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View solution in original post. In the past, Android supplicants have never cared about trusting the Authenticating Server e. ISE - this was seen as a blessing ease of use and a curse bad security for the end user, since you don't know who you're talking to Is there a solution providing by Cisco for an automatic enrollment of Android devices for server certificate validation?

Any recommended on-boarding solution is there to push a local CA public key to client Android 11 device root certificate store. I had this problem also and it drove me nuts. Here's how I fixed it.

It won't work don't bother. I spent a good portion of 3 days and wildcard certs just don't work with Windows Public Domain lets say it is jabbathehut.

I used jabbathehut. I then went to SSL. Yes we added an additional suffix to all users in Active Directory. We added the. This is done in Active Directory Domains and Trusts. Just right-click AD Domains and Trusts and add whatever suffix you want. Once ssl. I did not need to restart NPS services. Simply click OK and it applies. Then on the android 11 phone I attempted to connect to the wifi. I entered a user account jabbaminion1 jabbathehut.

It connected straight away. Once this was proven, I repeated the same steps with our regular goDaddy certificate provider and bought one. Exactly the same steps. Now since we have 2 NPS servers, I exported the working certificate on the 1st nps server. Easy pz. The latter two radio technologies used microwave transmission over the Industrial Scientific Medical frequency band at 2.

Legacy Since the 2. However, this high carrier frequency also brings a disadvantage: the effective overall range of In theory, In practice, The dramatic increase in throughput of Devices using Devices operating in the 2. As unlicensed intentional radiators in this ISM band , they must not interfere with and must tolerate interference from primary or secondary allocations users of this band, such as amateur radio.

In June , a third modulation standard was ratified: This works in the 2. The then-proposed Details of making b and g work well together occupied much of the lingering technical process; in an Like In , task group TGma was authorized to "roll up" many of the amendments to the version of the REVma or Upon approval on 8 March , Support for 5 GHz bands is optional.

In May , task group TGmb was authorized to "roll up" many of the amendments to the version of the In addition much cleanup was done, including a reordering of many of the clauses. The Wi-Fi Alliance separated the introduction of ac wireless products into two phases "waves" , named "Wave 1" and "Wave 2".

Wave 2 products include additional features like MU-MIMO, MHz channel width support, support for more 5 GHz channels, and four spatial streams with four antennas; compared to three in Wave 1 and This frequency band has significantly different propagation characteristics than the 2. Products implementing the The certification program is now being developed by the Wi-Fi Alliance instead of the now defunct Wireless Gigabit Alliance.

TP-Link announced the world's first In addition, existing MAC and PHY functions have been enhanced and obsolete features were removed or marked for removal. Some clauses and annexes have been renumbered.

Due to the favorable propagation characteristics of the low frequency spectra, The protocol intends consumption to be competitive with low power Bluetooth , at a much wider range. This extends some of the mechanisms in Some clauses and annexes have been added. The motivation behind this goal was the deployment of WLAN in dense environments such as corporate offices, shopping malls and dense residential apartments.

This is equivalent to cellular technology applied into Wi-Fi. The IEEE It is an amendment that defines a new physical layer for It will be an extension of the existing 11ad, aimed to extend the throughput, range, and use-cases. The main use-cases include indoor operation and short-range communications due to atmospheric oxygen absorption and inability to penetrate walls.

The peak transmission rate of The expected range is m. Across all variations of However, this does not apply to typical deployments in which data is being transferred between two endpoints, of which at least one is typically connected to a wired infrastructure and the other endpoint is connected to an infrastructure via a wireless link.

This means that, typically, data frames pass an Due to the difference in the frame header lengths of these two media, the application's packet size determines the speed of the data transfer.

This means applications that use small packets e. Other factors that contribute to the overall application data rate are the speed with which the application transmits the packets i. The latter is determined by distance and by the configured output power of the communicating devices. The same references apply to the attached graphs that show measurements of UDP throughput. Each represents an average UDP throughput please note that the error bars are there but barely visible due to the small variation of 25 measurements.

Markers for traffic profiles of common applications are included as well. These figures assume there are no packet errors, which, if occurring, will lower the transmission rate further. These are commonly referred to as the "2. Each spectrum is sub-divided into channels with a center frequency and bandwidth, analogous to how radio and TV broadcast bands are sub-divided.

The 2. The latter channels have additional restrictions or are unavailable for use in some regulatory domains. The channel numbering of the 5. These are discussed in greater detail on the list of WLAN channels. In addition to specifying the channel center frequency, One consequence is that stations can use only every fourth or fifth channel without overlap. Availability of channels is regulated by country, constrained in part by how each country allocates radio spectrum to various services.

At one extreme, Japan permits the use of all 14 channels for Other countries such as Spain initially allowed only channels 10 and 11, and France allowed only 10, 11, 12, and 13; however, Europe now allow channels 1 through It is more correct to say that the overlapping signal on any channel should be sufficiently attenuated to interfere with a transmitter on any other channel minimally, given the separation between channels.

Due to the near—far problem a transmitter can impact desensitize a receiver on a "non-overlapping" channel, but only if it is close to the victim receiver within a meter or operating above allowed power levels.

Conversely, a sufficiently distant transmitter on an overlapping channel can have little to no significant effect. Confusion often arises over the amount of channel separation required between transmitting devices.

This occasionally leads to the belief that four "non-overlapping" channels 1, 5, 9, and 13 exist under However, this is not the case as per This does not mean that the technical overlap of the channels recommends the non-use of overlapping channels. The amount of inter-channel interference seen on a configuration using channels 1, 5, 9, and 13 which is permitted in Europe, but not in North America is barely different from a three-channel configuration, but with an entire extra channel.

However, overlap between channels with more narrow spacing e. IEEE uses the phrase regdomain to refer to a legal regulatory region. Different countries define different levels of allowable transmitter power, time that a channel can be occupied, and different available channels. In extreme, one link is fully loaded while the others are completely idle. For this reason, an even load balancing and full utilization of all trunked links is almost never reached in real-life implementations.

More advanced switches can employ an L4 hash i. Multiple switches may be utilized to optimize for maximum throughput in a multiple network switch topology , [12] when the switches are configured in parallel as part of an isolated network between two or more systems. In this configuration, the switches are isolated from one another.

One reason to employ a topology such as this is for an isolated network with many hosts a cluster configured for high performance, for example , using multiple smaller switches can be more cost effective than a single larger switch.

If access beyond the network is required, an individual host can be equipped with an additional network device connected to an external network; this host then additionally acts as a gateway. The network interfaces 1 through 3 of computer cluster node A, for example, are connected via separate network switches 1 through 3 with network interfaces 1 through 3 of computer cluster node B; there are no inter-connections between the network switches 1 through 3. The Linux bonding driver mode typically employed in configurations of this type is balance-rr; the balance-rr mode allows individual connections between two hosts to effectively utilize greater than one interface's bandwidth.

For example, this allows a central file server to establish an aggregate 2-gigabit connection using two 1-gigabit NICs teamed together. Microsoft Windows Server supports link aggregation natively.

Previous Windows Server versions relied on manufacturer support of the feature within their device driver software. In addition, there is a basic layer-3 aggregation available at least from Windows XP SP3 , [20] that allows servers with multiple IP interfaces on the same network to perform load balancing, and home users with more than one internet connection, to increase connection speed by sharing the load on all interfaces.

With the modes balance-rr , balance-xor , broadcast and The modes active-backup , balance-tlb , and balance-alb can also be set up with two or more switches. But after failover like all other modes , in some cases, active sessions may fail due to ARP problems and have to be restarted.

However, almost all vendors have proprietary extensions that resolve some of this issue: they aggregate multiple physical switches into one logical switch. The Split multi-link trunking SMLT protocol allows multiple Ethernet links to be split across multiple switches in a stack, preventing any single point of failure and additionally allowing all switches to be load balanced across multiple aggregation switches from the single access stack. These devices synchronize state across an Inter-Switch Trunk IST such that they appear to the connecting access device to be a single device switch block and prevent any packet duplication.

One path may have a slightly longer propagation time but the standard has been engineered so this will not cause an issue. Aggregation mismatch refers to not matching the aggregation type on both ends of the link. Some switches do not implement the Therefore, link aggregation between similarly statically configured switches will work but will fail between a statically configured switch and a device that is configured for LACP.

In analog modems, multiple dial-up links over POTS may be bonded. Throughput over such bonded connections can come closer to the aggregate bandwidth of the bonded links than can throughput under routing schemes which simply load-balance outgoing network connections over the links.

These are typically 6 or 8 MHz wide. Broadband bonding is a type of channel bonding that refers to aggregation of multiple channels at OSI layers at level four or above. Channels bonded can be wired links such as a T-1 or DSL line. Additionally, it is possible to bond multiple cellular links for an aggregated wireless bonded link. Previous bonding methodologies resided at lower OSI layers, requiring coordination with telecommunications companies for implementation.

Broadband bonding, because it is implemented at higher layers, can be done without this coordination. I also tried setting at the top of the cups.

I'm just trying to add a printer using the web interface, but something about the permissions doesn't allow my user credentials to work. I had to combine two other answers for Ubuntu, and the solution is to add myself to the lpadmin group:. Update: On Fedora 25 this is now default Look for the line with SystemGroup sys root add wheel to it.

I wrote a more detailed article on how to debug such issues. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more.

Cups "add printer" page returns forbidden on web interface Ask Question. Asked 6 years, 8 months ago.