Cisco Technology, Inc.

Yen Teresa Nguyen

Manrique Brenes

Aijaz Pathan

Marc Alan Bennett

Craig Zimmerman

Rachel C Neal

Richard G Jeske

Jay S Shah

Matthew D Grimm

Patrick Edward Jackson

Jonathan Harrod

Vijay Srinivasan

William C Johnson

Charles Wu

Arun Srinivasan

James E Collinge

Daniel Nix

James E Colinge

Earl W Boone

Craig A Zimmerman

Manrique J Brenes

Methods and systems according to one or more embodiments establish communication across separate IP domains that are on the same layer 2 bridged domain. In an embodiment, a method includes receiving a configuration of a first IP address of a first node on a first side of a switch and a second IP address of a second node on a second side of the switch, wherein the first and second IP addresses are of different domains and are to be translated in each direction with respect to the switch, wherein the switch further comprises an integrated block adapted to do translation at line rate. Based on the configuration, the method also includes modifying, by the switch, packets of an applicable protocol in each direction so that the first and second IP addresses are changed for each domain such that either side of the switch acts as if an opposite side is on the same domain so that layer 2 communication is established.

Method and apparatus to establish communication for layer 2 switched packets with Network Address Translation (NAT)

Method and apparatus to establish communication for layer 2 switched packets with network address translation (NAT)

Consistent with embodiments of the present invention, a method may be provided comprising receiving a search string corresponding to a desired node comprising a target parameter, a policy parameter, and a class parameter. The target parameter may be referenced with a target index table to determine which interfaces to search. The policy parameter may be referenced with a policy index table to determine a node-id of a policy node corresponding to the policy parameter. A level for the desired node may be determined based on the node-id. The class parameter may be referenced with the determined node-id with a class index table to access a bucket location. The desired node may then be searched for with the determined node-id at the determined level.

Method and apparatus for efficiently organizing hierarchical QoS policies

According to one embodiment, an Ethernet switch includes a plurality of ports operable to receive and transmit Ethernet traffic. The Ethernet switch also includes system monitoring software operable to receive an indication from a user of a plurality of fault conditions for which generation of an alarm is desired. The system monitoring software is also operable to monitor the Ethernet switch for the plurality of fault conditions and generate a signal indicating a particular one of the plurality of fault conditions has occurred. The Ethernet switch further includes at least one relay responsive to the generated signal that is operable to turn on a respective alarm indicating a particular fault condition has occurred.

Ethernet switch with configurable alarms

According to one embodiment of the invention a rugged Ethernet switch includes a housing and a passive cooling system associated with the housing and being devoid of fans as operable to cool the Ethernet switch. Ethernet switch also includes software operable to perform at least one of the functions selected from the group consisting of multiple spanning, rapid spanning, cluster management and IGMP snooping and querying. According to another embodiment, a rugged Ethernet switch includes a housing having a plurality of perforations formed therein for cooling the Ethernet switch. The switch also includes a passive cooling system be devoid of fans and that is operable to cool the Ethernet switch. A temperature sensor is operable to measure a temperature of the Ethernet switch is included as is an alarm software responsive to the temperature sensor and operable to initiate an alarm when a measured temperature of the Ethernet switch exceeds a particular limit.

Industrial ethernet switch

A method and system for real-time bit error ratio determination is disclosed. According to one embodiment, a method is provided in which an operational link error rate of a link is determined and then used to estimate a real-time physical link error rate of the link. In another embodiment, the operational link error rate is determined in response to the detection of an operational link error using a cyclic redundancy check.

Method and system for real-time bit error ratio determination

A system and method determines the environmental configuration of telecommunications equipment having interchangeable components to provide an alarm if an improper environmental configuration exists. A configuration engine associated with the network management system of the telecommunications equipment determines the environmental rating of components added to or removed from the telecommunications equipment by querying flash memory associated with the component. If components designed for controlled environmental conditions and components designed for uncontrolled environmental conditions are both present in the telecommunications equipment, then component engine 30 sets the alarm to alert the user of an improper environmental configuration.

System and method for determining the environmental configuration of telecommunications equipment

A system and method determines the environmental configuration of telecommunications equipment having interchangeable components to provide an alarm if an improper environmental configuration exists. A configuration engine associated with the network management system of the telecommunications equipment determines the environmental rating of components added to or removed from the telecommunications equipment by querying flash memory associated with the component. If components designed for controlled environmental conditions and components designed for uncontrolled environmental conditions are both present in the telecommunications equipment, then component engine sets the alarm to alert the user of an improper environmental configuration.

Growing community of inventors

Austin, TX, United States of America

Yen Teresa Nguyen