发明授权
- 专利标题: Performing non-revertive failover with network devices
- 专利标题(中): 使用网络设备执行非恢复故障切换
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申请号: US11621434申请日: 2007-01-09
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公开(公告)号: US07738367B1公开(公告)日: 2010-06-15
- 发明人: Rahul Aggarwal , Nischal Sheth
- 申请人: Rahul Aggarwal , Nischal Sheth
- 申请人地址: US CA Sunnyvale
- 专利权人: Juniper Networks, Inc.
- 当前专利权人: Juniper Networks, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Shumaker & Sieffert, P.A.
- 主分类号: G01R31/08
- IPC分类号: G01R31/08
摘要:
Techniques are described for performing non-revertive failover with network devices. A network device including a control unit and interface cards receives routing information protocol (RIP) updates each having a metric value. The control unit signals bidirectional forwarding detection (BFD) sessions based on the metric values of each of the RIP updates with, for example, a media gateway. The control unit also selectively installs a RIP route based on the metric values. The media gateway monitors the BFD sessions, and upon failure of an active BFD session, indicates the network device to perform non-revertive failover by sending a revised plurality of RIP updates. The network device performs non-revertive failover according to the revised plurality of RIP updates. Because of the flexibility of BFD, the network device need not revert back to a previous RIP route, therefore curtailing excessive failover.
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