Tunnel path MTU discovery
US8687653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2009 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Sep 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2212/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A solution for tunnel path MTU discovery includes, at a first network device configured as an origination endpoint for a tunnel, storing a keep-alive packet having a size of an interface maximum transmission unit (MTU), the keep-alive packet indicating the packet should not be fragmented, the second network device configured as a termination endpoint for the tunnel. If the sending fails, the size of the keep-alive packet is iteratively changed to converge upon a path MTU, where the path MTU is the size of a largest keep-alive packet that can be sent from the first network device to the second network device without fragmentation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.