Re: OT: Question about 10/100 switch on a LAN with a faster router

[rhkramer@gmail.com]

Thanks (earlier I thanked Christian directly), but I wanted to add that the 
sketch he drew (below) does correctly reflect the intended LAN configuration.

On Tuesday, December 31, 2019 08:28:03 AM Christian Seiler wrote:
> Hi there,
> 
> Am 2019-12-31 14:03, schrieb rhkramer@gmail.com:
> > I'm about to recommend that he get a 10/100 5 port Ethernet switch to
> > connect
> > to the two cameras and then a short cat5 (or better) Ethernet cable to
> > connect
> > from the switch to the router.
> > 
> > I'm abouit 99.9% sure that using such a switch will not slow down any
> > other
> > parts of his network, but I don't want to mislead him.
> 
> I assume you want to do the following?
> 
>     +---------- Other device (Gbit)
> 
>     |      (100 MBit)
> 
>   Router ----------------- Switch
> 
>     |                       / |  \
>     |                      
>     |                      /  |   \
>     |              
>     |              Camera A   |   (potentially more in the future)
>     |              
>     |                     Camera B
> 
>     +------------ Other device (GBit)
> 
> 
> How much peak bandwidth are the cameras going to use simultaneously?
> 
> If both cameras won't ever use more than 100MBit/s _combined_
> (either because they only use the bandwidth at different times OR
> they only actually use 50MBit/s or less anyway), then this
> configuration will be fine. Otherwise I wouldn't recommend this
> setup. (Also consider the future-proofing of this setup, even if
> you only add more 100MBit/s devices, because once you connect all
> 4 switch ports, all of these devices combined will share only a
> single 100MBit/s link to the router.)
> 
> > Am I missing anything?
> 
> Do you (or he) still have a 100MBit/s switch lying around so it
> doesn't cost you anything? If so this will be fine. Otherwise I don't
> see the point in buying a 100MBit/s switch -- I don't know about the
> US, but here in Germany I can get a 5 port Gigabit switch for the
> equivalent of ~ 20$, and that includes a VAT that is more than twice
> that of the typical sales tax in the US. Heck, I can get an 8port
> Gigabit switch for the equivalent of ~ 25$. Sure, I can get a
> 100MBit/s switch for ~ 10$, but unless I want to deploy 100s of
> these, I don't see the point in saving this small amount of money;
> especially since a Gigabit switch will likely still be something
> useful in 10 years once your brother completely changes his current
> setup, but a 100MBit/s switch might not be.
> 
> Regards,
> Christian