Extreme Networks, Inc.

Charles Frederick Burton, Iii

Tulasi Veguru

Meera Siva Kasinathan

Donald Bruce Grosser, Jr

Cedell Adam Alexander, Jr

Christopher J Young

John Kevin Frick

Olen Lee Stokes, Jr

A method is provided for pseudo wire processing in a packet forwarding device in which a packet is processed based on whether the ports through which the packet is transmitted are real or pseudo wire ports. The inbound and outbound port information is encoded using a predefined range of index values such that index values falling within one range of values are used for passing real port information, and index values falling within another range of values are used for passing pseudo wire port information. The index values are used in a manner that facilitates efficient performance of pseudowire processing for the packets in the switch fabric component of the packet forwarding device.

Pseudo wire processing in a packet forwarding device

Packet modification is performed in the switch fabric by selecting a conditional command belonging to a set of commands for modifying a packet. The set of commands is identified based on an index value, and selecting a conditional command belonging to the set of commands is based on a mask value, where the index and mask values are determined based on data in the packet undergoing modification, such as the packet's source and destination, or incoming label. Among other advantages, controlling packet modification in the switch fabric through selecting a conditional command belonging to a set of commands allows multiple sets of commands to be replaced with a single set of commands, resulting in a more efficient use of available external memory.

Command selection in a packet forwarding device

Methods and systems for providing redundant network connectivity across a network using a tunneling protocol by dynamically moving a TLS tunnel between master and slave switches based on relative connectivity provided by the switches are disclosed. A standby routing protocol executes on the master and slave switches to monitor the relative connectivity. In response to detecting that the relative connectivity of the slave switch exceeds that of the master switch, the standby routing protocol reverses the roles of the master and slave switches, thus moving the TLS tunnel to the new master switch.

Methods and systems for providing redundant connectivity across a network using a tunneling protocol

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Cary, NC, United States of America

Charles Frederick Burton, Iii