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Network Location Awareness Vision And Scenarios

Network Location Awareness Vision And Scenarios. Tracey Yao Program Manager Windows Wireless Networking traceyy @ microsoft.com Microsoft Corporation. Session Outline. Introduction Scenarios Features Architecture Demo Resources Q&A. Introduction.

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Network Location Awareness Vision And Scenarios

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  1. Network Location Awareness Vision And Scenarios Tracey Yao Program ManagerWindows Wireless Networkingtraceyy @ microsoft.com Microsoft Corporation

  2. Session Outline • Introduction • Scenarios • Features • Architecture • Demo • Resources • Q&A

  3. Introduction • Windows users are becoming more mobile; Applications must adapt to changing network environments • The “Windows Longhorn” Network Location Awareness (NLA) service provides the latest network information • Applications can query or register with NLA for network change indications

  4. Scenarios – Longhorn • User Friendly Connections UX:The updated connections User Interface (UI) shows a user that they are connected to ABC Corpnet whenever any of the PC’s interfaces are connected to ABC’s corporate network • Switch Default Printer:As a user travels between home and office, their default printer is automatically switched • Opportunistic Certificate Update:The digital identity management service opportunistically connects to the domain controller to refresh certificates that are about to expire • Switch Firewall Profile:The user’s firewall automatically applies the corporate profile when it is connected to a corporate network • Reduced Boot Time:At boot time, Group Policy attempts to connect to the domain controller to apply policy only when there is corporate network connectivity

  5. Scenarios – Opportunities • Network Specific Settings:Applications can associate settings with a specific network • Adapt to Bandwidth Changes:Applications can adjust their network usage based on available bandwidth and network latency • Opportunistic Use of Internet:Applications can check for internet capability before attempting to use resources on the internet • Restrict Use of Corporate Applications:Line of business applications can restrict access or reduce functionality in the absence of corporate network connectivity

  6. Planned Longhorn Features

  7. Network Signature 48 bytes Network ID Link ID Hop ID

  8. Architecture Firewall RAS ConnectionUX App App App Provided by: API Client MS Core Indicate network characteristics of choice MS NLA Clients NLA Service ISV NLA Clients React to network changes and collect network data DNS Directory Services WirelessService IPHelper

  9. Simple Internet Aware App demo Tracey Yao Windows

  10. Demo • This demonstration illustrates how network location awareness (NLA) detects changes in network connectivity • We implement a simple internet aware application that uses NLA to display the network connectivity state • We launch the application to show changes in network connectivity

  11. Demo • NLA Data: • NLA_TRI_STATE • A NLA_TRI_STATE object can have a value of TRUE, FALSE, or UNKNOWN. • NLA data with the NLA data type NLA_DATA_TYPE_INTERNET_CAPABILITY are NLA_TRI_STATE objects. • NLA_QUERY_FILTER • This is used to construct a NLA filter. Filters are used to specify the conditions that the NLA data must satisfy before an application is to be notified.

  12. Demo • NLA Data: • NLA_COMPLETION • This represents the mechanism in which an application wants to be notified. NLA supports notification through: • Eventing • Completion calls • Overlapped structure • Windows messages

  13. Demo • NLA Application Programming Interface (API) Functions • NlaRegisterQueryThis function allows an application to register for notification with NLA • NlaGetInternetCapabilityThis function allows an application to query for the internet capability of a given network • NlaCloseQueryThis function closes the application session with NLA

  14. Demo • NLA API Supporting Functions • NlaCreateTypeSetThis function creates a new type set to be used in constructing the set and filter for an NLA query • NlaCreateFilterThis function creates a filter to be used in an NLA query • NlaAddToTypeSetThis function adds an NLA data type to an existing type set • NlaNotEqualThis function creates an “NOT EQUALS” expression to be used in an NLA filter • NlaDeleteFilterThis function deletes an existing filter • NlaDeleteTypeSetThis function deletes an existing type set

  15. Demo NLA Service Application Process Construct NLA Filter (hFilter) Construct NLA type set (hTypeSet) hQ ← NlaRegisterQuery(hFilter, hTypeSet) Build application context Receive WM_NLA notification bInternet← NlaGetInternetCapability(hQ) Sense network events (cable connected) Local RPC channel Update network state Send network change notifications to applications Receive WM_NLA notification bInternet← NlaGetInternetCapability(hQ) Network state is monitored continuously Notifications are delivered to each existent application session Application is continuously updated on the network state, based on its needs Cleanup context and terminate application session NlaCloseQuery(hQ) t t NLA data acquisition process NLA ↔ Application interaction

  16. Simple Internet Aware App demo Tracey Yao Windows

  17. Call To Action • Determine how NLA can improve your application experience • Read the NLA whitepapers • Familiarize yourself with the network data types and APIs your application needs • Post comments and questions on our blog

  18. NLA Specific Resources • E-Mail: nlafdbck @ microsoft.com • Web Resources • Whitepapers: • http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnlong/html/lhnla.asp • http://www.microsoft.com/whdc/system/platform/mobilepc/NLA.mspx • Blog: http://blogs.msdn.com/nla/ • Related Sessions • Track: Networking • Wireless Vision: Windows Longhorn and Beyond

  19. Community Resources • Community Sites • http://www.microsoft.com/communities/default.mspx • List of Newsgroups • http://communities2.microsoft.com/communities/newsgroups/en-us/default.aspx • Attend a free chat or Webcast • http://www.microsoft.com/communities/chats/default.mspx • http://www.microsoft.com/seminar/events/webcasts/default.mspx • Locate a local user group(s) • http://www.microsoft.com/communities/usergroups/default.mspx • Non-Microsoft Community Sites • http://www.microsoft.com/communities/related/default.mspx

  20. Community Resources • Windows Hardware and Driver Central (WHDC) • www.microsoft.com/whdc/default.mspx • Technical Communities • www.microsoft.com/communities/products/default.mspx • Non-Microsoft Community Sites • www.microsoft.com/communities/related/default.mspx • Microsoft Public Newsgroups • www.microsoft.com/communities/newsgroups • Technical Chats and Webcasts • www.microsoft.com/communities/chats/default.mspx • www.microsoft.com/webcasts • Microsoft Blogs • www.microsoft.com/communities/blogs

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