[tiptap]

Hi Everyone,

This is my first post, so be gentle with me

I need some networking help please.

We have;

* 2wire 4 port ADSL router
* Server - Running SBS with 2 NICs
* 48 port switch
* A load of computers running a mix of XP and vista


One of the server NICs plugs into the router, the other into the switch. The router doesnt plug into the switch.

The server gets and internet from the switch with no problem.

I've plugged all the client computers into the switch - so in theory they would connect to the server > get their ips (dhcp) > then gain access to the net via the server.

However this is not the case. no client computer can ping or rdp into the server, altough when doing IPCONFIG it seems to have got an ip from the server.

If i plug a computer directly into the servers NIC (not the internet one) I can RDP into it, and get an internet connection.

Why is does it stop working once i plug them both into the switch?

any help is greatly appreciated as this one has been racking my brain for some time now

Thanks

Joe

[JohnWill]

What's the exact make/model of the router and the switch?

Do the computer have access to the server without issue?

Let's see this for the server and one of the non-working computers in the failing configuration.

Try these simple tests.

Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

In the command prompt window that opens, type type the following commands one at a time, followed by the Enter key:

NOTE: For the items below in red surrounded with < >, see comments below for the actual information content, they are value substitutions from the previous IPCONFIG command output! Do NOT type <computer_IP_address> into the command, that won't work.

nbtstat -n

IPCONFIG /ALL

PING <computer_IP_address>

PING <default_gateway_address>

PING <dns_servers>

PING 206.190.60.37

PING yahoo.com

Right click in the command window and choose Select All, then hit Enter to copy the contents to the clipboard.
Paste the results in a message here.

<computer_IP_address> - The IP Address of your computer, obtained from the IPCONFIG command above.

<default_gateway_address> - The IP address of the Default Gateway, obtained from the IPCONFIG command above.

<dns_servers> - The IP address of the first (or only) address for DNS Servers, obtained from the IPCONFIG command above.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[tiptap]

Thanks John

Originally Posted by JohnWill

What's the exact make/model of the router and the switch?

Router = 2Wire 2700 HFV (Provided by BT)
Switch = Linksys SRW 248G4
Server = HP DL120s

Originally Posted by JohnWill

Do the computer have access to the server without issue?

No. The only way a computer can see the server is to be plugged direct into the servers LAN NIC.

PINGS FROM THE CLIENT COMPUTER CMD PROMPT

nbtstat -n

Local Area Connection:
Node IpAddress: [10.10.10.32] Scope Id: []

NetBIOS Local Name Table
Name Type Status
---------------------------------------------
JOE-DESKTOP <00> UNIQUE Registered
JOE-DESKTOP <20> UNIQUE Registered
FSE <00> GROUP Registered

ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : joe-desktop
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : fse.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : fse.local
Description . . . . . . . . . . . : Intel(R) 82562V-2 10/100 Network Connection
Physical Address. . . . . . . . . : 00-21-70-30-ED-94
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.10.10.32
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 10.10.10.2
DHCP Server . . . . . . . . . . . : 10.10.10.2
DNS Servers . . . . . . . . . . . : 10.10.10.2
Primary WINS Server . . . . . . . : 10.10.10.2
Lease Obtained. . . . . . . . . . : 29 May 2009 10:16:46
Lease Expires . . . . . . . . . . : 06 June 2009 10:16:46

PING IP 10.10.10.32 = 4 Replies, 0 Packets lost
PING Gateway 10.10.10.2 = 0 Replies, 4 Packets lost
PING DNS 10.10.10.2 = 0 Replies, 4 Packets lost
PING 206.190.60.37 = 0 Replies, 4 Packets lost
PING yahoo.com = Ping could not find host

[JohnWill]

If that was plugged into the switch, show me one plugged directly into the server.

[tiptap]

Sorry for the delay. We had a few problems preventing me from posting anything.

I'll plug into the server directly now and report the returned info in the next post

thanks