738B2

公开(公告)日：2018-10-30

申请号：US14954092

申请日：2015-11-30

Applicant: LEVEL 3 COMMUNICATIONS, LLC

Inventor： Paul E. Stolorz ,  John K. Salmon ,  Michael S. Warren ,  Jeffrey G. Koller ,  Aric Hagberg ,  Maksim Yevmenkin ,  Mark Brady ,  David Pfitzner ,  Ted Middleton

IPC: G06F15/173 ,  H04L29/08 ,  H04L29/06 ,  H04L29/12 ,  H04L12/24 ,  H04L12/26 ,  H04W4/02 ,  H04W4/021 ,  H04W4/20

Abstract: A method includes monitoring the operational status of at least some name servers in a name server network. Based on the monitoring, when an error or anomalous condition is detected at a particular name server, creating a policy to indicate the status of the particular name server. The policy is taken into account when resolving hostnames using the name server network.