Cisco Technology, Inc.

Stephen Patrick Kolecki

Krishna Kumar Vavilala

Matthew Todd Lawson

Peter Gunadisastra

Robert A Hall

Chris Desiniotis

Jason Visneski

Jason Allen Marinshaw

Daniel Lee Chaplin

Sai Kishore Vavilala

Embodiments generally provide techniques for waking up a plurality of network devices from a power saving mode via layer 1 (L1) signaling. Embodiments include entering a power saving mode at a first network device, wherein logic for processing layer 2 and higher data is inactive during the power saving mode and receiving, while the first network device is in the power saving mode, a L1 bit stream from a second network device connected to the first network device. Additionally, embodiments include, upon determining that a predefined code is present within the received L1 bit stream, exiting the power saving mode at the first network device and transmitting a second L1 bit stream containing the predefined code to a third network device.

Enabling deep sleep and power saving through L1 signaling on stack interface

A method for performing packet reorder processing is disclosed. The method comprises receiving, at a packet receive buffer, a data packet, the packet receive buffer comprising a plurality of N-sized pages. The method also comprises storing the received data packet across a plurality of pages of the packet receive buffer. The method further comprises writing, at storage of each of the plurality of pages, a pointer to a next page in which a subsequent portion of the data packet is stored. The method also comprises transmitting the pointer to a ring buffer. The method further comprises calculating an offset to the ring based on a sequence number of the corresponding packet, and storing the pointer to a first page in the calculate offset of the ring buffer.

Systems and methods for performing packet reorder processing

In accordance with an example embodiment, there is disclosed herein, an apparatus having first and second interfaces for communicating on a ring network. Upon receipt of a first signal on the first interface indicating a break in the ring, the apparatus stops forwarding packets onto the ring. Upon receipt of a second signal on the second port indicating a break in the ring, the apparatus forwards all packets destined for the ring network onto the ring network via both the first and second interfaces.

Hardware based convergence for a ring network

Various embodiments provide an apparatus and method for configuring a shared data rate in a stackable interface network. An example embodiment includes detecting a data cable identifier, the data cable identifier being indicative of a first data rate capacity associated with a data cable identified by the data cable identifier; propagating information indicative of the first data rate capacity to at least one of a plurality of network devices connected via stackable network interfaces; receiving information indicative of a second data rate capacity from at least one of the plurality of network devices; determining an appropriate shared data rate from the information indicative of the first data rate capacity and the information indicative of the second data rate capacity; and configuring at least one of the plurality of network devices to communicate via a stackable network interface at the shared data rate.

Multi-speed stack interface

A method for determining a status of a buffer for use in converting between a standard SONET and a non-standard SONET frame is presented. The method determines the buffer's almost empty or almost full status based on a length of a transport gap of the non-standard SONET frame, wherein the standard SONET frame is formatted as a STS-N, and the transport gap of the non-standard SONET frame has been rearranged to provide a longer non-data region at the beginning of the non-standard SONET frame. The method then uses the buffer's almost empty or almost full status to trigger positive or negative stuffing. The method is used for maintaining communications when using asymmetrical gapping structures.

Growing community of inventors

Austin, TX, United States of America

Stephen Patrick Kolecki