Arista Networks, Inc.

John Peach

Subhachandra Chandra

Harold Wang

Robert Murray Odear, Iii

Martin Hull

Timur Cheremisov

A flash definition specifying a flashing sequence for a status indicator of a multi-lane port is stored on a device. In operation, the status indicator is lit, following the flashing sequence, to indicate a current lane state (in a Port/Lane Signaling Mode) or interface/channel state (in an Interface/Channel Signaling Mode). The flashing sequence may begin with a preamble, indicating a start of the flashing sequence. The device may have different multi-lane ports, each having one or more status indicators configured for indicating states of multiple lanes or a state of an interface having a multiple of component lanes. Flashing sequences for these ports are synchronizable (to the port having the largest number of lanes or, in the Interface/Channel Signaling Mode, the largest number of configured interfaces on that port). The lanes of a multi-lane port may operate at the same or different speeds and may be bundled into interfaces/channels.

System and method for signaling interface status using a single indicator

A method and apparatus of a network element that keeps a port of the network element up in a split port configuration is described. In an exemplary embodiment, the network element receives an indication of a link loss on a receive interface of the port, wherein the port includes the receive interface and a transmit interface. In addition, the receive interface is coupled to a first device over a first link, and the transmit interface is coupled to a second device over a second link. Furthermore, the network element performs an operation of the port such that a link coupled to a transmit interface of the port remains up. The network element additionally suppresses receive faults that are received on the receive interface.

System and method of using undirectional links for tap aggregation

A system, method, and associated apparatus for continuous measurement of transit latency in individual data switches and multi-device topologies is disclosed, which enables an accurate measure of real-word latency on production networks by applying a time stamp to production network data on ingress to a network element and determining a traversal time by capturing the time stamp on egress from the network element. In one embodiment, time stamps applied to network data are removed on egress to avoid undesirable packet growth across multiple hops of the network. Timing information on data flow through the data/forwarding plane of each network node of a production network can be gathered without the use of test harnesses, injected network data, or dedicated ports.

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Maidenhead, United Kingdom

John Peach