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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Is it possible to use multiple authentication methods on single ESSID? [closed]
Our organization has 2 wireless networks, and internal ESSID with WPA2 Enterprise w/ AD, and a Guest network that uses Webauth. We have some portable devices we'd like to use on the network, but they ...
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Recover Aironet AP-ESC doesn’t seem to break c2602 boot sequence
I am trying to reuse an old Cisco Aironet c2602 Autonomous AP; I need to reset the password. CCO instructions say that I need to hit ESC repeatedly while I am on the console during the AP boot ...
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Cisco WDS, FreeRadius and LEAP
Freeradius got rid of LEAP since some pointrelease of 3.2.x, and I'm stuck configuring Cisco WDS on their Aironet series.
Since forever there was a tweak with LEAP in Cisco configuration like this:
...
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aruba access point join uptime and device uptime
just a question how do you determine from the controller the AP device uptime and join uptime to the controller? I'm confused when I run "show ap database". I can see the AP uptime, was that ...
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Sanity Check: Changing MTU on Wifi Endpoints (computers) should be a LAST resort, right?
A client of mine has an organizational network that is comprised of a lot of Ubiquity gear, primarily switches and wireless routers to power their network, with a Sophos XG firewall at the border.
...
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Router to Wireless router (Packet Tracer)
Hi, Can anyone help why I can't ping from my pc in office network to my laptop in guest network or wireless network. It is possible to ping from guest network to office but failed vice versa.
Main ...
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Internet speed over wifi through walls
I understand that my internet speed over Wi-Fi will deteriorate over distance , especially through walls.
My question is, will speeds drop to a set value, or will it drop as a percentage of the ...
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Was Bluetooth AMP actually used?
Bluetooth AMP (Alternative MAC/PHY) is a way for bluetooth of using the 802.11 MAC/PHY, e.g. Wi-Fi, as a transport to send "High Speed" data, hence the "HS" in the "Bluetooth ...
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Active vs Passive scanning in Wireless Networks
I read that there are two ways a wireless client can scan for a wireless network.
By sending probe requests and listening for a response by APs within range (Active Scanning)
By waiting and listening ...
- 759
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Authenticating APs and WLCs
I am currently learning about WLCs and Lightweight APs.
My book mentions that every AP and WLC must authenticate each other with digital certificates, and that a X.509 certificate is preinstalled in ...
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What datalink protocol is used in aircraft to ground station communication? [closed]
Laptops, mobile devices, and smart TVs communicate to access point via WiFi.
Wireless peripherals (mouse / keyboard) communicate to workstations via Bluetooth.
Mobile phones communicate to base ...
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Stretching VLANS across a network infrastructure
I am learning about Autonomous and Lightweight APs at the moment and I came across this slide from a course that I follow.
This specific line
I know that this problem can be solved by using ...
- 759
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37
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Extended Service Set in Wireless Networks
I am learning about the different kinds of service sets in Wireless networks and I have a few questions about the ESS.
If the BSSs had the same settings but different SSIDs, would this still be ...
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Can 2 devices communicate on the Internet at the same time using WiFi?
I am currently learning about Wireless networks and I have read that Wireless Networks are Half-Duplex and all devices receive the frames sent by other devices just like with Ethernet hubs.
Does this ...
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WiFi versus Wireless LANs
I've just started learning about Wireless networks and I have a question about the terms "WiFi" and "Wireless LAN".
Whenever I think of WiFi, I think of connecting wirelessly to ...
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Inability to access wireless printer on same wireless LAN from a wireless device on another frequency
I am not sure whether this question should be on Server Fault or on Network Engineering. In order to ask my question, I first need to describe the problem I am facing:
Say I have a LAN 10.0.0.0/24 and ...
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Network Oversubscription
I am just joining my firm, and there is already an issue I am taking a look at. I am not part of the networking team but want to contribute as much as I am able.
Our firm is experiencing a drastic ...
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Does each computer/smart phone use electromagnetic wave with different frequency to communicate when they're connected to a WLAN?
I read some papers about WLAN and Wi-Fi. They say that modern WLAN/Wi-Fi uses a kind of technology called "OFDM(Orthogonal Frequency Division Multiplexing)".
My understanding is: ODFM means ...
user85401
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Packet tracer help with routing between multiple company routers with vlans and wireless routers
Im still quite a novice to packet tracer (so im sorry if this has been answered) and I'm trying to ping both vlans at company1 router to both Lans at company2 router but for some reason when the ...
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Why is ICMP placed in transport layer in 6TSCH protocol stack?
my whole college education I was sure that ICMP protocol is a Network Layer protocol. I am now working with 6TSCH protocol and it's stack contains ICMPv6 in a Transport Layer, for example in this RFC: ...
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Wifi 802.11ac dynamic channel width negotiation
Let's assume that
AP1 is on channel 40 width 80mhz,
AP2 is on channel 48 width 80mhz,
It overlaps.
As far as i understand 802.11ac has a functionality which detects width utilization per-frame and ...
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107
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Relation between mean delay and network size
I am studying the effect of network size on the mean delay per received packet of a wireless sensor network. I am using a duty-cycled asynchronous MAC protocol.The topology is all sources directly ...
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3
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Do telephone calls work at Layer2?
We know that Wi-Fi works in both layer1 and layer2 and travel through air in layer1.
My question is when we create mobile phone call during connection establishment phase sender Mac address and ...
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Why is microwave faster than infrared as a transmission medium?
I've read¹ that microwave is a faster medium of transmission of data than infrared.
But considering that infrared waves have higher frequencies (and a little bigger frequency range too) than microwave,...
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WAP configuration consistency
Simple question, are WAPs always configured from the default gateway's web interface? Do you ever have to go somewhere else?
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How to measure the SINR for channel bonding?
I use to have a set up of a WiFi environment where I assume all devices operating over the same wireless channel, i.e., a single 20 MHz channel. A device would treat the transmission of all ...
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Is the EAP-Request/Identity and EAP-Response/Identity transmitted in the clear in a WPA2 entreprise Wi-Fi setup?
Looking at the WPA2 (Entreprise, let's say PEAP-MSCHAPv2) Wi-Fi protocol, I understand that since WPA2 uses Open System Authentication, and that 802.1X authentication takes place before the 4-way ...
user71928
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1
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CAPWAP traffic flow
when a client wants to send inter-VLAN traffic, does this mean that the traffic first goes from the AP to the Wireless Controller (WLC) through CAPWAP tunnel, and then the WLC sends it to the default ...
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How effective is CSMA/CA for WLAN and when do collisions still happen?
I understand why CSMA/CA in WLAN is required over CSMA/CD from this post here and was left with the question how effective CSMA/CA is.
So I was wondering if there still might be collisions at all. I ...
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Overlapping IP addressing on dynamically assigned wireless VLANs (can Fortigate do this?) [closed]
Broad question touching many vendors.
CONTEXT DESCRIPTION
For a project of a client of mine (I'm giving the context to make things clearer, please don't reply with "get a professional", I'm ...
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Why use subnet mask /30 for the internet port of the edge router? [closed]
In the following network, why should we pick the subnet mask /30 for the internet port of Edge Router 1? Since the wireless access point Edge Router 1 needs to connect to 3 hosts in LAN 1, a subnet ...
user68723
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How do wireless access points work? [closed]
I understand what the intent of wireless access points are but I am struggling to understand them fully on a deeper level. So, do wireless access points have their own network with their own IP ...
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Does a WiFi client vary the strength of the signal it emits? [closed]
I am using a metal container to dampen my WiFi router in the hope of reducing its radiation health risks.
I'm wondering if the client device might increase its own emitted signal strength to ...
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4
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374
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How to add two VLANs for DHCP Pool
Currently one of my customer has DHCP pool created in Cisco Switch and ip address range is 192.168.25.0/24 (This is a VLAN). Now they have 230 devices and They are going to increase device count by ...
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A possible solution to offloading clients on an existing network
I am working with an existing network that services approximately 1500 rural wireless clients [diagram: Customer], and it uses a single core Arista 7050T layer3 switch [diagram: Main Router] hooked up ...
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how ieee 802.11s does channel switching? is it supported?
I'm studying about IEEE 802.11s wireless mesh networks
every where on documents i read is pointed that all Mesh Point must be on same channel for discovery and peering.
But i can't find anything about ...
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High RX Pause Frame on Cisco 2960X
I have a Ruckus R310 that connected to Cisco 2960X and I saw a high RX pause frame.
show flowcontrol interface gi1/0/1
Port Send FlowControl Receive FlowControl RxPause TxPause
...
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How to determine which Wifi channel offers the least interference?
I'm trying to set up a roaming wireless network. For this, I have tried to analyze the area of coverage for any external network interference.
I do know that networks can change over time and Wifi ...
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Possible to denylist individual WiFi AP device, but not SSID? [closed]
In a situation where a network of WiFi access points all serve the same SSID, is there a mechanism to configure WiFi client devices to connect to the SSID but ignore an individual AP?
Specifically, I'...
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Loop detection in Extreme switch
I am facing problem since a month in my wireless network. I have extreme switch in my office and with switchport 22 i have given to backhaul with wireless vlan to it, the problem is that my switchport ...
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pFsense, Unifi AP, HP switch and VLANS
I have a Unifi AP with a single MYNET SSID connected to my HP 2520 switch on port 23. I have a pfSense LAN interface connected on port 1. AP clients get DHCP (192.168.1.0/24) from pfSense and can ...
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In wireless networks, how do Service Sets and Basic Service Sets relate to each other, if they do?
I am beginning to learn about networks and wireless networks, specifically, and am having trouble grasping how do Service Sets and Basic Service Sets relate to each other, if they do.
Are Basic ...
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How to configure IP addresses in cisco packet tracer?
Hello I am working with Cisco packet tracer. I have two laptops connected to a wireless router with IP addresses assigned using DHCP. The router's Internet IP address is 10.1.0.0 and the LAN address ...
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How select and implement proper wireless security mechanism?
I am having issue regarding wireless security Mechanisms.
WEP, WPA and WPA2
TKIP,EAP, LEAP, PEAP, EAP-TLS, EAP-TTLS and CCMP
How do we implement these security mechanism effectively on ...
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Where does the 4way handshake fit in with the 802.11 Authentication Frame
In an open network you have the authentication frame on just the 802.11 level:
but if the network has WEP or WPA(2/3) there will also be a four way handshake:
My question is, where does the 4 way ...
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When a phone sends a series of zeros over radio waves to a cell tower, how does the tower know how many in a row it is?
So if a 1 is represented by 100 MHz and 0 is 50 MHz, 101 would be 100 50 100. But if the phone sent let’s say 5 zeros in a row, how can the cell tower know if it was one zero or 3 or 5 or 7 since they’...
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1941W wireless clients losing DHCP IP address [closed]
I am attempting to 'extend' a 192.168.1.0\24 network with an experimental network 192.168.10.0\24 using a 1941W router.
I have configured 1941W to distribute a 192.168.10.0\24 network, with WLAN ...
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How does the network client pick a wifi signal, given two available frequencies?
This might be basic, but I don't know the answer...
Given a router and a client, both having 2.4G (slower, more range) and 5.XG (faster, less range) frequency radios (and both named with the same SSID ...
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Mesh network 802.11s vs adhoc
What is the difference between 802.11s and adhoc?
Is it compulsory to have same channel for wireless mesh node or it can have created using different channels where neighbouring nodes on on 2 non ...
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Different APs can be assign gateway from different brand
Edge-core EWS101 can be assign as gateway for EnGenius ENS202 APs ?
Different brands will be work as gateway for wireless controller ?
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