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Network problem.

By joelopez213 ·
Ok guys, I was hired with this company 2 months ago. I am handling their Net Administrative duties. I have a degree in this, but specialize mostly in programming. I know my stuff, just dont have sufficient experience to fiddle with their network yet, I am barely getting use to their overall setup and function.

For one, they are running a crappy Network setup. That I know for sure. They currently have a T1 and a local LAN setup. Everything is working fine, but everything else is out of wack, unorganized and messy.

This is the issue:

They are dropping the T1 line to a HUB (ack, which also happens to be an old model NetGear - do they even make HUBs anymore?) and then daisy chaining it or "bridging it" to the wireless router (D-LINK DI-624) which makes up our LAN alongside a 24 port Linksys switch. The D-Link router has 4 switch ports, which they bridged the main LAN switch (24-port Linksys) which ultimately serves our 10 user nodes. We need the available extra ports in case clients come in and they have to use the net with their machines.

Anyway, we have a main server running Windows 2003 Server; its a PowerEdge 6500 DELL rack server. The server is hooked up to the NetGear HUB alongside the Wi-Fi router and a LaserJet for the office. Now here's the issue, HUBs slow your connection because of the crappy collisions and loss packets that this stupid device stumbles on, so I want to remove this thing completely. The issue here is, the server is serving our web site, so it needs a static ip (public) to be able to serve the site and so does the LaserJet (for some reason). How can I eliminate the HUB and keep my WLAN/LAN in check with the D-LINK router and keep my server static as well as the LaserJet printer??

I know that our DELL server has two network cards, one is for incoming net and other is out, right? I bring in the T1 to adapter 1, then uplink adapter 2 to the D-LINK DI-624, right? Now, our server would serve the internet to the LAN, correct? But, how do I keep the LaserJet static?

Thanks in advance for the replies!

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All Answers

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Network problem

by jordanspcrepair In reply to Network problem.

well, your plan is going great. just connect the printer to the router or switch, and add a tcp/ip printer port with a static ip address for your printer, you may have to connect to the printers software through the internet and configure the printer. then configure your server with dhcp so that all the other computers on network will automatically get an ip address, which you probably already did this. but now, configure your server with an static ip address in case you haven't, and then run the dhcp wizard built-into windows, and exlude both the server and printer ip addresses.

i hope this works for you.

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by joelopez213 In reply to Network problem

I will give it a shot.

The LaserJet and server are both configured for static. They are simply bypassing the router to prevent it from assigning them DHCP private addresses.

So let me get this straight...

My incoming line connects to adapter 1 from my Server, then from adapter 2 connect the DI-624 router, then from port 1 from the router, connect the 24 port switch, right? Then configure the server for DHCP and exclude both statics...correct?

Then connect the LaserJet to I dunno, port 2 on the router switch port, then configure it for the static settings? Where do I add the TCP/IP settings for the printer, on the server? Wont it already become the printer server??

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resolution to resolution

by jordanspcrepair In reply to resolution.

ok. let me revise this. turn off the dhcp private addressing on the router. connect your T1 line to your routers WAN/Internet port. ok. now then forget that you have 2 ethernet adapters on your server, and just imagine you have one. now connect your server to the router. connect your printer to the router. connect your 24 port switch to your router. make sure you keep your static ip addresses for your server and printer. and make sure you run the dhcp wizard on the server and exlude the server and printer ip addresses. now then, on your server, open up the printer properties of the laserjet printer, and go to the ports tab. select add new port and click on standard tcp/ip port. enter in any info it asks for.

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by joelopez213 In reply to resolution to resolution

I will try this as soon as I can get some downtime to do all of this, possibly over the weekend if need be.

So excluding the server and printer will give me the flexibility to config the statics? How will these nodes run through a router config'd to DHCP for my LAN?

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resolution #3

by jordanspcrepair In reply to thanks!

i agree about the fact that the ip for your printer shouldn't cost you a cent. get rid of that ip, and configure a static ip like and exclude this address in the dhcp address pool. and if you are paying for your servers ip too, then do the same. ok, now for the router dhcp lan part. just connect the router to one of your computers, and go to the configuration setup page. disable the routers ability to assign ip addresses, and enable the router to use a server to distribute ip addresses and enter in the servers ip address and so forth. make sure you plug your T1 line into the WAN/Internet port of the router, and setup your internet connection on it.

now for your server and printer ip addresses, just assign them a static ip address, and exclude their ip addresses from the dhcp address pool. now then, you can connect your server, printer, and a cable from your switch to your router, and then connect all the other machines that need connected to your switch.

hope this helps.

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sorta a simple solution

by CG IT In reply to Network problem.

whatever router that has the WAN port obtaining the IP address, that needs to be kept in place. Whatever is behind the router you can mess with.

servers and network printers should have static addressing. Everyone else can get their address from DHCP either from the server or from the perimeter router.

I would look at the server addressing with 2 network cards and trace the connections. typically the server should only have 1 ethernet card. The printer NIC would have the IP address already configured so I don't think it has a public address [be awfull expensive to have 2 public address 1 strickly for a printer

Simply put, all hosts on the LAN should connect to the 24 port switch as each switch port is it's own collision domain.

you can uplink if the switch has an uplink port or just connect one of the switch ports on the linksys to the switch port on the router.

You shouln't have to change any addressing or any configuration on the router [provided you figure out why the server has 2 NICs.

If the server has Windows Small Business Server software, that would account for the 2 NICs and make what you do more complicated.

btw if you want to do this right, put in a patch panel. all hosts connect directly into the patch panel punch down blocks [568B] then patch to the switch.

If this is for a company called C.A.R.S tell Chuck good luck.

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RE: sorta a simple solution

by joelopez213 In reply to sorta a simple solution

This is not for the company you referred to.

But in response to your reply, the building does have a patch panel setup, which joins all the wall jacks in every room. the patch panel cables are hooked up directly to the linksys switch. The DI-624 uplink is connected on the furthest port (P24) on the linksys switch. Then it daisy chains to the NetGear crapp-O hub. I am only using one NIC on the server and the server is running Windows 2003 professional Server. The LaserJet was configured for static settings. I have available static ip's from my ISP.

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Miller Time or rather Hamms!

by CG IT In reply to RE: sorta a simple soluti ...

remove the crapola hub. Volia!

There's no reason to have that hub between a router and your ISP modem.

I have no idea why a network printer would have a public address. It's a waste of $$ in my opinion. Besides I don't think your perimeter router that gets your public addresses [the D-Link] can handle multiple global addresses. If it was a Sonicwall TZ 170 then I could see it.

So, your server gets a static LAN address, the network printer gets a static LAN address [published in Active Directory], you reserve them in DHCP, everybody else gets theirs from DHCP.

It's Miller Time.

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by joelopez213 In reply to Miller Time or rather Ha ...

I'm hosting webservices on the server so it needs a static public ip, not a private local ip?

You guys are suggesting I assign a static DHCP address? It has to be public static or I wont be able to host through IIS.

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global local public addresses

by CG IT In reply to Humm

you "reserve" any static assigned addresses in DHCP so that the DHCP server doesn't assign them.

Your ISP assigns you global local public addresses [routable on the internet]. the type depends on what you need and what your budget is. Static global local addresses assigned to you are configured on the WAN port of your perimeter firewall router [or you get it dynamically and then use a 3rd party DNS service]. you also need DNS running to perform whois name lookup resolution. [Hope you have DNS running on your network ]

Now most perimeter routers and firewalls [both consumer level and business class ]that perform many to one NAT for internet connection sharing need to be configured to forward port 80 traffic [http] and port 443 [https]to the web server for web hosting. This is where the static non public address for the web server comes in. you create the route [map] for http and https traffic to the servers address. The perimeter router will then forward inbound http and https requests to the web server.

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