Ipconfig and Winipcfg Display Only One Default Gateway Address (162055)

MORE INFORMATION

The following information is a sample of the output from the Ipconfig tool:

   Windows NT IP Configuration

      Host Name . . . . . . . . . : MYPC
      DNS Servers . . . . . . . . :
      Node Type . . . . . . . . . : Mixed
      NetBIOS Scope ID. . . . . . :
      IP Routing Enabled. . . . . : No
      WINS Proxy Enabled. . . . . : No
      NetBIOS Resolution Uses DNS : No

   Ethernet adapter Elnk31:

      Description . . . . . . . . : ELNK3 Ethernet Adapter.
      Physical Address. . . . . . : 00-C0-4F-D7-DB-91
      DHCP Enabled. . . . . . . . : Yes
      IP Address. . . . . . . . . : 100.50.84.54
      Subnet Mask . . . . . . . . : 255.255.248.0
      Default Gateway . . . . . . : 100.50.80.1
      DHCP Server . . . . . . . . : 100.50.40.9
      Primary WINS Server . . . . : 100.50.16.153
      Secondary WINS Server . . . : 100.50.16.155
      Lease Obtained. . . . . . . : Friday, January 10, 1997 7:29:32 AM
      Lease Expires . . . . . . . : Wednesday, January 29, 1997 7:29:32 AM
				

To determine which default gateways have been assigned, you can use the ROUTE command by typing the following line at a command prompt: The following table is a sample of the output from the ROUTE PRINT command:

   Active Routes:

   Network Address          Netmask  Gateway Address     Interface  Metric
           0.0.0.0          0.0.0.0      100.50.80.2     100.50.84.54    1
           0.0.0.0          0.0.0.0      100.50.80.1     100.50.84.54    1
         127.0.0.0        255.0.0.0        127.0.0.1        127.0.0.1    1
      100.50.41.50  255.255.255.255      100.50.80.2     100.50.84.54    1
       100.50.80.0    255.255.248.0     100.50.84.54     100.50.84.54    1
      100.50.84.54  255.255.255.255        127.0.0.1        127.0.0.1    1
    100.50.255.255  255.255.255.255     100.50.84.54     100.50.84.54    1
         224.0.0.0        224.0.0.0     100.50.84.54     100.50.84.54    1
   255.255.255.255  255.255.255.255     100.50.84.54     100.50.84.54    1
				

The lines that have a 0.0.0.0 network address indicate that there are two assigned default gateways. The Tracert utility can be used to find out which default gateway is active.

NOTE: Only one of the default gateways is used for each network adapter. If you assign more than one default gateway address, the second address is used only if the Dead Gateway Detection feature determines that the first gateway is not operational.

For more information about dead gateway detection, see the following articles in the Microsoft Knowledge Base: