公开(公告)号：US20150131659A1

公开(公告)日：2015-05-14

申请号：US14603580

申请日：2015-01-23

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Gregory J. Shepherd ,  John H.W. Bettink

IPC: H04L12/18 ,  H04L12/741

CPC classification number: H04L12/1886 ,  H04L45/16 ,  H04L45/54 ,  H04L45/745

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER). For example, one method involves receiving a packet at a node. The packet includes a bit string. The node traverses the bit string and selects an entry in a bit indexed forwarding table (BIFT). The entry includes a forwarding bit mask. Based on the forwarding bit mask and the bit string, the node forwards the packet.

Abstract translation: 用于执行位索引显式复制（BIER）的各种系统和方法。 例如，一种方法涉及在节点处接收分组。 该分组包括一个位串。 节点遍历位串并在位索引转发表（BIFT）中选择一个条目。 条目包括转发位掩码。 基于转发位掩码和位串，节点转发数据包。

公开(公告)号：US20150078378A1

公开(公告)日：2015-03-19

申请号：US14488790

申请日：2014-09-17

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Gregory J. Shepherd ,  Christian Martin ,  Neale D.R. Ranns ,  Jesper Skriver

IPC: H04L12/18 ,  H04L12/741 ,  H04L12/723 ,  H04L12/761

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50 ,  H04L45/74

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER) using multiprotocol label switching (MPLS). For example, one method involves receiving a packet that includes a MPLS label. The packet also includes a multicast forwarding entry. The method also involves determining, based on the value of the MPLS label, whether to use the multicast forwarding entry to forward the packet. The method further includes forwarding the packet.

Abstract translation: 使用多协议标签交换（MPLS）执行位索引显式复制（BIER）的各种系统和方法。 例如，一种方法涉及接收包括MPLS标签的分组。 该报文还包括组播转发表项。 该方法还包括根据MPLS标签的值确定是否使用组播转发表项转发报文。 该方法还包括转发分组。

公开(公告)号：US20150078377A1

公开(公告)日：2015-03-19

申请号：US14488761

申请日：2014-09-17

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ijsbrand Wijnands ,  Gregory J. Shepherd ,  Christian Martin

IPC: H04L12/18 ,  H04L12/741 ,  H04L12/761

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50 ,  H04L45/74

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER). For example, one method involves receiving a packet at a node. The packet includes a multicast forwarding entry. The multicast forwarding entry has a plurality of elements, and each element corresponds to a particular node. The method also involves comparing the multicast forwarding entry with forwarding information stored by the node. The method involves selecting a neighbor node based on the comparing, updating the multicast forwarding entry in the packet, and forwarding the packet to the neighbor node.

Abstract translation: 用于执行位索引显式复制（BIER）的各种系统和方法。 例如，一种方法涉及在节点处接收分组。 该分组包括组播转发表项。 多播转发条目具有多个元素，并且每个元素对应于特定节点。 该方法还涉及将组播转发表项与节点存储的转发信息进行比较。 该方法包括根据比较选择邻居节点，更新分组中的组播转发表项，并将报文转发给邻居节点。