DOCUMENT:Q169416 09-AUG-2001 [winnt] TITLE :RIP Routes May Have a Different Metric Than Expected PRODUCT :Microsoft Windows NT PROD/VER:4.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 - Microsoft Routing and Remote Access Service Update for Windows NT Server version 4.0 ------------------------------------------------------------------------------- SUMMARY ======= Routes learned from the Routing Information Protocol (RIP) may not have the metrics that you would expect. When a Windows NT Router is advertising a non-RIP route over RIP, it will always be advertised with a metric of 2. MORE INFORMATION ================ A metric is a value that shows how desirable a particular route is. Other routing protocols give different meanings to the metric. Because the meanings for the metric are different, the metrics cannot be directly converted. When RIP advertises a non-RIP route, RIP will advertise the route with a metric of 2. A simple example is a Windows NT router advertising its local subnet routes. Routes for the locally attached LANs will show in the route table with a metric of 1 and the Protocol is Local. This local route will be advertised to a neighbor RIP router with the metric of 2. This neighbor router will then increase the metric for all routes by one to reflect its own hop count to the destination. In this neighbor's route table, you will see the metric of 3 when you would expect to see the metric of 2. Additional query words: RRAS ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbAudDeveloper kbRRASNTSearch kbRRASNT400 Version : 4.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.