发明授权
- 专利标题： Distributed stateful path computation element overlay architecture
- 专利标题（中）： 分布状态路径计算元素覆盖架构
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申请号： US13524071申请日： 2012-06-15
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公开(公告)号： US08855014B2公开(公告)日： 2014-10-07
- 发明人: Stefano Previdi , Jean-Philippe Vasseur , Jan Medved , David Ward
- 申请人： Stefano Previdi , Jean-Philippe Vasseur , Jan Medved , David Ward
- 申请人地址： US CA San Jose
- 专利权人： Cisco Technology, Inc.
- 当前专利权人： Cisco Technology, Inc.
- 当前专利权人地址： US CA San Jose
- 代理机构： Edwards Wildman Palmer LLP
- 代理商 James M. Behmke; Stephen D. LeBarron
- 主分类号： H04L12/28
- IPC分类号： H04L12/28 ; H04L1/00
摘要：
In one embodiment, a particular device in a computer network maintains a locally owned tunnel-state table, and joins a distributed hash table (DHT) ring. In addition, the locally owned tunnel-state table is shared with other devices of the DHT ring to establish a DHT-owned tunnel-state table. The particular device (and other devices) determines ownership of link-state advertisements (LSAs) for a specific portion of a traffic engineering database (TED) according to the DHT ring. As such, when the particular device (or any device) computes a path for a tunnel using a local TED, the particular device may request permission to use resources along the computed path that were advertised in particular LSAs from owners of those particular LSAs when not owned by the particular device.
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