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US 2014/0226674 A1Published application
Vpls n-pe redundancy with stp isolation
AssigneeCisco Technology, Inc.
InventorPatrice BELLAGAMBA
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Abstract
In one embodiment, a system includes a first network, a second network, and a core network connecting the first network to the second network. The first network includes a first set of two or more network devices, wherein the first network has a first spanning tree associated therewith. Similarly, the second network includes a second set of two or more network devices, wherein the second network has a second spanning tree associated therewith, wherein the second spanning tree is separate from the first spanning tree.
Claims16
A system comprising:
- a first network device of a first computer network, the first network device being connected to a core network;
- wherein the first network device is connected to a second network device of the computer network over an inter-device link, wherein traffic to or from the core network cannot be transmitted on the inter-device link;
- and
- wherein the first network device is configured to:
- send a first packet to the second network device over the inter-device link indicating that the first network device is in an active state, thereby causing the second network device to block traffic between the second network device and the core network;
- receive a second packet from the second network device in response to the first packet, the second packet indicating that the second network device is in an inactive state;
- and
- in response to receiving the second packet, forward traffic to and/or from the core network.
5 more elements
A method comprising:
- by a first network device of a computer network, the first network device being connected to a core network:
- sending a first packet to a second network device of the computer network over an inter-device link indicating that the first network device is in an active state, thereby causing the second network device to block traffic between the second network device and the core network;
- receiving a second packet from the second network device in response to the first packet, the second packet indicating that the second network device is in an inactive state;
- and
- in response to receiving the second packet, forwarding traffic to and/or from the core network;
- wherein traffic to or from the core network cannot be transmitted on the inter-device link.
3 more elements
Dependencies are inferred from the claim text.