Fast recovery of multicast router ports on spanning tree protocol (STP) topology change in a layer 2 (L2) network
US9602396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | May 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/65
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a system includes a multicast snooping querier configured to send and receive Internet Group Membership Protocol (IGMP) messages, and one or more IGMP switches interconnected to form a network, wherein at least one of the one or more IGMP switches is connected to the multicast snooping querier, wherein the one or more IGMP switches are configured to: handle IGMP messages, and create a general query solicit (GQS) message configured to solicit a general query from the multicast snooping querier, and wherein the multicast snooping querier is configured to send out a general query (GQ) message on all ports in response to receiving the GQS message to solicit port information and group membership information from each of the one or more IGMP switches. In other embodiments, systems, methods and computer program products are described to enable fast recovery of multicast router ports, upon a STP topology change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.