Questions tagged [wireless]

For questions about wireless networking (802.11), including any licensed or unlicensed RF medium used to provide point-to-point or point-to-multipoint network links.

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ECHOLIFE HG8245c not resetting nor i can access 192.168.1.0 [closed]

i have GPON router mode number EchoLie hg8245C It was working fine untill i uncheck the option ofenable SSID now neither the wifi is no nor i can access the router via lan cable i.e it is not taking ...
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Connecting two UniFi Wireless Networks with a Point-to-Point Wireless Bridge or UniFi Wireless Uplink [closed]

I have a network with 3 existing Ubiquiti UniFi AP AC Pro's covering the inside of a large residence. The wish to extend that wireless network to an out-building on the same property approximately ...
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11 views

Hide currently connected wireless connection info from installed applications (emulate wireless connection as Ethernet) [closed]

You are probably familiar with the privacy issue topic about Google's usage of wireless access point's name, MAC address and GPS data of devices connected to that wireless access point to determine ...
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How can i view files in my SD card when ut says cant ioen this file, or can't watch videi [closed]

How can i view files on my SD card when it says, cannit view file, or can't watch this video
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1answer
18 views

Does the Duration Field in 802.11 Depend on SNR

I am trying to understand the behavior of the Duration/ID field in 802.11 specs. Its role and behavior are outlined in the standard. This field tells other stations how long the transmitter is going ...
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17 views

What should I be looking out for in a wireless router to support a large number of users?

I hope this is the correct place to ask this. I was placed in charge of the network of a small business. Previously, the number of wireless devices connected to the wireless router was under 20, and ...
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1answer
34 views

Trying to setup 5Gbps setup with APC and AP

I currently have a 5Gbps line being provided and want to set up an Access Point Controller (WEC-8050) with Access Points (WEA512i) and Cisco Catalyst 2960-x 48 port, is this possible? The APC and ...
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3answers
2k views

How to find the client who downloads a big file?

today I found out that somebody in our organization utilized our uplink for 100%. We have Cisco WLC 2500 where I could see in application monitoring that 80% traffic of the last 90 sec was a file ...
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20 views

How does direct sequence n-bit chipping code recover bit in the event of interference?

Say for example my data stream was 1010.Using 4-bit chipping code, with a random sequence of 0100101101011001. The XOR'd data which the receiver receives is 1011101110101001. I understand that ...
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1answer
55 views

Is WIFI like a hub, switch or router?

A wireless router; the wireless part of it, is that a layer 2 or layer 3 device? I have heard that a WiFi router is just a wired router with a built-in wireless AP, and since a wireless AP functions ...
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2answers
61 views

Point to point link with two Internet connections

Thank you in advance for reading this question. I have two buildings, let's say A and B, each connected to the Internet. Devices in A also need to access devices in B and vice-versa. The Internet ...
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28 views

How can I consider the noise from my neighbor in V2X?

I'm working in v2x and I'm trying to calculate the date rate for specific vehicles in the rode. How can I consider the other neighbor's vehicle's noise when calculating the date rate for my specific ...
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35 views

Cisco Prime: Accurate Wi-Fi association history?

I'm running Prime 3.7 with a 2504 WLC (8.5.151.0) and am finding that the client association history under Monitor -> Clients and Users -> [select a client] does not show associations that last less ...
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1answer
41 views

How do hosts filter broadcast signals in wireless network?

In bus/hub network, hosts check the destination address of every broadcasted packet they receive and accept it if they are the destination, otherwise they ignore it. Do we use the same principle in ...
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1answer
123 views

Lightweight AP won't join with Wireless Lan Controller

I'm trying to set up a wireless network, and learn at the same time. I'm using a Cisco 5508 WLC and a AIR-CAP3702I-A-K9 lightweight AP. The problem I'm having is that the LAP won't joing with the WLC. ...
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1answer
40 views

How a wireless access point reads all the available SSIDs

When a wireless access point is broadcasting its SSID (beacon frame) I assume it sends it on specific selected channel (channel 1-14 for 2.4 GHz network). But how do all the other access point ...
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2answers
44 views

Can I set up a WLAN with a WAP but without Internet?

I was able to set up a LAN with the following configuration : A main computer (Windows PC) with a DHCP and DNS server, who is configured to have a static IP address Three devices (embedded Linux) ...
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48 views

Does Wireshark capture all Wi-Fi traffic under the same access point even with WPA encryption?

I know that free unencrypted-Wi-Fi is dangerous since all the traffic in the same AP is visible. Does Wireshark capture all Wi-Fi traffic under the same access point even with WPA encryption?
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4answers
83 views

How 802.11 LAN will avoid packet collision in a wireless medium?

Say we have a router (capable of the 802.11 protocol standards) and some number of devices that are configured to communicate with this router. I have learnt about how devices/nodes use CSMA/CA to ...
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1answer
56 views

Passive parabolic 2.4 GHz WiFi antenna to directional antenna repeater

Please excuse my lack of proficiency in this subject. I am just begining my understanding of antennas, bridges, repeaters and the like. I have a somewhat standard situation of two buildings ...
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1answer
57 views

Why do wifi devices slow down as other devices start doing work?

I've been doing some testing lately on 802.11g and I'm very confused by the results. I'll go into the details below. First please understand I'm a software developer, but not a network engineer. I ...
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1answer
53 views

ARPs in WIFI Interface Monitor Mode

I set my WIFI interface to monitor mode. I did not expect to see any ARP requests. Can someone explain why there is ARP traffic?
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1answer
26 views

How does a transmitter re-modules a wave radio to get more distant devices?

I was told that a WiFi AP re-modulates its radio signal in order to enable it to better go through obstacles and noisy places, reaching more distant client's transceivers this way. Basically, the ...
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1answer
144 views

AP won't join WLC

I have a lightweight AP AIR-AP3802I-E-K9 that I'm trying to connect to my WLC, but it just won't. When I run a debug on the WLC, I can see the Join request from my AP, and I can see my WLC sending a ...
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2answers
65 views

Functionality differences between an Wireless Access Point and a Switch?

I have a WAP connected to a switch via a twisted pair cable. Aside from the communication medium to other nodes (electrical signal vs radio waves), do they operate the same way? Specifically: When ...
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1answer
78 views

IPerf3 UDP does not meet specified bitrate [closed]

We are currently performing tests over a wireless network and are having some issues trying to get the correct configuration of iperf3. Our server side command line is as follows iperf3 -s -p 5101 ...
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2answers
62 views

Airtime efficiency

How is airtime efficiency measured? How does one increase it, decrease power consumption, and minimize the amount of RF transmitted? cf. these comments
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1answer
62 views

link asa with core switch to wlc

have 4 switch 3560 POE-8 , 2 of them have been RESET, AND w l c 2100 RESET too, but there are firewall AND ONE switch. Keeps the OLD CONFIG. I try to restore the network to the same old ...
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2answers
171 views

Is it really necessary for APs to constantly send beacon frames (always be in “discovery mode”)?

Why do wireless APs constantly transmit (e.g., with a beacon interval of 10×/sec.), even when no devices are connected to them? Doesn't that just cause needless RFI? Is it really necessary to ...
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1answer
106 views

Cisco LAP1142, usable without WLC ? Alternatives to a WLC device?

The title pretty much says it all. A charity I volunteer for was given a whole bunch Cisco 1142 ligth-weigth AP's. (A demolition guy pulled them from the building he was taken down and donated them.) ...
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2answers
79 views

Why are there so many more dual-band (2.4 & 5 GHz) Wi-Fi APs than single-band, 5GHz-only ones?

Why are so many more dual band (802.11n 2.4GHz & 802.11ac 5 GHz) APs than single-band, 5GHz-only ones? Is this for backwards compatibility?
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1answer
45 views

Hide SSID to block probe requests from clients

According to this Answer clients are sending probe requests to discover wifi networks. If I hide the SSID the AP wouldn't need to handle these probe requests and therefore the workload would be lower....
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62 views

Set up multiple WAP4410N AP with same SSID

We are facing a WiFi connection issue in the prod environment at client place (a big hall, around 200ft x 150ft). Details: Environment: 4 Cisco WAP4410N Access points mounted on the pillars in the ...
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34 views

MU-MIMO with spatially separated antennas

Assume a MU-MIMO capable wifi access point with two external antennas. The antennas are placed in two different locations. It's not possible for a wifi signal to reach (via air) from one location to ...
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2answers
66 views

Calculating maximum distance for receiving LTE signal

I work for a large retailer who recently started adding outdoor Yagi antennas to try to boost their LTE signal for their LTE based modems at each store. I wanted to see if there was a way to calculate ...
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2answers
455 views

How to connect multiple devices with identical static IP into a wireless network

I've been searching StackExchange and the Internet for a while looking for a solution for my networking question. Some articles I found are here, here and here, but these don't need to deal with a ...
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1answer
132 views

ARP spoofing over WLAN

As I understand, in ARP spoofing (of any kind), there's a man in the middle that intercepts frames from a sender (Alice) by masquerading as a receiver (Bob) and passes this frame to the server by ...
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1answer
28 views

Range of SSDP messages [closed]

I am reading about SSDP from here and here. I understand that its purpose is to advertise and discover network services. My question: Is the broadcast range of a SSDP packet local (e.g.: in a WLAN) ...
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1answer
112 views

Get WLC running-config including ALL secrets as plaintext

Our WLC 5508 pair is going EOL. I need to migrate the complete configuration (including secrets) to a new pair of CT3504 WLCs. The problem I have is when I run show run-config commands, username / ...
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42 views

What spanning tree IEEE protocol does the Cisco 1252AG Aironet access point support?

Link to data sheet We're running Cisco IOS version 15.2(2)JA1. What version of the IEEE STP is supported on the Cisco Aironet 1252AG access points? We are using the "bridge X protocol ieee" command. ...
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16 views

How to save authorization infos on UniFi Network Controller?

We have two "Ubiquiti UniFi UAP AC LITE Router". They are great! But ex.: annually, I want to upgrade the firmware on them. For this, I quickly install an Ubuntu LTS in a virtual machine, install ...
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1answer
34 views

Stable connectivity in a high-density residential WiFi environment? [closed]

I live in a densely populated area and my devices see 10-20 wifi networks at any given time. Once in every few minutes a ping to my router goes up to the point of timeout and the device loses the ...
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1answer
106 views

Has anyone successfully deployed WLC 8.3+ anchored wlan with PSK and CWA?

There seems to be something broken with Cisco WLC 8.3.140 and 143. 8.3 was the first AireOS release training to add MAC Filtering (CWA) and PSK. ISE is serving as the RADIUS server (v2.2). I can get ...
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2answers
62 views

wifi and vlans problems

I was given the task to come up with network design to change the existing one that we have since we are running a single network in the company with no VLANs in place to separate de departments. On ...
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2answers
43 views

How many public static ips do one need if a PC is behind a wireless router?

If a PC is connected to internet through a wireless router. How many public static ips do one got to get from the ISP. Do the router and PC both require one static IP. What if I want to add more PC ...
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28 views

Does mandatory/supported data rate prevent low speed clients from joining?

Let's say i have configured my wireless environment with following data rates: 6 Mbit/s -> Disabled 9 Mbit/s -> Mandatory 12 Mbit/s -> Supported 24 Mbit/s -> Mandatory 36 Mbit/s ...
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2answers
125 views

Wireless Multipoint Bridging / Backhaul Gateway Antenna and AP Selection

My company is replacing an old wireless bridging system with new 802.11ac gear. Layout is a central building with 4 remote buildings within 180 degrees line of sight. Bridging only. I think that I ...
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1answer
44 views

How cellular networks gets internet? [closed]

Mobiles get internet but how? From the towers, we used to get signals and communicate with others like calling or a message but coming to the internet how in the terms of networking terms like radio ...
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50 views

What is the difference between Power control and Power allocation? [closed]

In the context of wireless communication (specifically device-to-device communication) what is the difference between Power control and Power allocation. I guess the latter is a form of resource ...
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1answer
88 views

RV260W as Access Point

We recently upgraded to a proper firewall, with some help from this community, and are now looking to repurpose our RV260w as a wireless access point. I tried already, but I was trying to use the WAN ...

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