公开(公告)号：US08917737B2

公开(公告)日：2014-12-23

申请号：US14056659

申请日：2013-10-17

Applicant: Cisco Technology, Inc.

Inventor： Hemant Singh ,  William Beebee, Jr. ,  Ralph Droms ,  Ole Troan

IPC: H04L12/28 ,  H04L12/24 ,  H04L29/12

CPC classification number: H04L41/0803 ,  H04L29/12226 ,  H04L41/0816 ,  H04L61/2015 ,  H04L61/6059

Abstract: Techniques for automatically identifying an edge-facing router in a network are provided. In one technique, a DHCP message is obtained at a router of a subscriber network. An options field of the DHCP message is identified. The options field of the DHCP message is analyzed to determine whether data in the options field indicates that first router is SP-facing. If it is determined that the router is an SP-facing router, then identification data that identifies the router as an SP-facing router is stored.

Abstract translation: 提供了一种用于自动识别网络中边缘路由器的技术。 在一种技术中，在订户网络的路由器处获得DHCP消息。 识别DHCP消息的选项字段。 分析DHCP消息的选项字段以确定选项字段中的数据是否指示第一个路由器是面向SP的。 如果确定路由器是面向SP的路由器，则存储将路由器标识为面向SP的路由器的标识数据。