Cisco Technology, Inc.

Juniper Networks, Inc.

Avneesh Sachdev

Rex Emmanuel Fernando

Anthony Joseph Li

Hasmit S Grover

Henk H W Smit

Nischal Sheth

Hannes Gredler

Nitin Bahadur

Harish Sitaraman

Derek Man-Kit Yeung

Dheerendra Talur

Ambrose Kwong

In general, techniques are described for providing extended administrative groups in networks. A network device comprising an interface and a control unit may implement the techniques. The interface receives a routing protocol message that advertises a link. This message includes a field for storing first data associated with the link in accordance with the routing protocol. The field is defined by the routing protocol as a field having a different function from an administrative group field defined by the same routing protocol. The control unit determines that this field has been repurposed to store second data, wherein this second data specifies an extended administrative group for the link different from those that may be specified by the administrative group field. The control unit then updates routing information to associate the advertised link with the extended administrative group and performs path selection to select paths based on the updated routing information.

Providing extended administrative groups in computer networks

A method for tracking a transmission status of one or more data elements to one or more devices. In one example, the method includes providing a list including one or more devices and one or more data elements; processing the list to determine a data element of the one or more data elements to transmit to a device of one of the one or more devices; and upon successfully transmitting the data element to the device, adjusting the list so that the list indicates that the device has received the transmitted data element. In this manner, the status of whether a particular data element has been sent to a particular device can be easily derived from the list.

Method for tracking transmission status of data to entities such as peers in a network

A router is described that includes a routing table containing route information and a module to evaluate a route and detect a loop path associated with the route using the routing table. A process is described to detect and eliminate routing loops associated with recursive routes in a routing table, so as to provide a routing table that will be loop free.

Methods and apparatus for providing loop free routing tables

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San Jose, CA, United States of America

Avneesh Sachdev