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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23 views

Range of SSDP messages [on hold]

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) ...
2
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1answer
25 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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17 views

MDNS response “storm” with “localhost_prl: 127.0.0.1” [on hold]

We are experiencing occasional performance problems in our WIFI. With Wireshark I see a high number (currently 50/s) of MDNS responses for localhost_prl:127.0.0.1. I don't think that this is normal. ...
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17 views

Which WiFi 802.11b interference is more destructive? [on hold]

I am curious after using 'WiFi Analyser' App on Android phone. The App shows various AP's that are in the range of your cell phone over the Wireless LAN. It shows APs SS-IDs , their channel number ...
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10 views

WatchGuard interface with secondary router holding WiFi splash page

I have a captive portal splash page I need to be presented to only 1 Open Wireless SSID on a WatchGuard AP controlled via the XTM330. The WatchGuard is not able to present the required splash page ...
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32 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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6 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
21 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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0answers
25 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
53 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
31 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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22 views

Modbus Wireless

What is necesary to implement a modbus over wireless? I know that ethernet and modbus have different application layer different which evolves different package format and different physical ...
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0answers
20 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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20 views

How does UMTS scrambling code work?

In my textbook it is stated that in a UMTS network, scrambling codes (Gold codes) are used to differentiate signals from different cells in the downlink channel, and signals from different user ...
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2answers
113 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
39 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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0answers
30 views

Will LoRa work from Earth To Stratosphere?

I'm unsure if this is the most suitable exchange however I thought it seemed most fitting personally, please correct me if im wrong. I was wondering if LoRa would work to transmit GPS data from my ...
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0answers
31 views

What is the difference between Power control and Power allocation?

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 ...
2
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1answer
38 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 ...
3
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1answer
72 views

Effect of physical travel on wireless connectivity [closed]

Given a stationary wireless router and a wireless device traveling from point A to B--passing directly by the router along the path--is there a speed at which the wireless device could travel to cause ...
2
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0answers
50 views

RPL: questions on routing mechanism

I'm studying RPL and two questions came to my mind: 1: Both in storing and non-storing modes, if a node wants to send a packet to another node via P2P communication paradigm, then how does the ...
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1answer
44 views

Routing in Wireless Ad-Hoc Networks

Let's say I have a mesh of sensors forming a wireless ad-hoc network. If one sensor wants to send data to the sink, it will transmit a packet via WiFi for example. My assumption is that there's no ...
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0answers
53 views

AIR-AP1832I-E-K9C no CiscoAirProvision SSID is showing?

Just trying to setup a AIR-AP1832I-E-K9C but no CiscoAirProvision SSID is showing? Anyone know what to try as the Mobility Express manual only has 4 steps and I have done them all and can't go any ...
3
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1answer
76 views

Does IEEE 802.11 allow soft-combining?

Out of purely theoretical curiosity, I was wondering whether the IEEE specification for WIFI allows for ARQ with soft-combining. I found a number of publications describing the benefits of soft-...
2
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0answers
78 views

Ad hoc vs Mesh, which one to use?

Say we have four nodes (A, B, C, D) that are arranged in a chain-like topology. A <-------> B <-------> C <-------> D Only the adjacent nodes are in range of one another (A can ...
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1answer
44 views

What does a LoRa Gateway actually do?

I have tried researching this question but I'm not quite fully understanding the benefits or true reasoning for having a Gateway. If you have two LoRa RA-02 modules they can communicate with each ...
2
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1answer
40 views

Wireless Controller 5520 Creating a dynamic interface

I'm hoping to determine the least intrusive way to configuring my WLC. I am working through the GUI interface and have created a new dynamic interface [Controller-> Interfaces] When I went to ...
2
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2answers
648 views

Cisco 899G-LTE Cellular 0 interface in spoofing mode

I have a problem. After I've reseted my router configuration it doesn't get IP from LTE SIM card. Seems like my celullar0 interface is in spoofing mode. > Router#show interfaces cellular 0 ...
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2answers
54 views

Make devices visible under Access Point

In our network, all wired PCs have a direct access to internet (83.XX.XX.XX) and a secondary IP address on the same NIC in order to access a subnetwork (192.168.10.XX) with wired peripherals (scanners,...
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1answer
23 views

WAP power profile?

Context The company I work for provides for its workers an ethernet and, for temporary visitors, a limited bandwidth/time wifi. There is a new trend in France: Wifi and RF are the devil. Question ...
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1answer
136 views

will wireless devices' MAC address be saved on layer 2 switch?

So I know that basically switches work like this (assuming 2 PCs are connected via Ethernet port) - the switch will store the mapping of the 2 PCs' MAC address and the switch ports in which they ...
6
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1answer
169 views

Why do we have authentication before association in 802.11

Why does client authenticate before associating with the AP. What does open system authentication even achieve. I fail get an accurate reason from my web searches. Best reason I do get is unlike wired ...
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2answers
65 views

What is the purpose of 802.11 authentication?

Why does client authenticate before associating with the AP. What does open system authentication even achieve. I fail get an accurate reason from my web searches.
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4answers
492 views

Are “ad-hoc” networks always wireless?

We see that almost always the term of "ad-hoc networks" comes with WSN (Wireless Sensor Network). Does it mean an ad-hoc network must be always wireless? If we define an ad-hoc network as follows: ...
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1answer
54 views

Conversion of WLAN traffic to the outside world

Preamble: I don't have that much experience with lower level computer networking yet. I am currently trying to wrap my head around the workings of the WLAN protocol. While I am starting to get the ...
2
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1answer
174 views

Is it possible to use 802.11n to send multicast?

I have tried to set the wifi multicast rates and find that all the multicast packets are send by 80211g, so that the max rate is 54M. Can I use the 80211n to achieve higher rate?
3
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1answer
125 views

Need help/advice on basic network setup involving security cameras, guest access, and VLANs

At some point, I'd like to move from a single, flat, network to having a more secure network using VLANs. I have an idea of what I would want, I just don't fully understand some details of Native ...
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1answer
47 views

How is it possible to communicate between two antenas supporting 20km and 5km distance at 5GHz frequency?

Is it possible to link two antennas supporting different distances 20km and 5km in full duplex mode? If Antenna A such as Ubiquiti Rocket can support 20km distance using 5GHz frequency and Antenna B ...
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3answers
64 views

Do throughput rates include corrupt packets? Is throughput = packet loss + good packets or is throughput = good packets?

Normally network devices/software show some kind of current throughput. For example my home router shows the throughput for each connected device in its web interface. Or every web browser when ...
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1answer
21 views

Decentralized instance communication [closed]

I intend to build an application that will run on several devices and its main task is storing and presenting data. This application will be deployed to several devices. These various instances should ...
2
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2answers
158 views

802.11X family security protocol identification stage

In what stage (Probing?) in the connection process does the AP "tells" the host it's security protocol? (e.g. "I'm using WEP,WPA etc.) I've sniffed a packet using wireshark but I can't find any ...
5
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2answers
29 views

Putting directional antennae on 2602e, one on the A port, one on the B port and one on the C port to cover 3 different aisles

on setting up the access point I have put one directional antenna on the 2602e A port to go down on aisle, one on B to go down another, and finally one on C to go down a third aisle. Is this a bad ...
3
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2answers
150 views

connection to AP after what stage? 802.11b protocol

I'm seeing several devices trying to connect to an AP (using wireshark), several send and receive the "Probe response" message (802.11) But the don't even send the association request. Why is that? ...
3
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1answer
39 views

Can I setup a WLAN with just a Access Point and Switch

Is it possible to setup a WLAN with an Access Point and a Switch only? I would like to connect wireless devices wireless to the access point which is connected to the switch. Then, have another ...
4
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3answers
583 views

Is there any relation between MAC addresses of a dual band (2.4 and 5 GHz) router?

I have a use case where I need to determine whether two MAC addresses belong to the same router with dual band connection 2.4 GHz and 5 GHz. When I did some study, I found that the MAC address of ...
5
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2answers
69 views

How the packet is routed between two host from same sub-net and associated with same AP?

Given host 'A' and 'B' have IP 10.10.0.5 and 10.10.0.8 respectively, the sub-net mask for both are 255.255.255.0, both 'A' and 'B' are associated and connected to the same AP, and the AP is connected ...
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1answer
60 views

Counting the Number of re-transmission for a single UDP packet transmission in IEEE 802.11?

I was working with a client-server project based on UDP and 802.11 as a link and physical layer. There, the client was trying to probe some packets in the wireless channel to gauge channel condition. ...
7
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2answers
415 views

How is the Groupwise Transient Key used in WiFi networks?

In Wifi WPA, I understand that during association, a 802.11 client and AP negotiate a Pairwise Transient Key (PTK), using which the Groupwise Transient Key(GTK) is provided to the station. I ...
3
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2answers
357 views

Does WiFi broadcast traffic from a station go through the access point?

Let's say I've got two devices connected to my Access Point, a laptop and a tablet. If the laptop sends unicast traffic to the tablet, I understand that it must go through the AP. However, how is ...
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0answers
33 views

Cisco Wifi phones unregistration from CUCME

I have: two Cisco Wifi access points AIR-AP1832I-E-K9 (AP1 and AP2) and two Cisco wireless phones CP-8821 (P1 and P2). Phone P1 P1 usually connects to AP1 and never connects to AP2 except if it is ...