公开(公告)号：US20170288970A1

公开(公告)日：2017-10-05

申请号：US15083732

申请日：2016-03-29

Applicant: Juniper Networks, Inc.

Inventor： Wen Lin ,  John E. Drake ,  Sunil Kumar Malali ,  Kapil Arora ,  Vikram Nagarajan

IPC: H04L12/24

CPC classification number: H04L41/12 ,  H04L12/46 ,  H04L12/4625 ,  H04L45/02 ,  H04L45/54 ,  H04L45/64 ,  H04L45/66 ,  H04L61/2084 ,  H04L61/6004 ,  H04L61/6022

Abstract: The techniques described are directed to providing mass withdrawal of media access control (MAC) routes for network devices in an Ethernet virtual private network data center interconnect (EVPN DCI). MAC routes to reach the learned MAC addresses are stored in routing tables with corresponding top-of-rack Ethernet segment identifier (TOR-ESI) values that represent the Ethernet segments from where the MAC addresses were learned. A provider edge (PE) network device may configure and advertise a virtual Ethernet segment identifier (vESI) that includes a plurality of TOR-ESI values. As Ethernet segments of the data center become unavailable, the corresponding TOR-ESI values may be withdrawn from the vESI to form an updated vESI. In this way, MAC routes having a TOR-ESI value that was withdrawn from the vESI may be removed from the routing tables in each of the network devices.

公开(公告)号：US20160277199A1

公开(公告)日：2016-09-22

申请号：US14754612

申请日：2015-06-29

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Anish Peter ,  Robert W. Kebler

IPC: H04L12/18 ,  H04L12/725 ,  H04L12/773 ,  H04L12/44 ,  H04W72/00

CPC classification number: H04L45/30 ,  H04L12/185 ,  H04L12/1863 ,  H04L12/44 ,  H04L45/16 ,  H04L45/48 ,  H04L45/60

Abstract: Techniques are described for enhancements to Protocol Independent Multicast (PIM) to enable a last hop router (LHR) to perform source discovery and directly build or join a source tree. According to the techniques of this disclosure, the LHR builds a communication channel with a rendezvous point (RP) router and requests source information for at least one multicast group for which the LHR has interested receivers. The RP responds to the request by looking into a register database maintained by the RP and sending source information indicating at least one source that is actively providing traffic for the at least one multicast group. Based on the response, the LHR initiates a (S,G) PIM Join message toward the at least one source for the at least one multicast group to directly build or join at least one source tree.

Abstract translation: 描述了用于增强协议独立组播（PIM）的技术，以使最后一跳路由器（LHR）能够执行源发现并直接构建或加入源树。 根据本公开的技术，LHR与会合点（RP）路由器建立通信信道，并且为LHR具有感兴趣的接收者的至少一个多播组请求源信息。 RP通过查看由RP维护的寄存器数据库来发送请求，并且发送指示至少一个正在为至少一个多播组提供流量的源的源信息。 基于响应，LHR向至少一个多播组的至少一个源发起（S，G）PIM Join消息，以直接构建或加入至少一个源树。