Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




536 posts

Ultimate Geek

Subscriber

#262125 6-Jan-2020 17:08
Send private message quote this post

About to install a gate video intercom unit (Grandstream GDS3710 in hand, which is a PoE Class 3 device - requires 15.4 w port).  Preference is to power via PoE. 

 

Our current network has a non-PoE 'managed' main switch (Netgear GS724T v4).  To facilitate possible future installation of a couple of outside security cameras and possibly another WAP (PoE), preference is to use a PoE switch as a satellite on the 'managed' main switch; ie. to avoid multiple power supplies required for individual PoE power injectors.  Existing WAP has a PoE power injector.  Existing Netgear GS724T is less than half utilised.

 

Question is:  Is it OK to use an unmanaged PoE satellite switch for this?

 

Or will this prevent future video-VLAN set-up to prioritise video streaming from security cameras, etc?

 

Second question:  PoE vs PoE+?   PoE+ advisable for 'future-proofing'?

 

This is for a semi-rural home office situation.

 

Have mainly been looking at eight port switches though four PoE ports are probably adequate for our foreseeable future needs

 

 

 

Have 'narrowed down' to a few options (price incl delivery).  These include:

 

Unmanaged:

 

  •  

    • Netgear GS108PP (~$195).  Small unit; PoE+ (120 w enough to power 8x PoE or 4x PoE+); 8 PoE+ ports.  Powers enough PoE ports for our use (& then some).  BUT not managed (does that matter?)
    • TP-Link TL-SG1005P (~$78). Small; 5x Ports, 4 PoE probably enough.  BUT not managed  ... and ... 56 w PoE budget only enough to power 3x PoE Class 3 (15.4 w per port)

'Managed':

 

  •  

    • TP-Link Easy Smart Series TL-SG108PE (~$126): small; 'managed'; four PoE ports probably enough. BUT at 65 w max power, not clear that PoE budget is enough to power 4x PoE Class 3 (61.6 w required); not PoE+ 
    • TP-Link TL-SG2210P Smart PoE Switch (~$170): small; 'managed'; eight PoE ports.  BUT not PoE+ ... and ... 53 w enough to power only 3x PoE Class 3 (what is the point of eight PoE ports if can only power 3?).  
    • Ubiquiti Networks UniFi Switch (~$400): Does it all (small, 150 w, 8x PoE+, managed).  BUT more than double the cost of the above; adds significantly to the gate video intercom cost 
  •  

 

 

Of course there are multiple other (generally dearer) options.  Have not looked at HP, Cisco etc due to price compared to the TP and Netgear options.

 

Any advice welcome. 

 

Especially interested to know if using an unmanaged satellite in this situation would be a limitation we will likely regret. 

 

 

 

 


Create new topic


536 posts

Ultimate Geek

Subscriber

  #2386209 6-Jan-2020 17:24
Send private message quote this post

Forgot to mention that the other option is to use individual PoE power injectors.  Cost would be similar (~130 for four) and presumably would not impact the main switch management features.  Also probably more flexible - would not require all cables to be brought back to a common location to power.

 

The thought of multiple (additional) power supplies does not attract.  But perhaps the flexibility and lack of impact on switch management would make this the best option??? 


239 posts

Master Geek


  #2386364 6-Jan-2020 22:09
Send private message quote this post

Hi there
I have a netgear FS728TP v2 coming available in a week or two
https://www.netgear.com/support/product/FS728TPv2.aspx

 
 
 
 


28812 posts

Uber Geek

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  #2386403 7-Jan-2020 07:40
Send private message quote this post

There are no disadvantages of stacked switches except for the fact it makes a network messy and makes it easier to unintentionally create issues such as network loops.

 

 

Or will this prevent future video-VLAN set-up to prioritise video streaming from security cameras, etc?

 

 

Will have zero impact because it's not the job of a switch to prioritise VLAN's over each other - a VLAN exists solely to segregate network traffic. Typically the standard way to prioritise traffic on a switch is DSCP tagging, with the real world reality being that unless you're saturating the 1Gbps uplink port then setting up QoS on the switch will make zero difference anyway.




536 posts

Ultimate Geek

Subscriber

  #2386469 7-Jan-2020 10:21
Send private message quote this post

sbiddle: ... with the real world reality being that unless you're saturating the 1Gbps uplink port then setting up QoS on the switch will make zero difference anyway. 

 

 

 

Thanks.  The Netgear GS108PP (120 w, 8x PoE+, small fanless unit) would therefore appear to be the best way to go, especially looking into the future (PoE+ for Wave 2 WAP's and some security cameras?).  

 

==

 

Main alternative would then be to use individual PoE injectors for the flexibility of not having to bring everything back to a central location to provide power.  Relevant in our current house (concrete floor slab, block exterior walls & no ceiling space in most areas making hidden wiring very difficult).  




536 posts

Ultimate Geek

Subscriber

  #2386503 7-Jan-2020 10:52
Send private message quote this post

The total PoE power budget of most switches is well below 'Max power per port' x 'number of ports'.  eg. the TL-SG2210P has 8 PoE ports but a max PoE power budget of only 53 w, which is only enough to fully power three Class 3 PoE devices.

 

I assume from this that the power allocated to a port will often be less than the maximum require by the attached device?

 

For example, the spec for our gate video intercom unit states that a Class 3 PoE power supply is required.  But I assume it would only need the full 15.4 w allocated when say unlocking the gate, or actively recording video etc, and that most of the time less power would be allocated




536 posts

Ultimate Geek

Subscriber

  #2386504 7-Jan-2020 10:53
Send private message quote this post

Feedback from one supplier is that "For future proofing (adding wireless APs) POE+ is recommended."


28812 posts

Uber Geek

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  #2386509 7-Jan-2020 11:08
Send private message quote this post

DS248:

 

Feedback from one supplier is that "For future proofing (adding wireless APs) POE+ is recommended."

 

 

It really depends what you're trying to do. Pretty much all but the cheapest small unmanaged POE switches these days are POE+, and if future proofing was a concern you'd have to look at 802.3bt!

 

 


 
 
 
 




536 posts

Ultimate Geek

Subscriber

  #2386532 7-Jan-2020 11:53
Send private message quote this post

Little 802.3bt equipment available.  At this point I am OK with a max of 30 w per port.  And not intending to spend $1000 to futureproof to that extent!




536 posts

Ultimate Geek

Subscriber

  #2387692 8-Jan-2020 23:16
Send private message quote this post

In the end, decided to get a single PoE injector (TP-Link TL-POE150S) for now.  

 

There are cheaper options but I was a bit hesitant about using a passive injector (mainly from hypothetical future use by someone unaware it is passive).  Probably an unnecessary concern but the TL-POE150S is an active injector and has been reported as working well with the gate intercom unit we have.


Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Intel introduces 10th Gen Intel Core H-series for mobile devices
Posted 2-Apr-2020 21:09


COVID-19: new charitable initiative to fund remote monitoring for at-risk patients
Posted 2-Apr-2020 11:07


Huawei introduces the P40 Series of Android-based smartphones
Posted 31-Mar-2020 17:03


Samsung Galaxy Z Flip now available for pre-order in New Zealand
Posted 31-Mar-2020 16:39


New online learning platform for kids stuck at home during COVID-19 lockdown
Posted 26-Mar-2020 21:35


New 5G Nokia smartphone unveiled as portfolio expands
Posted 26-Mar-2020 17:11


D-Link ANZ launches wireless AC1200 4G LTE router
Posted 26-Mar-2020 16:32


Ring introduces two new video doorbells and new pre-roll technology
Posted 17-Mar-2020 16:59


OPPO uncovers flagship Find X2 Pro smartphone
Posted 17-Mar-2020 16:54


D-Link COVR-2202 mesh Wi-Fi system now protected by McAfee
Posted 17-Mar-2020 16:00


Spark Sport opens its platform up to all New Zealanders at no charge
Posted 17-Mar-2020 10:04


Spark launches 5G Starter Fund
Posted 8-Mar-2020 19:19


TRENDnet launches high-performance WiFi Mesh Router System
Posted 5-Mar-2020 08:48


Sony boosts full-frame lens line-up with introduction of FE 20mm F1.8 G large-aperture ultra-wide-angle prime Lens
Posted 5-Mar-2020 08:44


Vector and Spark teamed up on smart metering initiative
Posted 5-Mar-2020 08:42



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.