Solved

Routing problem on Server

Posted on 2004-08-06
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Last Modified: 2010-04-11
2 servers with same config on same subnet. One can get to LAN and Internet. Other can only get to LAN... No Internet.

I noticed that on the routing tables for the problematic server, a bunch of the metrics are 20... that doesn't seem right. Isn't that the expected amount of hops?

Here are the outputs of a ROUTE PRINT command on the servers.  The problematic server is the first one.

How can I fix it?


---------------------------------------------------

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\Administrator.STISD>route print

IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x30004 ...00 0f 1f 67 8e 9f ...... Intel(R) PRO/1000 XT Network Connection
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0         10.5.0.1         10.5.2.4     20
         10.5.0.0      255.255.0.0         10.5.2.4         10.5.2.4     20
         10.5.2.4  255.255.255.255        127.0.0.1        127.0.0.1     20
   10.255.255.255  255.255.255.255         10.5.2.4         10.5.2.4     20
        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         10.5.2.4         10.5.2.4     20
  255.255.255.255  255.255.255.255         10.5.2.4         10.5.2.4      1
Default Gateway:          10.5.0.1
===========================================================================
Persistent Routes:
  None

C:\Documents and Settings\Administrator.STISD>













Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

C:\Documents and Settings\Administrator.STISD>route print
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x1000003 ...00 06 5b 38 e2 70 ...... Intel 8255x-based Integrated Fast Ethernet

===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0         10.5.0.1        10.5.2.2       1
         10.5.0.0      255.255.0.0         10.5.2.2        10.5.2.2       1
         10.5.2.2  255.255.255.255        127.0.0.1       127.0.0.1       1
   10.255.255.255  255.255.255.255         10.5.2.2        10.5.2.2       1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
        224.0.0.0        224.0.0.0         10.5.2.2        10.5.2.2       1
  255.255.255.255  255.255.255.255         10.5.2.2        10.5.2.2       1
Default Gateway:          10.5.0.1
===========================================================================
Persistent Routes:
  None

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Comment
Question by:smetterd
14 Comments
 
LVL 57

Expert Comment

by:Pete Long
ID: 11739548
the metric is the administrative cost - the lower the metric the higher up the packing order the route is chosen
0
 
LVL 2

Author Comment

by:smetterd
ID: 11739573
So then why would these two servers show the different metrics? Are you saying that this is not my Internet access problem?
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 11739626
no its not the problem - metrics come in to play when multiple routes to the same network are available - the server chooses the one with the lowest metric first
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
LVL 2

Author Comment

by:smetterd
ID: 11739683
Crud, so do you have any suggestions on my problem?

2 servers with same config on same subnet. One can get to LAN & Internet. Other can only get to LAN... No Internet.
0
 
LVL 2

Author Comment

by:smetterd
ID: 11739688
I have ruled out bad NIC hardware.
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 11739699
what does tracert and nslookup tell you?
0
 
LVL 4

Expert Comment

by:ErikPhilips
ID: 11739940
In the Advanced TCP/IP Settings is the Automatic metric enabled on the Server/Nic with the 20 metric?
0
 
LVL 4

Expert Comment

by:shad0_cheng
ID: 11740741
Things to check on the machine that has problem to the net:
1. Ping www.yahoo.com (see if DNS works or not)
2. Check you IE connection settings, make sure you are not running through a proxy
3. Make sure your router allows this IP address to access the internet (might be blocked)

let us know the error to #1 and also the error when you try to access www.yahoo.com from IE.

0
 
LVL 1

Expert Comment

by:tropsmr2
ID: 11741214
I like shad0's general direction.  To that, I think it might be helpful to post the ipconfig/all from both machines. Helps fill in the overall picture....
In addition, would like to see the ARP table of the router, if possible  
0
 
LVL 11

Expert Comment

by:PennGwyn
ID: 11754606
What are the MTU settings of the two machines? Is there any router config specific to handling of either address?
0
 
LVL 2

Author Comment

by:smetterd
ID: 11758331
Manana...
0
 
LVL 2

Author Comment

by:smetterd
ID: 11844628
Solved ourselves with Firewall chaining. Apparently an issue with muliple standalone ISA's
0
 
LVL 5

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