Transitioning a Virtual Interface from One Tunnel to Another Tunnel
First Claim
1. A packet switch operating method comprising:
- provisioning a plurality of tunnels on the packet switch by associating each of the plurality of tunnels with a packet switch port and by configuring the packet switch to modify packets relayed by the tunnel to include a transport identifier associated with the tunnel, the plurality of tunnels being configured to relay packets when permitted by a tunnel index, the plurality of tunnels and the tunnel index being associated with a virtual interface;
permitting a first tunnel of the plurality of tunnels to relay packets by configuring the tunnel index to indicate the first tunnel, the tunnel index indicating only one tunnel at a time; and
enabling a second tunnel of the plurality of tunnels to relay packets by configuring the tunnel index to indicate the second tunnel, thereby preventing the first tunnel from relaying packets.
1 Assignment
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Accused Products
Abstract
Packet switch operating methods and packet switches provision a plurality of tunnels on a packet switch by associating each of the plurality of tunnels with a packet switch port and by configuring the packet switch to modify packets relayed by the tunnel to include a transport identifier associated with the tunnel. The tunnels of the plurality relay packets when permitted by a tunnel index. The plurality of tunnels and the tunnel index are associated with a virtual interface. The methods and packet switches also permit a first tunnel of the plurality of tunnels to relay packets by configuring the tunnel index to indicate the first tunnel. The tunnel index indicates only one tunnel. The methods and packet switches also enable a second tunnel of the plurality of tunnels to relay packets by configuring the tunnel index to indicate the second tunnel, thereby preventing the first tunnel from relaying packets.
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Citations
34 Claims
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1. A packet switch operating method comprising:
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provisioning a plurality of tunnels on the packet switch by associating each of the plurality of tunnels with a packet switch port and by configuring the packet switch to modify packets relayed by the tunnel to include a transport identifier associated with the tunnel, the plurality of tunnels being configured to relay packets when permitted by a tunnel index, the plurality of tunnels and the tunnel index being associated with a virtual interface; permitting a first tunnel of the plurality of tunnels to relay packets by configuring the tunnel index to indicate the first tunnel, the tunnel index indicating only one tunnel at a time; and enabling a second tunnel of the plurality of tunnels to relay packets by configuring the tunnel index to indicate the second tunnel, thereby preventing the first tunnel from relaying packets. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A packet switch operating method comprising:
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transmitting packets associated with a first virtual interface on a port via a first tunnel and transmitting packets associated with a second virtual interface on the port via a second tunnel; disabling the first tunnel; after disabling the first tunnel, transmitting subsequent packets associated with the first virtual interface via a third tunnel instead of the first tunnel; and after disabling the first tunnel, maintaining transmission of subsequent packets associated with the second virtual interface on the port via the second tunnel. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A packet switch operating method comprising:
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storing an association between a virtual interface and a tunnel index, the tunnel index having a value associated with a first tunnel, the first tunnel being associated with a first packet switch port and having a first transport identifier; egressing packets associated with the virtual interface via the first tunnel on the first packet switch port, the packets including the first transport identifier; modifying the tunnel index to have a value associated with a second tunnel, the second tunnel being associated with a second packet switch port and a second transport identifier; and egressing packets received subsequent to changing the tunnel index that are associated with the virtual interface via the second tunnel on the second packet switch port, the packets including the second transport identifier. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification