With both wireless & ethernet connected, which connection does Windows use?
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From: Judy Zappacosta on 21 Apr 2010 07:24 When a WinXP computer has both a wireless connection (54 Mbps) and an ethernet connection (100 Mbps), how does Windows choose which connection to actually use? Does it pick the fastest? The first to boot up? Does it use both? How can we tell WHICH connection it's using?
From: AnthonyL on 21 Apr 2010 08:52 On Wed, 21 Apr 2010 11:24:55 +0000 (UTC), Judy Zappacosta <zappajNOSPAM(a)Use-Author-Supplied-Address.invalid> wrote: >When a WinXP computer has both a wireless connection (54 Mbps) and an >ethernet connection (100 Mbps), how does Windows choose which connection to >actually use? > >Does it pick the fastest? The first to boot up? Does it use both? > >How can we tell WHICH connection it's using? They are giving a routing metric. The one with the lowest metric is used. Go to the command prompt and type Route Print -- AnthonyL
From: Aaron Leonard on 23 Apr 2010 18:35 ~ When a WinXP computer has both a wireless connection (54 Mbps) and an ~ ethernet connection (100 Mbps), how does Windows choose which connection to ~ actually use? ~ ~ Does it pick the fastest? The first to boot up? Does it use both? ~ ~ How can we tell WHICH connection it's using? Just to add a couple of tips to what's been said: * you can control what per-connection route metric is used in the adapter's Properties panel (TCP/IP properties -> Advanced -> IP Settings -> Uncheck Automatic metric) * you can also control this in the DHCP server for the clients, using option 43 ... the option is specified thus: 0x2b option 43 <len> length of the remaining of the option 0x03 "MS default router metric base option subcode" 0x04 suboption length <value> metric value as a series of 4 bytes So to set the default router metric to 3, then set option 43 to 0304.0000.0003 (http://technet.microsoft.com/en-us/library/cc977349.aspx) Cheers, Aaron
From: Judy Zappacosta on 21 Apr 2010 18:15 On Wed, 21 Apr 2010 12:52:20 GMT, AnthonyL wrote: >>When a WinXP computer has both a wireless connection (54 Mbps) and an >>ethernet connection (100 Mbps), how does Windows choose which connection to >>actually use? > Go to the command prompt and type Route Print See the "route print" below. It's kind of hard to understand. There are multiple "25" metrics. Which one does it use? Lan or Wan? Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\>route print =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x2 ...00 22 14 ac 03 28 ...... Broadcom 440x 10/100 Integrated Controller - Pac ket Scheduler Miniport 0x3 ...00 6f 16 95 bc 9e ...... Intel(R) PRO/Wireless 2200BG Network Connection - Packet Scheduler Miniport =========================================================================== =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.40 192.168.1.102 25 0.0.0.0 0.0.0.0 192.168.1.40 192.168.1.101 20 192.168.1.0 255.255.255.0 192.168.1.101 192.168.1.101 20 192.168.1.0 255.255.255.0 192.168.1.102 192.168.1.102 25 192.168.1.101 255.255.255.255 127.0.0.1 127.0.0.1 20 192.168.1.102 255.255.255.255 127.0.0.1 127.0.0.1 25 192.255.255.255 255.255.255.255 192.168.1.101 192.168.1.101 20 192.255.255.255 255.255.255.255 192.168.1.102 192.168.1.102 25 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 224.0.0.0 240.0.0.0 192.168.1.101 192.168.1.101 20 224.0.0.0 240.0.0.0 192.168.1.102 192.168.1.102 25 255.255.255.255 255.255.255.255 192.168.1.101 192.168.1.101 1 255.255.255.255 255.255.255.255 192.168.1.102 192.168.1.102 1 Default Gateway: 192.168.1.40 =========================================================================== Persistent Routes: None
From: DevilsPGD on 21 Apr 2010 21:52
In message <1pglqhjngq1wo.dlg(a)sbcglobal.net> Judy Zappacosta <zappajNOSPAM(a)sbcglobal.net> was claimed to have wrote: > >On Wed, 21 Apr 2010 12:52:20 GMT, AnthonyL wrote: > >>>When a WinXP computer has both a wireless connection (54 Mbps) and an >>>ethernet connection (100 Mbps), how does Windows choose which connection to >>>actually use? > >> Go to the command prompt and type Route Print >See the "route print" below. >It's kind of hard to understand. >There are multiple "25" metrics. >Which one does it use? >Lan or Wan? > >=========================================================================== >Active Routes: >Network Destination Netmask Gateway Interface >Metric > 0.0.0.0 0.0.0.0 192.168.1.40 192.168.1.102 25 > 0.0.0.0 0.0.0.0 192.168.1.40 192.168.1.101 20 > 192.168.1.0 255.255.255.0 192.168.1.101 192.168.1.101 20 > 192.168.1.0 255.255.255.0 192.168.1.102 192.168.1.102 25 > 192.168.1.101 255.255.255.255 127.0.0.1 127.0.0.1 20 > 192.168.1.102 255.255.255.255 127.0.0.1 127.0.0.1 25 > 192.255.255.255 255.255.255.255 192.168.1.101 192.168.1.101 20 > 192.255.255.255 255.255.255.255 192.168.1.102 192.168.1.102 25 > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 > 224.0.0.0 240.0.0.0 192.168.1.101 192.168.1.101 20 > 224.0.0.0 240.0.0.0 192.168.1.102 192.168.1.102 25 > 255.255.255.255 255.255.255.255 192.168.1.101 192.168.1.101 1 > 255.255.255.255 255.255.255.255 192.168.1.102 192.168.1.102 1 >Default Gateway: 192.168.1.40 >=========================================================================== There aren't any duplicated routes with the same metric here, but rather, you have two almost identical routing options for any particular destination, one with a metric of 20 and the other with a metric of 25. The only routes that aren't exactly duplicated are the 192.168.1.101 and 192.168.1.102 routes which are routed as loopback addresses. Since 20 wins over 25, 192.168.1.101 will be the default interface. |