Method of MPOA status change notification
US6643289B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4608
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of notification and handling of device status changes in MPOA enabled ATM based networks. In a first method notification of changes in device status configuration are provided by selectively releasing one or more Data Direct VCs that were previously established be LECs connecting MPOA Servers and MPOA Clients. An MPOA Server, upon detecting a change to its device configuration status, releases the Data Direct VCs connecting its associated LEC to known MPSs and MPCs that are neighbors to it. All MPOA devices for which a Data Direct VC was released delete all LE_ARP cache entries associated with the ATM destination of the released Data Direct VC. In a second method, each MPOA device periodically sends keep alive messages as targetless LE_ARP messages having a time to live TLV appended. An MPOA device receiving the keep alive message, refreshes (i.e., restarts) a validation timer for each association made by the corresponding MPOA identification TLV. If the validation timer expires before being refreshed, the MPOA device deletes all associations previously made by the corresponding MPOA identification TLV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.