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US 2014/0177431 A1Published application
Graceful failover of a principal link in a fiber-channel fabric
AssigneeCisco Technology, Inc.
InventorsAnand HARIHARAN, Christian SASSO, Ronak DESAI
Life of this patent
Estimating the term…
Abstract
In one embodiment, detecting a failure mode of a first communication link on a first port, selecting a second communication link on a second port associated with the first port, and transmitting a profile information associated with the second port are provided.
Claims19
A method, comprising:
- by a first switch:
- establishing a first communication link with a second switch between a first port of the first switch and a first port of the second switch;
- designating the first communication link as a principal link;
- establishing a second communication link with the second switch between a second port of the first switch and a second port of the second switch;
- designating the second communication link as a redundant link;
- detecting a failure of the first communication link;
- designating the second communication link as the principal link in response to the failure;
- transmitting profile information associated with the second port of the first switch to the second switch over the second communication link;
- detecting a recovery of the first communication link;
- and
- designating the first communication link as the redundant link in response to the recovery.
8 more elements
A system, comprising:
- an upstream switch having a first upstream port and a second upstream port;
- and
- a downstream switch having a first downstream port and a second downstream port, the downstream switch being communicatively coupled to the upstream switch over a first communication link between the first upstream port and the first downstream port and a second communication link between the second upstream port and the second downstream port;
- wherein the downstream switch is configured to:
- designate the first communication link as a principal link;
- designate the second communication link as a redundant link;
- detect a failure of the first communication link;
- designate the second communication link as the principal link in response to the failure;
- transmit profile information associated with the second downstream port to the upstream switch over the second communication link;
- detecting a recovery of the first communication link subsequent to the failure;
- and
- designate the first communication link as the redundant link in response to the recovery.
9 more elements
A switch, comprising:
- a first port;
- a second port;
- and
- control circuitry configured to:
- establish a first communication link with an upstream switch between the first port and a first upstream port of the upstream switch;
- designate the first communication link as a principal link;
- establish a second communication link with the upstream switch between the second port and a second upstream port of the upstream switch;
- designate the second communication link as a redundant link;
- detect a failure of the first communication link;
- designate the second communication link as the principal link in response to the failure;
- transmit profile information associated with the second port to the upstream switch over the second communication link;
- detect a recovery of the first communication link;
- and
- designate the first communication link as the redundant link in response to the recovery.
11 more elements
Dependencies are inferred from the claim text.