Networking a Laserjet 5si through two routers.

We have on our home network an HP Laserjet 5si (with the network adaptor) which we use as our primary printer. Lately, the main router (a D-Link Di604 out of which all 3 computers on our network leave) has broken, we have another router to replace it, but whilst the internet and networking works fine through this new router, the printer does not. The printer is in a second D-Link router (a wireless one, unsure of model) which comes out the 4th spare port on the first router. The PS3 also on this router works fine with the new setup. I seem to recall that setting up the printer in the first place was quite a difficult task as we had no instructions and just worked it out as we went along. With the new router, the printer cannot be found by any of our computers, even if I tell it the printers local IP address. How can we set the router up to work through this router configuration?
Thanks,
Pablo.

Helpful forum, this.

Similar Messages

Using two routers for the same SSID

So here's my story. I have a standard Actiontec router in my basment, connected straight to the coax outlet, and connected by LAN Ethernet to a crappy computer nobody uses. It gives off a WPA2 wifi network, let's call it MyNetwork. For the longest time it's been the only router in the house. The coax outlet is on a splitter, splitting the coax outlet into one wire that goes to the Actiontec modem/router and the other to my TV STB. Recently we installed a new coax outlet on the other side of my house and next to it we have a brand new desktop computer that we use often. It has no wifi so and we can't run an ethernet cable throughout the entire house so we got a new Actiontec modem/router from our neighbor who just moved out. It's the exact same Actiontec device.
What we want to do is make it so that both routers give off signal on the same MyNetwork we have to make it a wider reaching signal, and so that I can connect the new desktop computer to the new router with an ethernet cable. I've read so many guides and they're all so confusing and it's such a mess that I almost completely screwed over my network. it seems like the two routers are completely independent of one another, not even aware of the others' existence. The new router is definitely in range of the old one. I've logged into 192.168.1.1 on the new computer and the new router seems to think it IS the old router (or so I think). It showed me all the same devices that have connected to MyNetwork and such, but then again it's always hard to be certain exactly which device is which. After messing around I must have changed some IP address or something, but it seems that 192.168.1.1 doesn't take me to the Verizon login screen, but 192.168.2.1 does. Can I reset those IP addresses?
And of course, can somone please provide a clean, easy to follow course of action as to how to set up two routers on one network?

maxbirch wrote:
... I have a standard Actiontec router in my basement ... connected by LAN Ethernet to a computer ... It gives off a WPA2 wifi network, let's call it MyNetwork ... The coax outlet is on a splitter ... one wire that goes to the Actiontec ... other to my TV STB ...
... installed a new coax outlet on the other side of my house ...
... What we want to do is make it so that both routers give off signal on the same MyNetwork we have to make it a wider reaching signal, and so that I can connect the new desktop computer to the new router with an ethernet cable ...
... can somone please provide a clean, easy to follow course of action ... ?
I suspect it might be a good idea to step back reconsider your ultimate layout. Essentially you now have two (or if the STB is also included, three) coax drops connected to the ONT. It seems that you desire that one of these service the STB, and the other two each service a desktop and a wireless access point. If this is the case, continue reading.
There is no need to consider the original Actiontec router as the primary router, wireless or otherwise. Use the new coax location to connect to the primary Actiontec router (you can use either router). For starters, reset both routers to their factory defaults using the reset switch on the back of each device (for details, do a search).
Once the primary router has been located (or relocated) to the new coax drop, just connect the new desktop there using an Ethernet cable connected to one of the LAN ports on the back of the router. Then set up your primary wireless network based on this router (once again, do a search on these forums for specifics on setting up a basic wireless home network).
Now use the original coax outlet where the first router was located to set up another access point. This access point will provide Ethernet connections plus an additional wireless network (if it's still needed). However you cannot have two wireless devices on a single home network with the same SSID (i.e., network name). Here are details on some methods to do this:
http://www.dslreports.com/faq/12506
For additional details, here's the complete FAQ:
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&cad=rja&sqi=2&ved=0CCwQFjAA&url...
Take a careful look at these suggestions and references to decide if this is what you want. Then report back if there are remaining questions. Good luck.

How do I extend my network with two routers?

Hey all,
I've been wondering for a while how I could solve the weak signals that I get in the lower level of my house from my standard Verizon FiOs router. I have an Airport Extreme still lying around after it was taken out and replaced by the Verizon guys when they installed FiOs and I thought I might be able to put it to use downstairs. Is there any way I could put my Verizon router (which is directly connected to the fiber optic modem) and my Airport Extreme together to work in an extended network so that I could have strong signals in both levels of my house? Is it even possible? Any helps on this issue would be greatly appreciated.

Dranakin wrote:
I'm a bit confused about the terms 'network throughput'. Is that referring to the speed of the network? Your internet speed is slowed down when connecting to a remote station?
Yes. At least with an 802.11b or g network, the effective network bandwidth is halved with each remote base station in a WDS configuration. In other words, if the maximum theoretical throughput of an 802.11g system is 54 Mbps, adding a remote base station will reduce it to 27 Mbps.
{quote:title=from Wikipedia:}{quote}
Two disadvantages to using WDS are:
• The maximum wireless effective throughput is halved after the first retransmission (hop) that is made. For example, in the case of two routers connected via WDS, and communication is made between a computer that is plugged into router A and a laptop that is connected wirelessly using router B's access point, the throughput is halved, because router B has to retransmit the information during the communication of the two sides. However, in the case of communications between a computer that is plugged into router A and a computer that is plugged into router B, the throughput is not halved since there is no need to retransmit the information.
• Dynamically assigned and rotated encryption keys are usually not supported in a WDS connection. ...
I didn't really believe it until I added a remote base station and checked my network speed with http://www.speakeasy.net/speedtest/, with and without WDS.
As I understand it, 802.11n networks are not be affected in the same manner due to its ability to handle multiple data streams simultaneously.
If you want to extend your network without sacrificing bandwidth, you can certainly connect the base station Ethernet ports. That is not WDS; Apple calls it "extending a network". That's also how they do it in Apple's retail stores (at least when they used b/g AEBSs).
Message was edited by: John Galt

Add time capsule to existing network to make subnetwork (two routers?)

We have a modem/router (motorola) provided by isp to connect to internet. Most devices connect to this wirelessly. We just purchased an Airport + Time Capsule to create a subnetwork (add to existing network via ethernet cable), so that only a few devices can wirelessly connect to Airport + Time capsule to store time machine back up and to wirelessly print to one printer connected by usb to Time Capsule. When I select "I want to add to existing network" the motorola only shows up as a wireless, can't see the wired option. I tested that the ethernet cable works and connected to one port on motorola and WAN on Time Capsule. How do I tell Airport + Time Capsule to connect to motorola modem/router via the ethernet cable? I think I want it to connect via cable because I don't want the Airport to replace the existing router, rather I want to end up with two routers (one for entire network, and second one just for subnetwork).
Thank you.

Ok, your question confused me with the airport and TC as if it is two things not one.
when I connect the ethernet cable to TC, why doesn't modem/router show up in connect to list? Or if wrong list, where should I look, to select, to get it to "see" what it is connected to by ethernet?
Are you using v6 in Lion utility? I am using SL with 5.5 utility. There is no such place that I can find. (You will do better downloading and using v5.6 for Lion anyway).
On the manual setup.. summary page it will show the IP you get on the WAN port. From default settings this will all work properly.. there is nothing you need to do.
Plug ethernet from modem router to TC wan port. When you do the TC will get an IP.
If you open the internet tab, you can see Connect using.. ethernet. Just leave that. and everything else on auto.
For connection sharing, you still need to share a public IP.. although TC will complain you are not using public but private IP.. there is nothing you can do about that. Just set the TC to ignore the error double NAT.
When I began installation, I plugged everything in, then plugged in power. I opened Airport Utility, and followed on-screen instructions, but when selecting "connect to existing network with ethernet cable" my modem/router doesn't appear in the list.
Do not use connect to existing network.. that will bridge the TC which you don't want.
You have to use the existing network as if it is public network. And stuff behind your TC is private.
If I set the TC to bridge mode, won't it "take over" all router activity, and the first group of computers won't be able to connect directly to motorola? (I don't want this first group of computers to be able to connect to the TC).
Also, I don't want the TC to connect to the motorola wirelessly.)
If you set the TC to bridge it will not route at all... it will become a client of the existing network. And all IP addresses will be taken from the Motorola.. you will have one flat network, which is what usually people want.
If you are still struggling.. do this.
1. Tell me the IP address the existing Motorola is passing to the clients. Your one big issues here is making sure they are in fact on two different subnets.
2. As long as condition of 1 is fulfulled this will work at default setting. Reset the TC by holding down the reset for 10sec.
Plug Lan motorola to WAN TC.
Plug a computer into the TC to do setup.
Set up as if you have public IP on wan. Tell TC to ignore double NAT.
Set wireless and TC names as you want.
Now test internet.. on a client computer on the TC. it should work fine. At least for everything that doesn't need interactive connection.
3. You can improve things by using DMZ in the Motorola to the TC. That alleviates at least some of the issues that arise with double NAT.

Connecting two routers wired - the definitive answer

This is a common issue and I answered the question probably more than a hundred times thus I put it into a new thread to which I can simply link from now on... Please do not post a reply in this thread if you have a problem setting it up. Post a NEW thread instead. This thread would explode if everybody would post in here...
You have one router running in your network. This router connects to the internet. Now you want to hook up a second router (e.g. a wireless router to have wireless access) in your network connecting both with an ethernet cable. The following is in most cases the best approach for home networks. You'll find similar answers with some screenshots in the Linksys Easy Answers, e.g. 4579
The setup:
1. Unplug the second router from anything. Connect a single computer to the router. Do not connect the second router to the first at the moment!
2. Configure the router at http://192.168.1.1/
3. Change the LAN IP address of the second router from 192.168.1.1 to a free address in your LAN (e.g. 192.168.1.2 should be O.K. if the first router is also a Linksys router). The address you change to (192.168.1.2) must not be used by any other device with static IP address in your network nor should be assigned by the DHCP server your network. A default Linksys router uses 192.168.1.1 itself and the DHCP server assigns 192.168.1.100-149.
4. Turn off the DHCP server on the second router.
5. Save the setting.
6. Unplug the computer from the second router.
7. Connect an ethernet cable from a numbered LAN port of the first router to a numbered LAN port of the second router. Do not use the Internet/WAN port on the second router!
8. That's it! If you don't know or don't want to know more about networking you don't have to read the rest here.
What do you have now?
The second router is connected through a LAN port to your existing network. This basically means that the router part of the device is actually not used. So you have a router device that you don't operate as router in your network. Whatever you connect to the second router either through one of the remaining LAN ports or through a wireless if it has one, is directly connected to your LAN. Devices connected to the second router use the DHCP server of the first router to get an IP address. They use the first router directly for internet access. Everything is connected to a single larger ethernet network. Everything is in a single "broadcast" domain.
If the second router is not a wireless one, you basically have a few more ports in your network. In that case it might have been cheaper to get a simple switch/hub instead to extend your network.
Please remember: as the second router is not connected through the Internet/WAN port many configurations and functions of the second router won't work simply because they require an internet connection on the router itself. Some examples are: access restrictions, dynamic DNS service, port forwardings, MAC address clone, the firewall... All these things must be configured on the first router and only there.
Why is this better than connecting the second router with the Internet port?
A router is a separating network element. It separates two networks and allows certain traffic to cross. Sometimes this is necessary in a network setup but for most home networks it only creates a lot of obstacles.
1. In default Gateway mode the second router does network address translation (NAT). This means computers connected to the second router can connect to computers connected to the first router but not in the opposite direction.
2. If you use Router mode on the second router: you have to configure "routes" on the first router and possibly your computer connected to the first router so that IP packets find their way into the subnet of the second router.
3. You have two separate ethernet networks and thus two "broadcast" domains. A broadcast in the first router's subnet reaches all computers connected there. The same applies to the second router. A broadcast will never cross the second router, though. This is an obstacle for applications that depend on broadcasting to locate other computers and services. Windows file and printer sharing is one example here. With the second router in between, computers on one side do not know about computers on the other side. You cannot search your workgroup for the computer on the other side even when they use the identical workgroup name. You will be able to access the other computer using the IP address directly (e.g. \\192.168.1.100\share) but that's usually a hassle and the IP address may change if it is assigned by the DHCP server to the computer. There are ways to deal with some of these issues (e.g. save the host names in lmhosts files...) but all this requires more effort and attention to keep everything up-to-date.
4. Port forwardings become more complicated. If you need a port forwarding (i.e. you want a port on a computer in your network to be accessible from the internet) on a computer connected to the second router you have to setup two forwardings: one on the first router to the second router and one on the second router to the computer.
5. If you have two wireless routers: you cannot roam between both routers without loosing the connection. This is simply because if a wireless computers moves from one router to the other it needs a different IP address.
6. The whole configuration becomes more complicated: you always have to think about where to configure what, e.g. dynamic DNS service, access restrictions, ...
Bottom line: unless you have good reasons why you must have some computers separated from the other computers in your network, there is no good reason to in a home network to do so. For normal home networking with simple to use file and printer sharing it is better to connect the second router as suggested in this post...
Message Edited by gv on 08-11-2007 01:45 PM

I have tried all the advice I can find and to no avail. I even got my Network Certified Tech son to advise me.
I have a WRT54GS Wireless router that was my main and only device acting as a gateway hosting my cable modem access to charter.net. It is located on the second floor of my house next to my main hardwired PC and print server attached HP Laserjet printer. I am kicking Charter out and have had Verizon FIOS fiber optic service installed.
Verizon supplies an customized ActionTec wireless gateway/router with the install and it is installed in the basement on the same panel as my big circuit breaker panel. They imply that it must the first router connected to their ONT (Optical Network Terminal)... sort of an optical modem. I want the devices connected to my Linksys router in the 2nd floor bedroom to be on the same network as the wireless router in the basement.
Based on this forum's and son's advice I did the following to my WRT54GS:
1. Changed the its address to 192.168.1.254 subnet 255.255.255.0
2. Turned off the DHCP server function.
3. Set operation from GATEWAY to ROUTER
4. Turn on Dynamic routing for LAN/WIRELESS
5. Plugged a standard cat5e cable from PORT 1 of the Verizon Router to PORT4 of the 2nd floor WRT54GS.
Result: absolutely no connectivity between the Verizon gateway and the 2nd floor and vis-versa. My 2nd floor PC could talk to the printer on the WRT54GS. The Verizon router could connect with a temporally hard cabled laptop and with two wireless laptops. I then tried the other variation of:
1. Changed the Ethernet cable from the Verizon Gateway from PORT 4 to the WAN port of the WRT54GS.
Result: Same.. no connectivity between the Verizon gateway and the WRT54GS.
I was trying to get the WRT54GS to act as a simple hub and a wireless access point on the network. I finally gave up and bought a simple $19 hub and everything worked immediately.
I still want to put the WRT54GS back in service but I can not make it work. Whats going on here??
Brian Sanborn
Groton MA

HP LaserJet 5si won't print -- jobs stopped

Mac G5 OSX 10.4.x
LaserJet 5si with 2552 Jet direct card
Networked via Linksys switch
I lost my internet connection to all computers yesterday and ended up having to reset my Linksys Router. Now everything works except this printer which is connected to the router through a workgroup switch. Printer shows up in Printer list. Jobs get spooled to printer. I get a message that jobs for this printer are stopped. When I click "start" it looks like it is printing, but then shows up as "jobs stopped".
Apple Talk is active. Disk Utility did a repair disk permissions. I have taken the Jet Direct card out and reinstalled it. I have reinstalled the LaserJet drive software.
Can anyone help me???
Marjorie

I am having the same problem with my Espon Stylus CX6600, but only with certain programs. Dialatech told me to go into Page Setup and make sure where my printer was selected under "Format for." Don't know why it wouldn't work when "Any printer" was selected, but it worked great for a couple months. The problem's back now, even though my printer is selected in the "Format for" thing, but maybe this will help for you. Please post if you come up with any other solution!

Configuring AppleTalk for HP LaserJet 5si?

Hi all,
One of our printers was recently "fixed," and in the process the network settings were wiped out. While the printer can be added and printed to simply enough using the add printer utility as an AppleTalk printer, I cannot find a way through the telnet application to configure the AppleTalk name - "LaserJet 5si" just doesn't have a good ring to it. HP's webpage has proven to be useless, as has the manual. Any ideas on how to do this?
Thanks!

The only thing I've found to work is the Classic HP Laserjet Utility, which comes in the OS 8/9 laserjet installer.

How to : connect two routers running under another

So this issue is tricky and i have had no luck in getting this to work. Basically what i need to do, is connect "Network 2" with "Network 1" and both run off of another larger network. The Base Network is out of my control and i cannot set or change any setting within that network's routers or DHCP Servers. Thus i am forced to set routes within my routers to communicate to each other. The need for this communication is software that runs on a server within "Network 1" needs to be available to all client computers running on both "Network 1" and 'Network 2". Obviously the computers running off the same router as the server are fine. Getting the computers running off the router for "Network 2" is the tricky part. Here is a link to a diagram of the setup : http://i64.photobucket.com/albums/h176/m4x70r/networkquery.jpg Some of the things i have tried are setting the DMZ on "Network 1" to point at the server. Setting routes in both to point at the other. Setting the Gateway in "Network 2" router to point at the WAN address of "Network 1" and setting the DNS of "Network 2" to the WAN of "Network 1". No matter what i do, the laptops inside "Network 2" cannot ping the laptops in "Network 1" or even ping the router for "Network 1". However, when pinging the name of the server, it does show the IP addy i gave it, so it sees it in some small fashion but cannot link to it. I'm stumped. Time to get a networking cert i suppose. Any help or suggestions would be much appreciated!

First you have missed to mentioned the most important thing for your setup: are those two routers running in gateway mode or router mode?
It is also quite confusing which routes you tried to set exactly. (in particular why you mentioned the DNS server?). Please simply post the exact settings of the routes you have entered on either routers.
As you have mentioned that you have no control over the main network I guess your routers operate in gateway mode. In that case they do NAT - network address translation. NAT shares a single public IP address with multiple computers with private IP addresses inside the LAN. NAT makes computers in the LAN inaccessible from the outside unless you have configured an explicit port forwarding or DMZ host.
Moreover, with NAT you cannot access the computers inside the LAN on an inside IP address. This is impossible because the private IP addresses inside the LAN are not visible on the outside. You can only access any computer on the WAN IP address of the router. You cannot ping any computer inside the LAN behind the router with NAT. UDP or TCP access is limited to what you forward. The DMZ host is the "default" forward which gets all ports which are not forwarded otherwise.
If both routers are in gateway mode you don't have to define any routes on the routers as the destination subnet is not accessible. To make your server accessible you have to define port forwardings to your server on 192.168.1.2 or put it into the DMZ. You can then access the server the external IP address of the router, i.e. 10.7.2.101. The router forwards incoming traffic on that address to your server at 192.168.1.2.

Cannot print to Brother MFC 9840 CDW or HP LaserJet 5si

I have spent a good deal of time online and the phone with Brother and they consider this an 'apple' problem because it occurred after snow leopard was installed. I have updated everything that I think I could, but when I try to print to my printer from either computer in PDF format it gives trouble. At times it will not print at all, and I get error messages such as the printer is not available. Sometimes it comes through, especially with word docs.
When I use the MacBook Air to try to print to the LaserJet 5si I get the problem where the printer says it is 8% done and then goes to pause. If I resume printing it will pause within a few seconds. I cannot get it to print at all. Oddly, the printer disappeared when I uploaded snow leopard. I used my Mac Pro settings to reinstall it to my printer list but using the exact same settings as the Mac Pro it will not print from Air but will from Pro.
Any suggestions? Or insight?

I got the 9840 working. I installed all the latest drivers (still no joy) but then I went into the Preferences, uninstalled the printer by simply highlighting the printer and selecting . I then closed the prefs, went back in and added it back . **** if it worked in Word immediately.
I agree with most - this has been a very unApple-like experience - hopefully not a harbinger of things to come.

Win 7 x64 printer driver for old HP LaserJet 5si

OK, I know everyone's dealt with one of these along the line, and I thought I had these dang printers figured out completely, but this one is a flat out freak, and anyone who can help, I appreciate it. Working in an environment with several new Dell
Desktops (Precision T3500s) with Win7 x64 installed on them. They have an old HP LaserJet 5si on the network. Several of the Win7 computers on the network are already connected to it by the private IP, and they work. I just installed
a new client, and trying to install to the printer by IP, can't find the driver. Look on HP's site for Win7 x64, and they say "it's already installed on Win7, we're not giving you a driver". Well, it's not installed on Win7 x64, not when I try
to navigate to it when installing the printer, there is no "LaserJet 5si" listed. Weird thing is, when I look at the other computers, and RE-Install that same printer, I CAN find the "LaserJet 5si" printer listed. OK, so I must not have all
the updates on my new computer, right? YES I DO, WINDOWS UPDATE TELLS ME IT'S ALL UP TO DATE. WTF??? Thanks in advance.

OK, I figured it out FINALLY. The problem was with the "Windows Update" feature within the "Install Printer" wizard. A folder called "Software Distribution" on the root of C: was causing the trouble. Found this fix, the Windows Update feature
then worked, then the correct driver installed. Dang there's 6 hours of work...hope this helps someone avoid the trouble.
These steps did resolve the issue:
1. Open Task Manager (Ctrl-Alt-Del)
2. Click Sevices Tab and then Services Button (Bottom Right)
3. Under Name find "Windows Update"
4. Right click "Windows Update" and select Stop. do not close
5. Open Window Exploper and browse to C:\Windows
6. Delete the Folder "SoftwareDistribution"
7. Go back to Servies, Right click "Windows Update" and select Start
After this, do your usual routine to install the printer, and select "Windows Update" to find driver (it shouldn't fail now), and afterwards, you should be able to find the correct (in this case LaserJet 5si) driver. Yay!

Wi-fi bridge between two routers TP-LINK WR841ND (WDS). HP 1536 dnf MFP connect to one of this routers (copper). My Ipad or Iphone can't find HP 1536 dnf MFP (using Eprint). Ipad and iphone connect to router across WiFi.

Hello.
I have wi-fi bridge between two routers TP-LINK WR841ND.
The name of this technology - WDS.
HP Laser JET 1536 dnf MFP connect to one of this routers (copper).
Second device (my NETBOOK) connect to second router (WiFi).
I have good communication between NETBOOK and HP Laser JET 1536 dnf MFP via WiFI-bridge.
In usual case NETBOOK can find (and can Ping) network printer and make a print some files.
But my Ipad or Iphone can't find HP Laser JET 1536 dnf MFP (using Eprint). Ipad and iphone connect
to router across WiFi.
Please, help!

Are you using the ePrint Mobile App, the ePrint Printer Control App, or just trying to send an email to the printer's ePrint email address?
Does AirPrint work?
-------------How do I give Kudos? | How do I mark a post as Solved? --------------------------------------------------------

HP Laserjet 5si is printing postscript, not the print job

What is the adjustment that needs to stop my HP Laserjet 5si from printing page after page of postscript jibberish?
Thanks to everyone that helped me to install this printer in my System Printer cue. After the present problem is solved, all should be well.

I eliminating my router and connecting the 5si directly to the Mac's Ethernet port. Now nothing happens, other than an error message that my network is busy.
You'll likely have to delete the exiting Printer in Printer Setup Utility and redo it after moving it... it may not even work without setting the IP of the hp to the same range as the Mac, without the Router handing out DHCP.
On the Garbage, if the 1st page starts out something like this, then it may think it's a Line Printer instead of a PostScript Printer...
"%!PS-Adobe-3.0
%%Copyright: ....
%%Creator: ... (PostScript 1.0p Beta.1)
%%Title: 6pak Whi JrMac2007.pgs
%%Copyright:
%CreationDate: 2008-4-10 11:35
%%For:
%%BoundingBox:0 0 612 792
%%Pages:
%%DocumentFonts:
%%DocumentNeededFonts:
%%DocumentSuppliedFonts:
%%EndComments
%%BeginProlog
% $VER: PostScript.prolog 1.4 (14.11.97)
%Copyright ...
/AsphaltDict dup 200 dict def load begin
% basic definitions
/dko true def
/cko true def
/bdef {bind def}b"

Suddenly, my MBP Won't get an internet connection through my routers

I've had my MBP 15" 2.4 for about three months now, and I've never had a problem connecting to the internet. This morning I booted it up, but when I went to get on a wireless connection it would connect, but still say I had no internet. I have two routers in my house - the main one on one side, and my old iMac in my room (my room is too far from the main router to get signal), and the MBP won't get internet from either. However, as you can see by me posting this topic, I'm getting clear internet through the ethernet cable. An error message in connecting to the wireless signal has also appeared a few times. Lastly, my MBP is running very slowly this morning, and there's lots of lag for the track pad.
At first, I thought it was the main router's problem. But since the iMac's Airport isn't providing internet connection either, it leads me to believe it's something with the MBP. I'm not sure what to do, and I'd greatly appreciate any help I could get.

Sorry to hear about the signal dropping. I don't have a solution but would like hear if anyone has an idea what's going on.
My situation is similar. I have an Airport Extreme (n) and the MBP would drop its connection to it randomly. I've gone to pains to change my phone from using any close freq to the wireless.

Load balancing between two routers

I have two routers connected through the LAN connection. The first one is using as routing protocol EIGRP, the other one is part of the managed service and I do not have access to it. I would like to make a load balancing between the two of them by redistributing the static routes in EIGRP. When I tried this, I am loosing the EIGRP entry for this route in the routing table. I would like to have both of them , so we could have traffic sharing. I appreciate if you give me any hints.

Raju,
you have two choices as far as I can see. If you want to use static routing over the WAN to your branch, you could duplicate your static routes to the branch and point them to the secondary router. You will have two identical sets of static routes in the primary router, one set pointing to the WAN interface and the other one pointing to the secondary router.
ip route x.x.x.x "WAN-interface"
ip route x.x.x.x "secondary router"
ip route y.y.y.y "WAN-interface"
ip route y.y.y.y "secondary router"
etc.
As a result the primary router will have two routes to the branch and will load-balance. If one next-hop fails (either the WAN interface or the secondary router), only the other will be used. If the next-hop comes back up, load-balancing will resume.
The other choice would be to use EIGRP over the WAN, and make sure the two routers become EIGRP neighbors. Then you can use the "variance" command to achieve unequal cost load-balancing between the two routers. Let me know if you need more information about this, but i think static routes will be sufficient in your situation.
HTH, Thomas

Two Routers off One Cable Modem?

Can I run two routers off one cable modem, one a hardwired Windows network and the other an Airport Extreme networking a Powerbook G4 and wireless printer?

No you cannot - unless you pay your cable internet service provider for two public IP addresses.
What I would suggest if you already have the base station but have not yet purchased the router:
- connect the cable modem to the Base Station's WAN port
- buy a 4- or 8-port ethernet switch. Connect to the switch the LAN port of the Base Station, and all of your hardwired PCs
What I would suggest if you already have a router and base station:
- connect the cable modem to the router's WAN port
- connect all the hardwired PCs to the router's LAN ports
- connect the Airport Base Station to one of the router's LAN ports, and configure the Base Station to function as a wireless access point per http://discussions.info.apple.com/webx/.59976caa

Networking a Laserjet 5si through two routers.

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