Cisco Technology, Inc.

Walter Song

Samar Sharma

Biju Mathews Mammen

Avni Baveja

Mitali Parthasarathy

Chao Feng

Derek L Huckaby

Ashish Ashish Attarde

Christopher Jon Bucci

Embodiments of the present disclosure enable monitoring network traffic on multiple Virtual Device Context (VDC) elements of a switch using a single NAM module. To that end, if a monitored network element supports contexts (i.e. VDC elements), a NAM module could be configured to seamlessly drive the move of the data port interfaces (at the managed device) from one context to the other. After the move of the data ports that support SPAN destination traffic flow to the target VDC is complete, these SPAN destination ports may be configured to be able to receive SPAN data traffic.

Methods and systems for a network appliance module enabling dynamic VDC aware span

A method for monitoring flow attributes at a network node comprises detecting first information indicative of transmission of a packet through the network node. The first information is discernible from information contained within the packet. The method also comprises determining that the packet is not part of an existing flow and generating, in a flow cache memory, a new flow entry corresponding to the packet. The method further comprises receiving second information associated with the transmission of the packet through the network node. The second information is contained in a forwarding information base (FIB) stored in the network node and cannot be discerned from information contained within the packet. The method also comprises writing, in the flow cache memory, at least a portion of the second information to the new flow entry corresponding to the packet.

Portable system for monitoring network flow attributes and associated methods

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San Jose, CA, United States of America

Walter Song