Robert A Engebretson

US Patent:

7308001, Dec 11, 2007

Filed:

Nov 15, 2002

Appl. No.:

10/295359

Inventors:

William Collette - Stillwater MN, US
Bret Ketchum - Anoka MN, US
Richard Kelley - Corcoran MN, US
Robert Engebretson - Medina MN, US
Mark Moran - Woodbury MN, US
Mike Morandi - St. Paul MN, US

Assignee:

Computer Network Technology Corporation - Minneapolis MN

International Classification:

H04J 3/16

US Classification:

370471, 370473

Abstract:

A storage router and related method are presented for combining multiple Fibre Channel frames together into a single IP datagram for tunneling transmission over an Internet protocol network. The storage router operates by storing incoming Fibre Channel frames in a Fibre Channel frame buffer. When there is sufficient data in the buffer, multiple Fibre Channel frames are taken from the buffer and combined into a single IP datagram. The number of Fibre Channel frames to be combined can be established through a variety of tests, including total bytes of data, number of frames, or through a time-out mechanism. The network layer then fragments the datagram into data link level frames, such as 1500 byte Ethernet frames. When the IP datagram arrives at the final destination, the segmented IP datagram is reconstructed, and the multiple Fibre Channel frames are extracted from the IP datagram and passed on to the recipient Fibre Channel network.

US Patent:

20030177243, Sep 18, 2003

Filed:

Feb 19, 2003

Appl. No.:

10/368682

Inventors:

William Collette - Stillwater MN, US
Mark Moran - Woodbury MN, US
Robert Engebretson - Medina MN, US
Brian Johnson - St. Michael MN, US
Mike Morandi - St. Paul MN, US

International Classification:

G06F015/16

US Classification:

709/227000, 370/464000

Abstract:

A storage router and related method are presented for combining multiple host frames, such as Fibre Channel frames, together into a single datagram for tunneling transmission over an IP or similar network. The storage router operates by storing incoming host frames in a host frame buffer. When there is sufficient data in the buffer, multiple host frames are batched together, compressed, and converted into an IP datagram. The number of host frames to be batched together can be established through a variety of tests, including total bytes of data, number of frames, or through a time-out mechanism. The network layer then fragments the datagram into data link level frames, such as 1500 byte Ethernet frames. When the datagram arrives at the final destination, the segmented datagram is reconstructed, decompressed, and the multiple host frames are then extracted and passed on to the recipient host frame network.

US Patent:

20080095192, Apr 24, 2008

Filed:

Feb 19, 2004

Appl. No.:

10/546411

Inventors:

William C. Collette - Stillwater MN, US
Mark Moran - Woodbury MN, US
Robert Engebretson - Medina MN, US
Mike Morandi - St. Paul MN, US
Brian Johnson - St. Michael MN, US

Assignee:

McData Corporation - Brookfield CT

International Classification:

H04J 3/24

US Classification:

370473

Abstract:

A storage router and related method are presented for combining multiple host frames, such as Fibre Channel frames, together into a single datagram for tunneling transmission over an IP or similar network. The storage router operates by storing incoming host frames in a host frame buffer. When there is sufficient data in the buffer, multiple host frames are batched together, compressed, and converted into an IP datagram. The number of host frames to be batched together can be established through a variety of tests, including total bytes of data, number of frames, or through a time-out mechanism. The network layer then fragments the datagram into data link level frames, such as 1500 byte Ethernet frames. When the datagram arrives at the final destination, the segmented datagram is reconstructed, decompressed, and the multiple host frames are then extracted and passed on to the recipient host frame network.

US Patent:

20110225303, Sep 15, 2011

Filed:

Sep 13, 2010

Appl. No.:

12/880495

Inventors:

Robert Grant Engebretson - Medina MN, US

Assignee:

Brocade Communications Systems, Inc. - San Jose CA

International Classification:

G06F 15/16

US Classification:

709227

Abstract:

An IP gateway device establishes distinct TCP sessions within a single FCIP tunnel, each TCP session being designated for a different priority of service (e.g., high, medium, low), plus a control stream. Each TCP session has its own TCP stack and its own settings for VLAN Tagging (IEEE 802.1Q), quality of service (IEEE 802.1P) and Differentiated Services Code Point (DSCP). By distributing data streams assigned to different priorities of service into different TCP sessions within the FCIP tunnel, an IP gateway device can preserve the distinctions between the data stream priorities while the data traffic is within the IP network. By further distributing the data streams between different circuits and trunks by use of multiple circuits, failover and load balancing can occur within the FCIP tunnels.