Ericsson Ab

Telefonaktiebolaget Lm Ericsson (publ)

Arunkumar M Desigan

Peter Arberg

Kishore Krishna Seshadri

Robert G Kilfoyle

Ganesan Vivekanandan

Anubhav Gupta

Arun Sharma

Brian Russell Kean

Vikram Guleria

Ravindra Narayan

Srikanth Narayanan

Matias Cavuoti

Sudhagar Chinnaswamy

Rajeev Kochhar

Che-Lin Ho

Ganesan Vivekandan

Mukund Srinivasan

Sanjeev K Verma

Exemplary techniques for architecture-independent dynamic flow learning in a packet forwarder are described. A packet forwarder includes a plurality of forwarding threads and a plurality of provisioning threads, and can implement three functional blocks to learn new flows&#x2014;an admission control block, a forwarding database building block, and a notification path block. An admission control module can control the ability for forwarding threads to place flow operation requests in operation queues. Provisioning threads independently manage particular operation queues, and can update corresponding portions of a control database and a forwarding database. Flow operation notifications can be managed through notification queues, which can be drained back into the operation queues for the provisioning threads to later process. The packet forwarder thus can benefit from a highly-parallel, highly-efficient software-based approach to flow learning operations that does not require specialized hardware support.

Techniques for architecture-independent dynamic flow learning in a packet forwarder

Methods and apparatuses for a network element having DHCP proxy functionality are described. According to one embodiment, an exemplary method includes receiving, at a network element, a request for an IP address from a subscriber, in response to the request, on behalf of the subscriber, communicating with one or more IP address providers over a network to process the request, and responding to the subscriber with respect to the request as if the network element is an IP address provider, on behalf of the one or more IP address providers.

DHCP proxy in a subscriber environment

Line cards receive control packets and perform a hierarchical rate limiting on those control packets. A set of identifier keys are extracted from the control packets and the protocol of those control packets are determined. At a first level, the control packets are rate limited per unique set of identifier keys per protocol. Those packets which fail the first rate limiting level are dropped. Those packets which pass the first rate limiting level are rate limited at a second level per protocol type. Those packets which fail the second level rate limiting are dropped while those packets which pass the second level rate limiting are sent to the control card for further processing.

Hierarchical rate limiting of control packets

Methods and apparatuses for providing clientless IP services for subscribers on a network interface that does not require either explicit client subnet configurations or explicit routes from the interface to the client subnets.

Methods and apparatuses for dynamically provisioning a dynamic host configuration protocol (DHCP) client as a clientless internet protocol services (CLIPS) subscriber on a last-resort interface

An adaptive method and apparatus for accurate network traffic volume limit reporting including receiving a network traffic volume limit for each subscriber based on the subscriber's level of service and reporting the network traffic volume on a more frequent basis for subscribers who are approaching their network volume limit.

Adaptive method and apparatus for adjusting network traffic volume reporting

Methods and apparatuses for process a crossconnect switchover in a network element are described. According to one embodiment, an exemplary method includes synchronizing state information regarding broadband subscriber sessions of one or more circuits of a network element between one or more hub devices of an active control card and a standby control card of the network element, and in response to a crossconnect switchover, starting up one or more sessions associated with the one or more hub devices of the standby control card using the synchronized information, such that the one or more sessions are started up as if they are restarted. Other methods and apparatuses are also described.

Switchover for broadband subscriber sessions

Growing community of inventors

Santa Clara, CA, United States of America

Arunkumar M Desigan