1
Rana Dayal, Donald B Grosser, Michael D Mroz, Daniel L Schweitzer: Methods and systems for hitless switch management module failover and upgrade. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, January 27, 2009: US07483370 (139 worldwide citation)

Methods and systems for hitless switch management module failover and upgrade are disclosed. According to one method, a master switch management module participates in network protocols and performs packet forwarding operations. The master switch management module distributes protocol state and pack ...


2
Donald B Grosser Jr, Charles E Hudnall Jr, Desikan Saravanan, Michael Yip: Methods and systems for associating and translating virtual local area network (VLAN) tags. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, July 7, 2009: US07558273 (83 worldwide citation)

Methods and systems for associating and translating VLAN tags are disclosed. In one implementation, multiple different member VLAN tags are associated with a translation VLAN tag. When a frame addressed to an unknown MAC address and containing one of the member VLAN tags is received, the frame is fl ...


3
Cedell A Alexander, Donald B Grosser: Fault tolerant automatic protection switching for distributed routers. Extreme Networks, Blakely Sokoloff Taylor & Zafman, October 18, 2005: US06956816 (38 worldwide citation)

A working router is coupled to a SONET add-drop multiplexor (ADM) through a working line and a protection router is coupled to the ADM through a protection line. The routers are coupled to each other by a separate side-band connection and comprise a virtual router from the perspective of the neighbo ...


4
John Kevin Frick, Donald B Grosser, Michael D Mroz: Methods and systems for hitless restart of layer 3 packet forwarding. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, April 22, 2008: US07362700 (32 worldwide citation)

A method for hitless restart of layer 3 packet forwarding includes replicating some but not all state information from a master management service module to a slave management service module. The master management service module builds a layer 3 routing table by participating in layer 3 routing prot ...


5
Donald B Grosser, Hood L Richardson Jr: Methods, systems, and computer readable media for stateless load balancing of network traffic flows. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, July 30, 2013: US08499093 (23 worldwide citation)

Methods, systems, and computer readable media for performing stateless load balancing of network traffic flows are disclosed. According to one aspect, the subject matter described herein includes a method for performing stateless load balancing of network traffic flows. The method occurs at a layer ...


6
Donald B Grosser, Michael D Mroz: Methods and systems for hybrid hardware- and software-base media access control (MAC) address learning. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, February 9, 2010: US07660259 (23 worldwide citation)

Methods and systems for hybrid layer 2 address learning are disclosed. In one method, a packet with a layer 2 source address is received. Next, it is determined whether to implement hardware-based learning or software-based learning based on a classification of the received packet. In response to de ...


7
Donald B Grosser Jr, Shankara Ramamurthy: Methods, systems, and computer readable media for improved multi-switch link aggregation group (MLAG) convergence. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, May 20, 2014: US08730963 (10 worldwide citation)

The subject matter described herein includes methods, systems, and computer readable media for improved multi-switch link aggregation group (MLAG) convergence. According to one aspect of the subject matter described herein, a system for improved multi-switch link aggregation group (MLAG) convergence ...


8
Donald B Grosser, Edward J Rovner, Olen L Stokes: Methods, systems, and computer program products for controlling updating of a layer 3 host table based on packet forwarding lookup miss counts. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, May 25, 2010: US07724734 (10 worldwide citation)

Methods, systems, and computer program products for controlling updating of a layer 3 host table based on packet forwarding miss counts are disclosed. According to one method, layer 3 packets are routed using at least one of a layer 3 host table containing entries corresponding to remote hosts and a ...


9
Donald B Grosser Jr, Michael D Mroz, Hood L Richardson: Methods, systems, and computer readable media for conserving multicast port list resources in an internet protocol (IP) packet forwarding device. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, June 26, 2012: US08208418 (8 worldwide citation)

The subject matter described herein includes methods and systems for conserving multicast port lists in an IP packet forwarding device. According to one embodiment, the method includes providing an IP multicast packet port data structure containing at least a first port list and a second port list. ...


10
Donald B Grosser, Edward J Rovner, Olen L Stokes: Methods, systems, and computer program products for routing packets at a multi-mode layer 3 packet forwarding device. Extreme Networks, Jenkins Wilson Taylor & Hunt P A, November 30, 2010: US07843927 (3 worldwide citation)

The subject matter described herein includes methods, systems, and computer program products for routing packets at a multi-mode layer 3 packet forwarding device. According to one aspect, the subject matter described herein includes operating a first of at least two modules in a host mode, and opera ...