Pre-Grant Publication Number: 20110026394
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Prior Art Detail
Summary / Description
| Summary / Description | White paper from RAD Data Communications |
Basic Information
| Type of Prior Art | Online Publication |
| URL | http://www.dspcsp.com/RAD/rfer_... |
| Author/Creator | RAD Data Communications |
| Title | Resilient Fast Ethernet Ring Technology |
| Publication Date | November 2002 |
| Publisher | |
| Directions to Document Location | |
| Additional Information | |
Notes / To Do
| Notes | |
Excerpt
Excerpt When traffic is present, all the RFER nodes exchange point-to-point control
messages; each node forwards link state control messages at a given time
interval through its two ring ports. Even if there are no ring messages, the
port will continue to send ‘keep-alive’ messages. When a node receives a
control message from a port, with an indication that its neighbor is also
receiving control messages, the link and the ring are deemed to be
functioning correctly. The link is considered ‘down’ when there is a
notification of physical link breakage, a control message doesn’t appear
within 30 ms, or if a control message is received with a failure indication.
Traffic is then sent in the opposite way around the ring.
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Relevance
Claims
1
Relevance
See the Excerpt. Disclosed is an ethernet ring, loop detection via link state control messages and keep-alive messages, and notification of a physical link breakage (a fault alarm message).
See the Excerpt. Disclosed is an ethernet ring, loop detection via link state control messages and keep-alive messages, and notification of a physical link breakage (a fault alarm message).
Claim Chart
Some
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