OCIO offers a variety of public domain, bulk purchase, and site-licensed software to the Ohio State community. Distribution of site licensed software varies according to the application; see below for details.
Site Licensed Software Available Software by Platform. Broad Multi-Platform Agreements.Access to download software from the OCIO site is restricted to current Ohio State University faculty, staff, and students. The right to distribution of site licensed software is limited to the Office of the CIO. Individuals are strictly prohibited from loaning such software or making a copy for anyone else. Distribution MethodsThere is a complete summary of all software available from OCIO at the list above.
Software is distributed via several channels, but all software on our local servers can be requested through our. Software distribution methods include:. Electronic distribution via the software distribution server (start at our ). Additional Site Licensed Software distribution can be obtained from three walk-in areas on campus:. offers the and the.
in Thompson Library is the primary distribution point for software media distributed directly by OCIO that is not available via download. Some software is provided on a media exchange/loan out basis, while other packages can be purchased at discount. If you, you will be notified when it is prepared for pickup. Registered Site License Software coordinators can request certain additional software products for departmental distribution. An SLS Coordinator is authorized through their department chair or unit director to partner with OCIO to distribute site licensed software to end users within their department or unit.
They must be a regular faculty or staff employee. You may request to become a coordinator through our (select 'more options' under the software services order forms).NOTE: If you as the end user wish to send a student or other employee (proxy) to pick up your software, that proxy must provide the BuckeyeBar with a note signed by you authorizing the proxy to get the software media and, if applicable, a properly filled out or an eRequest reference number. The Ohio State University has a Microsoft Campus Agreement for a suite of software for use by faculty and staff on Ohio State-owned equipment. Additionally, faculty, staff, and students have personal-use options on this license. Campus Agreement software is distributed as a license subscription.Learn more about the.Adobe Creative Cloud ETLAThe Ohio State University has an enterprise-wide license for use of Adobe Acrobat Professional (including upgrades) and Adobe Creative Cloud by faculty and staff on Ohio State-owned and personally-owned machines, including student lab use.
Learn more about the.is free for Ohio State students, faculty, and staff to load onto their devices.Site License Advisory TeamSoftware management guidelines are detailed in, and testing and acquisition decisions are aided by the.
An example of a Wi-Fi networkA wireless LAN ( WLAN) is a that links two or more devices using to form a (LAN) within a limited area such as a home, school, computer laboratory, campus, office building etc. This gives users the ability to move around within the area and still be connected to the network. Through a, a WLAN can also provide a connection to the wider.Most modern WLANs are based on standards and are marketed under the brand name.Wireless LANs have become popular for use in the home, due to their ease of installation and use. They are also popular in that offer wireless access to their employees and customers. 54 Mbit/s WLAN PCI Card (802.11g)Wireless LAN hardware initially cost so much that it was only used as an alternative to cabled LAN in places where cabling was difficult or impossible. Early development included industry-specific solutions and proprietary protocols, but at the end of the 1990s these were replaced by standards, primarily the various versions of IEEE 802.11 (in products using the brand name). Beginning in 1991, a European alternative known as HiperLAN/1 was pursued by the (ETSI) with a first version approved in 1996.
This was followed by a HiperLAN/2 functional specification with influences accomplished February 2000. Neither European standard achieved the commercial success of 802.11, although much of the work on HiperLAN/2 has survived in the physical specification for IEEE, which is nearly identical to the PHY of HiperLAN/2.In 2009 was added to 802.11. It operates in both the 2.4 GHz and 5 GHz bands at a maximum data transfer rate of 600 Mbit/s.
Most newer routers are able to utilise both wireless bands, known as dualband. This allows data communications to avoid the crowded 2.4 GHz band, which is also shared with devices.
The 5 GHz band is also wider than the 2.4 GHz band, with more channels, which permits a greater number of devices to share the space.A group formed in 1997 to promote a technology aimed for residential use, but it disbanded at the end of 2002. Architecture Stations All components that can connect into a wireless medium in a are referred to as stations (STA).All stations are equipped with (WNICs).Wireless stations fall into two categories:, and clients.Access points (APs), normally, are base stations for the wireless network. Peer-to-Peer or ad hoc wireless LANAn (not the same as a ) is a network where stations communicate only peer to peer (P2P).
There is no base and no one gives permission to talk.This is accomplished using the Independent Basic Service Set (IBSS).A is another type of network where stations communicate peer to peer.In a Wi-Fi P2P group, the group owner operates as an access point and all other devices are clients. There are two main methods to establish a group owner in the Wi-Fi Direct group. In one approach, the user sets up a P2P group owner manually. This method is also known as Autonomous Group Owner (autonomous GO).
In the second method, also called negotiation-based group creation, two devices compete based on the group owner intent value. The device with higher intent value becomes a group owner and the second device becomes a client. Group owner intent value can depend on whether the wireless device performs a cross-connection between an infrastructure WLAN service and a P2P group, remaining power in the wireless device, whether the wireless device is already a group owner in another group and/or a received signal strength of the first wireless device.A network allows wireless devices to directly communicate with each other. Wireless devices within range of each other can discover and communicate directly without involving central access points. This method is typically used by two computers so that they can connect to each other to form a network.
This can basically occur in devices within a closed range.If a signal strength meter is used in this situation, it may not read the strength accurately and can be misleading, because it registers the strength of the strongest signal, which may be the closest computer. : Devices A and C are both communicating with B, but are unaware of each otherdefines the physical layer (PHY) and MAC (Media Access Control) layers based on (Carrier Sense Multiple Access with Collision Avoidance). This is in contrast to Ethernet which uses CSMA-CD (Carrier Sense Multiple Access with Collision Detection). The 802.11 specification includes provisions designed to minimize collisions, because two mobile units may both be in range of a common access point, but out of range of each other.Bridge A bridge can be used to connect networks, typically of different types. A wireless bridge allows the connection of devices on a wired Ethernet network to a wireless network. The bridge acts as the connection point to the Wireless LAN.Wireless distribution system A (WDS) enables the wireless interconnection of access points in an IEEE 802.11 network. It allows a wireless network to be expanded using multiple access points without the need for a wired backbone to link them, as is traditionally required.
The notable advantage of a WDS over other solutions is that it preserves the MAC addresses of client packets across links between access points.An access point can be either a main, relay or remote base station. A main base station is typically connected to the wired Ethernet. A relay base station relays data between remote base stations, wireless clients or other relay stations to either a main or another relay base station. A remote base station accepts connections from wireless clients and passes them to relay or main stations.
Connections between clients are made using MAC addresses rather than by specifying IP assignments.All base stations in a WDS must be configured to use the same radio channel, and share WEP keys or WPA keys if they are used. They can be configured to different service set identifiers. WDS also requires that every base station be configured to forward to others in the system as mentioned above.WDS capability may also be referred to as repeater mode because it appears to bridge and accept wireless clients at the same time (unlike traditional bridging).
Throughput in this method is halved for all clients connected wirelessly.When it is difficult to connect all of the access points in a network by wires, it is also possible to put up access points as repeaters.Roaming. Roaming among Wireless Local Area NetworksThere are two definitions for wireless LAN roaming:. Internal roaming: The Mobile Station (MS) moves from one access point (AP) to another AP within a home network if the signal strength is too weak.
An authentication server (RADIUS) performs the re-authentication of MS via 802.1x (e.g. The billing of QoS is in the home network. A Mobile Station roaming from one access point to another often interrupts the flow of data among the Mobile Station and an application connected to the network. The Mobile Station, for instance, periodically monitors the presence of alternative access points (ones that will provide a better connection). At some point, based on proprietary mechanisms, the Mobile Station decides to re-associate with an access point having a stronger wireless signal. The Mobile Station, however, may lose a connection with an access point before associating with another access point.
In order to provide reliable connections with applications, the Mobile Station must generally include software that provides session persistence. External roaming: The MS (client) moves into a WLAN of another Wireless Internet Service Provider (WISP) and takes their services (Hotspot). The user can use a foreign network independently from their home network, provided that the foreign network allows visiting users on their network. There must be special authentication and billing systems for mobile services in a foreign network. Applications Wireless LANs have a great deal of applications. Modern implementations of WLANs range from small in-home networks to large, campus-sized ones to completely mobile networks on airplanes and trains.Users can access the Internet from WLAN hotspots in restaurants, hotels, and now with portable devices that connect to 3G or 4G networks.
Oftentimes these types of public access points require no registration or password to join the network. Others can be accessed once registration has occurred and/or a fee is paid.Existing Wireless LAN infrastructures can also be used to work as with no modification to the existing hardware.See also.References.