Interswitch link mechanism for connecting high-performance network switches
Patent 5742604 Issued on April 21, 1998. Estimated Expiration Date: 
March 28, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 28, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesNetwork adapter for connecting local area network to backbone network Star local-area network system Hub for segmented virtual local area network with shared media access Patent #: 5394402 InventorsApplicationNo. 623142 filed on 03/28/1996US Classes:370/401, Bridge or gateway between networks370/390Replicate messages for multiple destination distributionExaminersPrimary: Olms, Douglas W.Assistant: Patel, Ajit Attorney, Agent or FirmInternational ClassH04L 012/66AbstractAn encapsulation mechanism efficiently transports packets between ports of different switches in a network on the basis of, inter alia, virtual local area network (VLAN) associations among those ports. The switches are preferably interconnected by a novel interswitch link (ISL) mechanism that appends ISL destination and source information, along with ISL error detection information, to VLAN-modified packets. The ISL mechanism keeps the VLAN associations of the packets intact during transfer between the switches in accordance with a high-performance switching bus architecture. | |
