Patent application number | Description | Published |
20140192632 | LOOP AVOIDANCE FOR EVENT-DRIVEN VIRTUAL LINK AGGREGATION - Embodiments of the invention relate to virtual link aggregation. One embodiment includes forming one or more virtual links using physical links connecting a first networking element, a second networking element and a third networking element. A first trigger status indication is used for blocking network traffic for avoiding traffic loops occurring over the one or more virtual links. | 07-10-2014 |
20140192635 | START-UP DELAY FOR EVENT-DRIVEN VIRTUAL LINK AGGREGATION - Embodiments of the invention relate to virtual link aggregation. One embodiment includes a system including a first aggregation switch. A second aggregation switch is connected to the first aggregation switch with a first link. An access switch is connected to the first aggregation switch with a second link and the second aggregation switch with a third link. The first access switch establishes a first virtual link with the first aggregation switch and the second aggregation switch. A first detection module is connected with the first aggregation switch. The first detection module maintains multiple networking ports in a first disabled state, determines a link-status of the first link, and activates a first event upon the determination of a first status indication for the first link, and switches at least one of the multiple networking ports to a first enabled state upon detecting the first event. | 07-10-2014 |
20140192636 | START-UP DELAY FOR EVENT-DRIVEN VIRTUAL LINK AGGREGATION - Embodiments of the invention relate to virtual link aggregation. One embodiment includes preventing network traffic loss upon rebooting of a first networking device based on: maintaining a first group of networking ports in a first disabled state, determining a link-status of a first link between the first networking device and a second networking device, activating a delay timer for delaying the rebooting of the first network device upon the determination of a first status indication for the first link, and switching at least one of the first group of networking ports to a first enabled state upon expiration of the delay timer. | 07-10-2014 |
20140192817 | Virtual link aggregation using state machine - Physical links between an access switch and a pair aggregation switches are aggregated into a virtual link aggregation group (vLAG). Each aggregation switch is a local switch to itself and a remote switch to the other aggregation switch. Each aggregation switch maintains a state machine including initialization, local-up, remote-up, and formed states. In the initialization state, the physical link between the access switch and each aggregation switch is down, and the vLAG is down. In the local-up state, just the physical link between the access switch and the local switch is up, and the vLAG is down. In the remote-up state, just the physical link between the access switch and the remote switch is up, and the vLAG is down. In the formed state, the physical link between the access switch and each aggregation switch is up, and the vLAG is up. | 07-10-2014 |
20140195694 | LOOP AVOIDANCE FOR EVENT-DRIVEN VIRTUAL LINK AGGREGATION - Embodiments of the invention relate to virtual link aggregation. One embodiment includes forming one or more virtual links using physical links connecting a first networking element, a second networking element and a third networking element. A first trigger status indication is used for blocking network traffic for avoiding traffic loops occurring over the one or more virtual links. | 07-10-2014 |
20140211607 | ACTIVE IP FORWARDING IN AN EVENT DRIVEN VIRTUAL LINK AGGREGATION (VLAG) SYSTEM - In one embodiment, a method for managing virtual link aggregation (vLAG) includes coupling a first networking switch with a second networking switch using an interswitch link (ISL), wherein the first networking switch is positioned at a boundary between Layer-2 (L2) and Layer-3 (L3), and wherein the second networking switch is positioned at the boundary between L2 and L3; creating a virtual link aggregation (vLAG) comprising connections between the first and second networking switches and an access switch in L2, wherein each networking switch comprises a virtual router redundancy protocol (VRRP) module; and interacting and modifying a VRRP state machine to perform active internet protocol (IP) forwarding when a connection between one of the networking switches and the access switch fails or one of the networking switches does not function properly. | 07-31-2014 |
20140211663 | SPANNING TREE PROTOCOL (STP) IMPLEMENTATION ON AN EVENT DRIVEN VIRTUAL LINK AGGREGATION (VLAG) SYSTEM - In one embodiment, a method for providing virtual link aggregation (vLAG) includes forming a third logical port using a first logical port and a second logical port; determining first networking protocol state information corresponding to the third logical port using the first networking system, where the first networking protocol state information includes an indication of whether the first networking system is capable of communicating with the second networking system via an interswitch link (ISL) The method also includes storing a first networking protocol state information corresponding to the third logical port using the first networking system; communicating the first networking protocol state information to the second networking system via the and storing the first networking protocol state information using the second networking system. | 07-31-2014 |
20140211792 | ACTIVE IP FORWARDING IN AN EVENT DRIVEN VIRTUAL LINK AGGREGATION (VLAG) SYSTEM - In one embodiment, a networking system includes a first networking switch positioned at a boundary between Layer-2 (L2) and Layer-3 (L3), the first networking switch including a first virtual router redundancy protocol (VRRP) module, a second networking switch connected to the first networking switch via an interswitch link (ISL), the second networking switch being positioned at the boundary between L2 and L3 and including a second VRRP module, and an access switch positioned in L2, the access switch being capable of being connected to the first and second networking switches in a virtual link aggregation (vLAG), the first VRRP module being adapted for performing active internet protocol (IP) forwarding when the second networking switch is not performing active IP forwarding, and the second VRRP module being adapted for performing active IP forwarding when the second networking switch is not performing active IP forwarding. | 07-31-2014 |
20140215084 | SPANNING TREE PROTOCOL (STP) IMPLEMENTATION ON AN EVENT DRIVEN VIRTUAL LINK AGGREGATION (VLAG) SYSTEM - In one embodiment, a system includes a first networking system and a second networking system, each system having a plurality of physical networking ports, a controller, and a memory subsystem, with a first logical port being formed using one or more of the first system's plurality of physical networking ports, a second logical port being formed using one or more of the second system's plurality of physical networking ports, logic adapted to form a third logical port using the first logical port and the second logical port, wherein the first system's controller includes logic adapted to store a first networking protocol state information corresponding to a third logical port using the first memory subsystem and to communicate the first networking protocol state information to the second networking system, with the second system's controller being adapted to store the first networking protocol state information. | 07-31-2014 |
20150055658 | REFLECTIVE RELAY PROCESSING ON LOGICAL PORTS FOR CHANNELIZED LINKS IN EDGE VIRTUAL BRIDGING SYSTEMS - Embodiments of the invention relate to reflective relay (RR) processing on logical ports for channelized links in edge virtual bridging (EVB) systems. One embodiment includes providing a virtual edge bridge (VEB) mode and a virtual Ethernet port aggregator (VEPA) mode in an EVB system on a same port of a physical switch. RR capability per channel is negotiated between a server and the physical switch in the EVB system. RR per channel is supported on the physical switch of the EVB system using RR setting information per channel. | 02-26-2015 |