公开(公告)号：US09923812B2

公开(公告)日：2018-03-20

申请号：US14256919

申请日：2014-04-18

Applicant: Cisco Technology, Inc.

Inventor： Dino Farinacci ,  Thomas Edsall

IPC: H04L12/46 ,  H04L12/701 ,  H04L12/741 ,  H04L12/775 ,  H04L12/931 ,  H04L12/939 ,  H04L29/12

CPC classification number: H04L45/74 ,  H04L12/4633 ,  H04L45/00 ,  H04L45/58 ,  H04L49/351 ,  H04L49/552 ,  H04L49/604 ,  H04L49/70 ,  H04L61/103 ,  H04L61/6022 ,  H04L61/6077

Abstract: In one embodiment, a solution is provided wherein redundant routers are treated as a single emulated switch. When a packet is received at a layer 2 edge switch from a host, the layer 2 edge switch may determine a switch identifier for the emulated switch using a destination anycast hardware address contained in the packet. The anycast hardware address may identify an emulated switch comprising a plurality of routers. Then a header may be added to the packet, the header including the switch identifier. Following that, the packet may be forwarded to another layer 2 switch along a shortest path from the layer 2 edge switch to the emulated switch.

公开(公告)号：US20140226669A1

公开(公告)日：2014-08-14

申请号：US14256919

申请日：2014-04-18

Applicant: Cisco Technology, Inc.

Inventor： Dino Farinacci ,  Thomas Edsall

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L12/4633 ,  H04L45/00 ,  H04L45/58 ,  H04L49/351 ,  H04L49/552 ,  H04L49/604 ,  H04L49/70 ,  H04L61/103 ,  H04L61/6022 ,  H04L61/6077

Abstract: In one embodiment, a solution is provided wherein redundant routers are treated as a single emulated switch. When a packet is received at a layer 2 edge switch from a host, the layer 2 edge switch may determine a switch identifier for the emulated switch using a destination anycast hardware address contained in the packet. The anycast hardware address may identify an emulated switch comprising a plurality of routers. Then a header may be added to the packet, the header including the switch identifier. Following that, the packet may be forwarded to another layer 2 switch along a shortest path from the layer 2 edge switch to the emulated switch.

Abstract translation: 在一个实施例中，提供了一种解决方案，其中冗余路由器被视为单个仿真开关。 当在来自主机的层2边缘交换机处接收到分组时，层2边缘交换机可以使用包含在分组中的目的地任播硬件地址来确定仿真交换机的交换机标识符。 任播硬件地址可以标识包括多个路由器的仿真交换机。 然后可以向分组添加报头，该报头包括交换机标识符。 之后，分组可以沿着从第2层边缘交换机到仿真交换机的最短路径转发到另一层2交换机。

公开(公告)号：US20170346733A9

公开(公告)日：2017-11-30

申请号：US14256919

申请日：2014-04-18

Applicant: Cisco Technology, Inc.

Inventor： Dino Farinacci ,  Thomas Edsall

IPC: H04L12/741 ,  H04L12/931 ,  H04L12/775 ,  H04L29/12 ,  H04L12/939 ,  H04L12/701 ,  H04L12/46

CPC classification number: H04L45/74 ,  H04L12/4633 ,  H04L45/00 ,  H04L45/58 ,  H04L49/351 ,  H04L49/552 ,  H04L49/604 ,  H04L49/70 ,  H04L61/103 ,  H04L61/6022 ,  H04L61/6077

Abstract: In one embodiment, a solution is provided wherein redundant routers are treated as a single emulated switch. When a packet is received at a layer 2 edge switch from a host, the layer 2 edge switch may determine a switch identifier for the emulated switch using a destination anycast hardware address contained in the packet. The anycast hardware address may identify an emulated switch comprising a plurality of routers. Then a header may be added to the packet, the header including the switch identifier. Following that, the packet may be forwarded to another layer 2 switch along a shortest path from the layer 2 edge switch to the emulated switch.