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11 votes
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How is the Groupwise Transient Key used in WiFi networks?

Why then does the client need to encrypt the broadcast using the GTK? It doesn't. Since the AP broadcasts, not the client, the client doesn't use the GTK to encrypt the frame. The AP does. Why can'...
YLearn's user avatar
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7 votes
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Unifi AC LR vs Lite?

You cannot light such a building with a single WAP. You need to do a site survey and plan how to distribute WAPs across the building to provide coverage. Each WAP requires a wired uplink. The main ...
Zac67's user avatar
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6 votes
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What's the difference between DHCP Disabled or Relay on an access point?

DHCP Enabled - Dynamically IP address is released (allocated) for Users on Network. DHCP Disabled - Automatic IP address allocation is disabled, Need to provide manual and Static IP address ...
infra's user avatar
  • 3,138
5 votes
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How well does 802.11k actually perform on large-scale networks?

We have been running 802.11k (and 802.11v) on our campus network (~9200 AP's) for close to a year. We are using a controller based Wi-Fi infrastructure (Aruba Networks). Our wired network ...
Neil Johnson's user avatar
5 votes
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Is it possible to build a LAN with just Access Points?

Yes, it's possible. Your wireless clients can communicate with each other (although on some consumer devices, you have to explicitly allow this).
Ron Trunk's user avatar
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5 votes

How is the Groupwise Transient Key used in WiFi networks?

A WAP doesn't convert a broadcast frame into unicast frames to each individual Wi-Fi client. It sends a single broadcast frame to all the Wi-Fi clients at the same time. Sending a frame to each client ...
Ron Maupin's user avatar
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5 votes
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Need help/advice on basic network setup involving security cameras, guest access, and VLANs

You're on exactly the right track. The basic of VLANs are very simple A switch can be partitioned into separate VLANs Now we have to say which VLAN each port is connected to; this is called an "...
jonathanjo's user avatar
  • 16.3k
4 votes

How do behave the AP during monitoring mode?

Monitor Mode provides constant channel scanning with attack detection and forensics (packet capture) capabilities. Capture packets regardless of connected network. No association to AP needed (and no ...
Datagram.Network's user avatar
4 votes

Is it possible to build a LAN with just Access Points?

A LAN is a layer-2 network, and all hosts on a LAN are peers. Routers route between networks, not from a LAN back to the same LAN. Switches and WAPs are bridges that operate on layer-2 LANs, and ...
Ron Maupin's user avatar
  • 99.9k
4 votes

Does preventing 802.11b clients from associating to an 802.11b/g access point reduce access point range for 802.11g clients?

Generally, no. Listing one of the 11g rates as mandatory prevents 11b clients from associating, but other, lower rates can be listed as optional. However, the lowest rate for 11g (ODFM) is 6 MHz, ...
Ron Trunk's user avatar
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4 votes

How to limit number of wireless clients on Cisco access point?

Yes, you can do that. It is called max-associations option under ssid configuration section and can be done per SSID. Let us say you want to set the maximum number of devices that can associate using ...
Hung Tran's user avatar
  • 3,754
4 votes

Cisco Wifi access points roaming

Apparently, you don't actually have a controller, which would make things very simple. But briefly: You need to configure each access point with its own IP address. Each access point will use a ...
Ron Trunk's user avatar
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4 votes
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Is there any relation between MAC addresses of a dual band (2.4 and 5 GHz) router?

A company will register with the IEEE to get an OUI (Organizationally Unique Identifier). Beyond that, the company is free to assign MAC addresses within the OUI as it sees fit. There are no outside ...
Ron Maupin's user avatar
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4 votes
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Can I setup a WLAN with just a Access Point and Switch

You certainly can do it: + . . . . . . . . + . . . . + . . wifi | | | AP cam cam | ===+=========...
jonathanjo's user avatar
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4 votes
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How can I legally get a software upgrade for my Cisco Wireless controller without a service contract so it supports my more recent access-point?

Cisco's policy is to offer free software upgrades for security vulnerabilities. They only let you get the feature set you already have, and they give you the smallest "feature version" ...
Darrell Root's user avatar
  • 2,203
4 votes

Network Oversubscription

You can roughly divide your troubleshooting into two areas: wired and wireless. For wireless issues, the potential problems are: Channel contention. Simply put, the more users that are vying for ...
Ron Trunk's user avatar
  • 67.7k
4 votes

Network Oversubscription

First recommendation: Leave it to the people getting paid to manage and improve it. If they need your help, they will ask for it. If you really want to contribute, go to them directly and ask if you ...
FrameHowitzer's user avatar
3 votes
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Wireless controllers and access points

The controller function (not necessarily a dedicated device by the way) is essential to how any wireless network bigger than what you have at home works. It allows you to configure large sets of APs ...
Jeremy Gibbons's user avatar
3 votes
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Wireless access point to switch connection

1) Should I connect Wireless access point to a trunk port on the switch That depends. Are you using a single SSID and comfortable with the WAP management address on the same network as the wireless ...
Ron Maupin's user avatar
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3 votes
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Can one WIFI AP affect the others' performance?

Access points don't "wear out." Generally speaking, they either work or they don't. That being said, if your old AP can't run newer protocols, it will keep others from operation at higher data ...
Ron Trunk's user avatar
  • 67.7k
3 votes

Is it possible to build a LAN with just Access Points?

Yes, you can. Computers in this case are in the same network, and they can communicate with each other through the AP.
Nina's user avatar
  • 430
3 votes
Accepted

Is it possible to setup multiple Networks on a single Access Point?

As put in Cisco Networking for Dummies article on Multiple SSIDs with a Single Access Point (AP) (link) The Service Set Identifier (SSID) defines what is thought of as the wireless network. So if you ...
Nina's user avatar
  • 430
3 votes
Accepted

Cisco router under workgroup bridge AP

The trick is getting the router to appear on 10/24. DHCP and secondary addressing requires a bunch of VLAN Magic(tm). Assuming no one wants to get that messy... adding routes on the router and ap ...
Ricky's user avatar
  • 32.3k
3 votes

DHCP on Access Point vs DHCP on Router

DHCP server doesn't consume many resources, you will have very little gain by removing it from the router, and it will be more difficult to manage. but anyway, according to this documentation, page ...
JFL's user avatar
  • 19.7k
3 votes

3502i no console output, how to properly diagnose?

The LED blinking pattern indicates the AP is in discovery mode, so it sounds like the IOS image is valid. I suspect either your baud rate isn't right, or there's a problem with the console interface. ...
Ron Trunk's user avatar
  • 67.7k
3 votes
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Do APs talk to each if a client is nearer to the other one? (sticky-client-problem)

Do two autonomous APs talk to each other? No. They are completely independent entities. In this case, the client chooses which to use. In a managed environment (lightweight access points with a ...
Ricky's user avatar
  • 32.3k
3 votes

500+ concurrent clients for one access point

What does it mean by this? It means it can have 500+ clients connected at the same time. It makes no claims about the performance with 500+ clients, but the hardware/software of the AP itself can ...
YLearn's user avatar
  • 27.4k
3 votes

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

Does WiFi broadcast traffic from a station go through the access point? In infrastructure mode, clients typically only send traffic to the AP (ignoring exceptions such as 802.11z capable clients). As ...
YLearn's user avatar
  • 27.4k
3 votes

Wireless Controller 5520 Creating a dynamic interface

I found the answer - I googled "Note: Changing the Interface parameters causes the WLANs to be temporarily disabled and thus may result in loss of connectivity for some clients." it lead me to ...
bob's user avatar
  • 51

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