topic Re: VLAN Configuration in Wireless

VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 07:46:06 GMT

Dear All,

i have a question about VLANs configuration.currently i have 4 vlan created for IP TV, IP Phone, IP Camera and Wireless Wifi. now i want to configure more VLAN for Wifi Network only because the Wifi is getting slow sometime so if i seperate all Access points by by VLAN it will reduced broadcoasting and speed will be better. now the question is shuold i configure vlan like already existing vlan or i need to create sub vlan of one main vlan which is created for WIFI APs?

Thank You

Re: VLAN Configuration

Kasun Bandara — Sun, 01 Dec 2024 08:09:00 GMT

@Sardar1 hi, i noticed that you have slowness issues in wifi. i suggest you to verify the wifi device status and the interference if its only related to the wifi connections. and next step will be to verify the wired competitivities.

what is the IP rane subnet for wifi segment? if its very big subnet such as /16 i suggest you can segregate the same segment. if its /24 or below, this slowness may relate to different issue.

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 08:24:36 GMT

Hi @Kasun Bandara Thanks for your prompt response . i recently joined a new office where our company is providing ISP services for Wifi, and i am in the customer site to resolve issues related to our wifi services, the internal network is managed by customer themselve. now the wifi is getting slow in peak hours when the tenant get back from work.the custome ask me to configure more vlan on their Core switch so it will help and increase Wifi speed. for example we have 4 VLANs valn 4, 5, 6, and 7. what i need to do next should i create some more vlans like 8,9,10-----30 and put multiple APs in it, as there are around 400 APs.or i have to create sub Vlan under Wifi main Vlan which maybe Vlan 7.

Thank you

Re: VLAN Configuration

Mark Elsen — Sun, 01 Dec 2024 08:30:44 GMT

- A (new) standard vlan will be sufficient to separate AP and client traffic ,

Re: VLAN Configuration

Kasun Bandara — Sun, 01 Dec 2024 08:48:54 GMT

@Sardar1 , i understood your requirement. you can create more VLANs and segregate the APs and User VLANs. for ex. you can have multiple VLANs for different departments in company or Floors or specific locations. but again i suggest you to do analysis of architecture to understand real issue and find the root cause for slowness. as its slowing down at peak times, this may be saturating the internet link or switch throughputs too. if that is the issue, there is different fixes to do.

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 09:11:21 GMT

Thank you maybe what you mentined is the issue let me check other troubleshooting as well .

Re: VLAN Configuration

Flavio Miranda — Sun, 01 Dec 2024 09:32:53 GMT

@Sardar1

How many users per Access Point do you get in Peak hours?

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 09:41:18 GMT

@Flavio Miranda the Access Point is reserve for 3 persons each AP as all the APs installed in Tenant Room and there are max 3 persons in each room.

Re: VLAN Configuration

Flavio Miranda — Sun, 01 Dec 2024 09:47:09 GMT

Are those tenant Room separated with some kind of wall?

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 10:28:59 GMT

yes all room are seperated with walls there are around 13 buildings and 12 rooms in each building

Re: VLAN Configuration

Flavio Miranda — Sun, 01 Dec 2024 12:01:49 GMT

Good. Seems you have a good envrironment for wi-fi with low interference and channel utilization.

I dont believe seggregating vlan will help with wi-fi but surely is a good practice for networking

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 12:11:51 GMT

so what should i do now for increase the speed and overcome the slow internet issue ?

Re: VLAN Configuration

Flavio Miranda — Sun, 01 Dec 2024 12:25:39 GMT

It seems you have a good wi-fi environment. Not sure which access point you have, which switch and how they interconnect.

We can find bottleneck in every segment starting by the PCs, network adapter, drivers.

I would recommend run iPerf test inside the network and from inside to outside. This could give you a clue on where the bottleneck is.

You can use a wireless device as client and one cable device as server.

After that you can repeat the tests but now using a server outside which includes testing also the internet .

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 12:40:23 GMT

Ok i will try Iperf as well, the network setup is ok but all the access point in one VLAN that why i ask if i can configure more vlan and distribute the APs in different VLAN.

Thank You so much for your time

Re: VLAN Configuration

Rich R — Sun, 01 Dec 2024 14:55:43 GMT

What model and type of APs?
Autonomous APs or on controller?
If controller what model of WLC and what version of software?
Have the wireless data rates been optimised (disable lower data rates)? Leaving the lower data rates enabled can cause high channel utilisation.
How is the channel allocation and AP power settings being managed?
Are you using Band Select (or equivalent feature) to steer clients to 5 GHz rather than 2.4 GHz?

Simply adding new VLANs is very unlikely to resolve your issue. The problem is far more likely to be wireless, LAN or internet link congestion at peak times so you need to understand what the issue is before taking any further action.

Re: VLAN Configuration

Sardar1 — Sun, 01 Dec 2024 17:09:02 GMT

the Access Point are Aerohive Networks wifi and using Autonomous APs there is no Controller.direcetly connected with Access Switches.

Re: VLAN Configuration

Rich R — Sun, 01 Dec 2024 18:49:40 GMT

Sorry @Sardar1, you might have missed it, but this is a Cisco community where the focus is specifically on Cisco wireless products and although we can help with questions on integrating Cisco products with other vendors' products and networks this really isn't the right place to be asking questions about another vendor's products!

The basic principles we've mentioned above still apply but we really can't advise you any more than that on those products.

I'd suggest you contact the Aerohive support team or community if they have one. Just done a quick search and see Aerohive is now part of Extreme Networks and they do also have a community so suggest you try there.

Re: VLAN Configuration

Flavio Miranda — Mon, 02 Dec 2024 01:26:28 GMT

I dont see all AP in one vlan as a huge problem. This is very common actually to facilitate management. The broacast the APs will create by staying on the same vlan is not something that will slow down you network. But, you can, for sure, seggregate that.

I believe your problem is something else but only with an iPerf test you can get some conclusion. iPerf is a good resouce when problem is related to network slow.

Re: VLAN Configuration

Sardar1 — Mon, 02 Dec 2024 06:21:15 GMT

@Rich R Yes dear I know but i have Cisco Core switch installed. what i asked in my first Question is about VLAN i asked shuold i create more vlan for wireless as there is already one vlan created or i need to create sub vlan.

Re: VLAN Configuration

Sardar1 — Mon, 02 Dec 2024 06:24:25 GMT

@Flavio Miranda Thank You for your response i will try to find out the root cause through Iperf3 and other solution.