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.


irs

irs

4 posts

Wannabe Geek


#296197 29-May-2022 11:14
Send private message quote this post

With regards to Spark Smart Modems 1 or 2, and deploying IP addresses based on the devices MAC address in the range I allocate for DHCP. (i.e. DHCP reservation addresses)...

 

Does anyone know the limit to the number of devices that can be served up with static addresses?

 

FYI: I tried doing this on a Huawei HG253 modem and found it was limited to eight devices. I am planning to have 60 to 70 devices.

 

thanks, Ian.

 

 


Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2
Affiliate link
 
 
 

Affiliate link: Norton 360 antivirus provides enhanced security for your connected devices, a secure VPN for online privacy, Password Manager, Firewall, SafeCam, PC Cloud Backup, Dark Web Monitoring, Parental Control, and more. An all-in-one cybersecurity solution backed by 100% Virus Protection Promise and 60 Day Money Back Guarantee.

irs

irs

4 posts

Wannabe Geek


  #2920089 29-May-2022 18:46
Send private message quote this post

Just visited a friends place and they have a Spark Smart Modem 1 (Arcadyan VRV9517-UWAC34-A-SP). 

 

I logged into admin account and found that LAN -> LAN DHCP -> has in the title "up to 10 computers".

 

So that doesn't fit my plans.

 

Any chance anyone knows the limit for the Spark Smart Modem 2?

 

thanks, Ian.

 

 


  #2920159 29-May-2022 21:21
Send private message quote this post

Throwing my 2 cents worth into the thread....

 

You might be lucky to find a router that can handle 60 or 70 DHCP reservations.

 

Maybe you could use IPv6? However, if you are on Spark using a SM2 then maybe not... Spark does not use IPv6 🤥

 


An IPv6 device will use the MAC address of its interface to generate a unique 64-bit interface ID. However, a MAC address is 48 bit and the interface ID is 64 bit.

 

https://networklessons.com/ipv6/ipv6-eui-64-explained

 

 





Gordy

 

My first ever network connection was a 1MHz AM crystal(OA91) radio receiver.


cbrpilot
842 posts

Ultimate Geek

Trusted
Spark NZ

  #2920238 29-May-2022 23:05
Send private message quote this post

Smart Modem 1 looks like it does 10 addresses today.  I'm confident that will expand in the future - but not to the 60-70 range.  I don't have a date for that change.

 

I am not sure about the Smart Modem 2 (I don't have one).  Best guess is that it will match the existing Smart Modem 1.

 

 

 

So I don't think the Spark Smart modems will meet your requirements.





My views are my own, and may not necessarily represent those of my employer.




MadEngineer
3009 posts

Uber Geek

Trusted

  #2920242 29-May-2022 23:38
Send private message quote this post

irs:

 

FYI: I tried doing this on a Huawei HG253 modem and found it was limited to eight devices. I am planning to have 60 to 70 devices.

 

 





You're not on Atlantis anymore, Duncan Idaho.

fe31nz
816 posts

Ultimate Geek


  #2920245 30-May-2022 00:07
Send private message quote this post

My EdgeRouter ERL and ER4 routers have no DHCP limits.  They just build a table in RAM and eventually you would run out of RAM, but that would be a massive table.  They use standard Linux DHCP server software.  I expect that there are a number of routers out there that also use the standard Linux DHCP servers.  Anything running a version of OpenWRT will be using Linux DHCP servers software.  I am fairly sure that Mikrotik routers will have full featured DHCP also.  It is just routers that target the home users only that will be doing utterly stupid things like limiting the number of DHCP entries.


shk292
2359 posts

Uber Geek

Lifetime subscriber

  #2920276 30-May-2022 08:12
Send private message quote this post

This is the text from the embedded help screen for the SM2:

 

 

 

 

DHCP Server (IP Address Pool)
The DHCP server function makes setting up a network very easy by assigning IP addresses to each computer on the network. The DHCP Server can be turned off if necessary. Turning off the DHCP server will require you to manually set a Static IP address in each computer on your network. The IP pool is the range of IP addresses set aside for dynamic assignment to the computers on your network. The default is 1-200 (200 computers) if you want to change this number, you can by entering a new starting and ending IP address and clicking on "Save settings".

 

 

 

 

It looks like you can set any address you like for start and end of DHCP pool.  I have mine set as .64 to .253 and that works OK


xpd

xpd
Trash bandit
11924 posts

Uber Geek

Retired Mod
ID Verified
Trusted
Lifetime subscriber

  #2920278 30-May-2022 08:21
Send private message quote this post

Agree with MadEngineer ..... if you want something handling that many devices, a consumer aimed unit is probably not the ideal device.

 

I have probably about 15-20 devices connecting to my FritzBox no issue. And we're a fairly "tech" family (all 4 of us have at least 2 devices, along with consoles, server, NAS etc)

 

60-70 - what are you doing ? :D Can only assume in a large flat situation or an office.....

 

 

 

 





       Gavin / xpd / FastRaccoon

 

Website - Photo Gallery - Instagram

 

 




cyril7
8724 posts

Uber Geek

ID Verified
Trusted
Subscriber

  #2920284 30-May-2022 08:44
Send private message quote this post

Hi as per the other responses, your using the wrong device, I would recommend a mikrotik, fortigate or similar, depending on your network skills you may need to employ help in setting those up to ensure they work correctly and securely.

Cyril

  #2920286 30-May-2022 08:48
Send private message quote this post

The OP is trying to assign an DHCP IP address reservations based on a device/computer hardware MAC address.

 

This is different to assigning a general DHCP IP address. General DHCP IP addresses are assigned on a first come basis.

 

I don't have a SM2.... below is a snip from my SM1 which may help:

 

 

 





Gordy

 

My first ever network connection was a 1MHz AM crystal(OA91) radio receiver.


shk292
2359 posts

Uber Geek

Lifetime subscriber

  #2920287 30-May-2022 08:55
Send private message quote this post

I misunderstood the question - the SM2 (mine is a Skinny but I think they're the same) has the same limitation as the SM1 posted just above


openmedia
2755 posts

Uber Geek

Trusted

  #2920289 30-May-2022 09:03
Send private message quote this post

cbrpilot:

 

Smart Modem 1 looks like it does 10 addresses today.  I'm confident that will expand in the future - but not to the 60-70 range.  I don't have a date for that change.

 

I am not sure about the Smart Modem 2 (I don't have one).  Best guess is that it will match the existing Smart Modem 1.

 

 

 

So I don't think the Spark Smart modems will meet your requirements.

 

 

 

 

10 is ridiculous. Even just a combination of phones + laptops will exceed that in many houses without addind smart TVs and perhaps some IOT devices.

 

I've currently got 105 (IPV4) devices allocated on my R7000 router and I'm only just starting to build up my smart environment.





Generally known online as OpenMedia, now working for Red Hat APAC as a Technology Evangelist and Portfolio Architect. Still playing with MythTV and digital media on the side.


Nate001
525 posts

Ultimate Geek


  #2920291 30-May-2022 09:07
Send private message quote this post

In all seriousness, why do you need 60-70 static DHCP?


irs

irs

4 posts

Wannabe Geek


  #2920313 30-May-2022 10:49
Send private message quote this post

Hi Everyone,

 

Many thanks for your comments. It sounds like SM1 or SM2 won't meet my requirements and thanks for listing some alternative routers that should.

 

I'll walk the aisles of PB Tech and survey their router offerings, but in the meantime I might experiment with a quad core 3GHz x86 box with two 1Gb/s ethernet ports running OpenWrt. 

 

https://openwrt.org/docs/guide-user/installation/openwrt_x86

 

This should have enough grunt to process the PPPoE on the 900/500 WAN link to Spark, and give me plenty of static leases ...although it seems that some folks do have trouble getting more than 50...

 

https://forum.openwrt.org/t/need-to-increase-50-static-dhcp-lease-limit/27209

 


Fortunately, I'm not paying the power bill. ...but at least it should take the chill off the room on winter mornings.

 

cheers, Ian.


kobiak
1577 posts

Uber Geek

Trusted

  #2920315 30-May-2022 11:00
Send private message quote this post

I've got SM1 + pihole on raspberry pi doing DHCP static and dynamic (total 50+ devices). works without issues for past 4+ years. I dont think there's any limit on DHCP using pihole.





helping others at evgenyk.nz


irs

irs

4 posts

Wannabe Geek


  #2920317 30-May-2022 11:06
Send private message quote this post

Nate001:

 

In all seriousness, why do you need 60-70 static DHCP?

 

 

 

 

My rational is that I want all 70 x devices to have the identical image of their operating system and applications on their SSD. That way if a SDD fails I replace it with a new SSD which has been prepared with the image already copied to it.

 

As the static leases will assign the IP addresses, then I will know which device I'm SSHing into.

 

Occasionally I'll need to swap out a whole device and the replacement device will have a different MAC address, but all I need to do is update the DHCP script in the router with the new MAC address.

 

 


 1 | 2
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic





News and reviews »

D-Link G415 4G Smart Router Review
Posted 27-Jun-2022 17:24


New Zealand Video Game Sales Reaches $540 Million
Posted 26-Jun-2022 14:49


Github Copilot Generally Available to All Developers
Posted 26-Jun-2022 14:37


Logitech G Introduces the New Astro A10 Headset
Posted 26-Jun-2022 14:20


Fitbit introduces Sleep Profiles
Posted 26-Jun-2022 14:11


Synology Introduces FlashStation FS3410
Posted 26-Jun-2022 14:04


Intel Arc A380 Graphics First Available in China
Posted 15-Jun-2022 17:08


JBL Introduces PartyBox Encore Essential Speaker
Posted 15-Jun-2022 17:05


New TVNZ+ streaming brand launches
Posted 13-Jun-2022 08:35


Chromecast With Google TV Review
Posted 10-Jun-2022 17:10


Xbox Gaming on Your Samsung Smart TV No Console Required
Posted 10-Jun-2022 00:01


Xbox Cloud Gaming Now Available in New Zealand
Posted 10-Jun-2022 00:01


HP Envy Inspire 7900e Review
Posted 9-Jun-2022 20:31


Philips Hue Starter Kit Review
Posted 4-Jun-2022 11:10


Sony Expands Its Wireless Speaker X-series Range
Posted 4-Jun-2022 10:25









Geekzone Live »

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



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.