Mitigating priority flow control deadlock in stretch topologies
US10834010B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | May 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/357
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments provide for mitigating priority flow control deadlock in stretch topologies by initializing a plurality of queues in a buffer of a leaf switch at a local cluster of a site having a plurality of clusters, wherein each queue of the plurality of queues corresponds to a respective one cluster of the plurality of clusters; receiving a pause command for no-drop traffic on the leaf switch, the pause command including an internal Class-of-Service (iCoS) identifier associated with a particular cluster of the plurality of cluster and a corresponding queue in the plurality of queues; and in response to determining, based on the iCoS identifier, that the pause command was received from a remote spine switch associated with a different cluster than the local cluster: forwarding the pause command to a local spine switch in the local cluster; and implementing the pause command on the corresponding queue in the buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.