What is the connectivity between VSS and VSS?
For the connectivity between the access layer and VSS, Layer-2 MEC is necessary and integral part of the campus design. The connectivity option from VSS at the distribution (typical Layer-2 and Layer-3 boundary) to Layer-3 domain has two choices: ECMP or Layer-3 MEC.
What to know about VSS in campus design?
This chapter covers the implementation of VSS in campus design, specifically at the distribution layer addressing all relevant configuration details, traffic flow, failure analysis, and best practice recommendations. The chapter is divided into the following main sections:
What is the normal traffic flow in VSS?
Figure 3-2 illustrates the normal traffic flow in a VSS environment where VSS connectivity to the core and the acces layer is enabled via fully-meshed MEC.
Why is MEC important in VSS campus design?
For both Layer-2 and Layer-3 options, MEC is ubiquitous in a VSS-based environment so understanding traffic flows and failure behaviors as it relates to MEC in the VSS-enabled design is critically important for both design scenarios. This section also addresses capacity planning associated with a VSL bundle and traffic flow within a VSS campus.
What is the gear ratio for a VSS sensor?
The rear axle gear ratio is 4.10, which becomes a final EFI “Gear Ratio” of 1.61 (4.10 ÷ 2.54 = 1.61 “Gear Ratio” in EFI software). Example VSS #2: A speedometer drive gear has 8 teeth, and the driven gear has 21 teeth (21 ÷ 8 = 2.63 speedometer gear ratio).
Why does my VSS sensor not recognize the change?
Meaning when you change it (click “Save”), it won’t recognize the change until you do a key-on event. When you change some values with the key on, the math is incorrect because certain parts don’t get re-initialized, until the next key-on event.
Where does VSS data go in a car?
This information is sent to the electronic computer module (ECM), where it is shared with other vehicle systems that depend on this data. The function of several of your vehicle’s systems depend on data from the VSS and ECM, such as variable speed power steering, cruise control, anti-lock brakes and your speedometer.
What are the functions of the VSS and ECM?
The function of several of your vehicle’s systems depend on data from the VSS and ECM, such as variable speed power steering, cruise control, anti-lock brakes and your speedometer. To correct your VSS-related problem, know where it is located and how to replace it.