What Is the Maximum Number of Member Switches That Can Be Managed by the Switch in a Cluster?

PH?NG KH?M CHUY?N KHOA TAI - M?I - H?
https://benhvientaimuihong.vn/

Before you start replacing parts ,need a little more information . Maybe able to save you some time an money . Does the horn work when you push the horn button , does the air bag light stay lit in the instrument cluster ? The button lights for the bottons on the steering wheel are lit by the BCM - body control module . Interior Lamps Dimming
The second group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination and incandescent lamps.
When the ignition switch is turned to the RUN position, the radio's vacuum fluorescent (VF) displays turn on at maximum brightness. When the park lamps are on, all incandescent back lighting turn on at the dimming level indicated by the I/P dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. The panel dimmer switch potentiometer is an input to the BCM. When the driver selects a dimming setting by moving the I/P dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. When the I/P dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the I/P dimmer switch.
The following switches and components have back lighting when the park lamps are on:
• The instrument panel cluster (IPC)
• Radio, front and rear
• Window and heated seat switches
• Garage door opener switch
• Selectable ride switch
• Roof beacon switch
• Power take off (PTO) switch
• Headlamp leveling switch
• Rear wheel steering mode select switch
• HVAC control assembly
• Headlamp and panel dimmer switch
• Transfer case shift control switch
• PSIR disable switch
• PRNDL lamps
• Traction control switch
• Steering wheel control switches
• Fog lamp switches

Could be the clock spring inside the steering coulmn ,under the steering wheel if horn doesn't work ,air bag light lit etc...

All of these are not working ? Instrument Cluster and Panel Illumination The non-dimmable lighting system illuminates the following components:

• Roof opening panel control switch
• Window control switches
• Door lock control switches
• Sliding backlite window control switch

The dimmable panel lighting system illuminates the following components:

• Adjustable pedal switch
• Manual climate control assembly
• Electronic automatic temperature control (EATC) assembly
• Headlamp switch
• Instrument cluster
• Message center switch
• Audio unit
• Steering wheel audio and climate control switches
• Speed control switches
• Digital versatile disc (DVD) player
• Floor shifter
• Parking aid switch
• Four wheel drive (4WD) switch
• Traction control switch

The instrument panel dimmer switch is a contact switch that signals the desired level of brightness sent to the instrument cluster and dimmable components.
You checked all the fuse's ?

1. Visual Inspection Chart Mechanical Electrical
   • Headlamp switch
   • Central junction box (CJB) fuse(s):
     • 6 (15A)
     • 22 (10A)
   • CJB circuit breaker 401 (30A)
   • Auxiliary relay box 1 fuse 1 (5A)
   • Circuitry
   • Headlamp switch
   • Instrument panel dimmer switch
   • Clockspring
   • Illumination source(s)
   • CJB

Did you check these fuse's in the central junction box and

• Auxiliary relay box 1 fuse 1 (5A) You don't need to check them all ,just the right one's . How did you check them ? pull them out an look ?
• Principles of Operation
  Dimmable Illumination With the parking lamps ON, voltage is supplied to the instrument panel dimmer switch (part of the headlamp switch). The instrument panel dimmer switch then sends a variable pulse width modulated (PWM) voltage to the instrument cluster and other dimmable switches and components.
  Fixed Illumination With the ignition switch in the START or RUN position, the delay accessory relay provides voltage to the non-dimmable switches. The delay accessory relay is controlled through the instrument cluster.
  

Managed switches you can enter the default ip into a web browser, login and "manage" settings" this default IP will be vendor specific. Unmanaged you just plug in devices and that's about it. Managed switches you will pay a lot more for. Some lower end ones maybe several hundred dollars and up. If you are buying switches at Best Buy they are almost all unmanaged.

Plug a ethernet cable from any port on the first switch to any port on the second switch. Thats pretty much it. If it's a managed switch then it's dependent of how you have the managed switch configured. Managed switches typically cost several hundred to several thousand dollars so if your just running cheap switches then the above applies.

According to this page http://www.netgear.com/products/business/switches/unmanaged-rackmount-switches/JFS516.aspx#two it is not a managed switch.

switch not responding to ping commands. hiow do i find out what the problem is

There is nothing special about these switches other than that they are managed. Managed means they have some means of connecting to them and "managing" them like you do when you configure a wireless router by going to some ip address in your browser to access the configuration. They usually are able to communicate statistics, set up virtual subnetworks, monitor ports, mirror ports, control which ports can access which others, set speed limits on ports, etc... A normal switch is "dumb", there is nothing to configure and it just does it's thing, connecting anybody and everybody that are connected to any of it's ports. Procurve switches are popular because they are great switches, there are other managed ones that can be had for much less, I use 48 port managed Linksys that have/exceed these capabilities for way cheaper... examples

Well 1 can tell you that if I remember right with cisco networking the maximum number of swiches possible between two hosts in a LAN network is 7.
Try to imagine a line with 2 pc at the end points. You can put maximum 7 swiches between them or expect problems.
I suggest you to try to make a current network map if you don't have one already.
Than do some counting between points just like the way your routing protocol is managing the packets route and see how many swiches you hit.

You can read about a very similar kind of incident with brand new CISCO equipement over here.

Maybe the problem's root is something else, but what you wrote was giving me this idea first to think of.
Hope I gave you an idea.

Regards
Imre