- Patent Title: N-node virtual link trunking (Vlt) supporting arbitrary topologies
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Application No.: US14198602Application Date: 2014-03-06
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Publication No.: US09350619B2Publication Date: 2016-05-24
- Inventor: Pathangi Janardhanan , Shivakumar Sundaram , Avinash Natarajan
- Applicant: DELL PRODUCTS, L.P.
- Applicant Address: US TX Round Rock
- Assignee: DELL PRODUCTS L.P.
- Current Assignee: DELL PRODUCTS L.P.
- Current Assignee Address: US TX Round Rock
- Agency: North Weber & Baugh LLP
- Main IPC: H04L12/24
- IPC: H04L12/24

Abstract:
Aspects of the present invention include an arbitrary N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the arbitrary N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
Public/Granted literature
- US09379945B2 N-node virtual link trunking (Vlt) supporting arbitrary topologies Public/Granted day:2016-06-28
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