Search results

L
Need sealed PC building advice for friend deploying to Bagram AFB!

I know this will not help, but I had a 3com 3station that was sealed. On board video, on board ethernet, 8 Mhz 286, no HD or floppy. Set to network boot. Doug
- L3Guy
- Post #16
- Dec 26, 2002
- Forum: Computer Building
L
NForce2 Audio

Check out thes review at VrRoundup While its "about" KT400 vs Nforce2, it has the best explanation of Nforce2 sound I have found. HTH. Doug Edit for Spelling.
- L3Guy
- Post #10
- Dec 25, 2002
- Forum: Motherboards
L
networking experts, Help with DB9-RJ45 connector

There are several situations where there is no passive converter between RJ-45 and DB9. Also, there is no standard for RS-232 over UTP that I am aware of. In that case, the brand of equipment will be necessary. If its T-1 / PRI, I can look it up. Cisco Console cable, no big. If its localtalk...
- L3Guy
- Post #4
- Dec 25, 2002
- Forum: Networking
L
What are my options to share the internet between two houses?

Wireless is your best option. With a road in the way, you would have to have permission to run cable of any type. With the bridge to bridge wireless, you can go for several miles with the right antennas and line of sight. I would look for devices that support external antennas. HTH Doug
- L3Guy
- Post #2
- Dec 1, 2002
- Forum: Networking
L
15Krpm SCSI - Fujitsu or Seagate ?

Yes. The 52 is a "15K.2" or second generation drive. The 53 is a "15k.3" or third generation drive. Both drives are great, but the newer 15K.3 drive is about 10% faster than the 15k.2 when they each use the Ultra 160 controller. Since the peak read speed of the 15K.3 drive is about 100 MB/s...
- L3Guy
- Post #26
- Nov 30, 2002
- Forum: Peripherals & Components
L
Making Shielded Cables

Any wire that is not grounded has the potential to become an antenna. Shielded cable works because the outer, grounded shield forms a Faraday Cage. Basically, if the shield is grounded, the electric field is the same inside the shield, blocking external electro-magnetic interference. If the...
- L3Guy
- Post #17
- Nov 30, 2002
- Forum: Networking
L
Building around the Asus A7N8X....

joepa99; I am going through the same excersize right now. Here is what I cam up with: Antec 840II Case & PS (400W) Asus A7N8X MB 512 MB Crucial PC2700 DDR - I recomend Name Brand Ram. Crucial is my personal favorite, but there are others that are equally good ( 2 * 256 DDR to use the dual...
- L3Guy
- Post #3
- Nov 30, 2002
- Forum: Motherboards
L
*Update* 6-way nForce2 Roundup Online

Evan; Thanks for asking. I am interested in add on controller performance. How about testing an Adaptec 19160 and a Seagate 15k.3 on the boards? :) I would also like to know which of the boards have holes to mount a water block. Thanks for testing the MSI. They looked like they had the...
- L3Guy
- Post #76
- Nov 30, 2002
- Forum: Motherboards
L
Why AMD? WHY???!!! (FBS Question)

ECUHITMAN; FSB is one aspect of a design, and CAN be a limiting factor in the performance. The Current Athlon gains only about 5% between 266 FSB and 333 FSB. The reason that the P4 design has (and requires) a faster FSB is its innovative cache design. The P4 tends to use more memory and FSB...
- L3Guy
- Post #13
- Nov 26, 2002
- Forum: Motherboards
L
Good CCNA/CCIE study books

tolbyn; Jeff Doyle's 2 books are excellent. I have both, and would not give either of them up. Neither is really geared for tests as much as to raise your understanding of routing protocols, with emphasis on Cisco implementations. It also covers the Cisco proprietary protocols that you need to...
- L3Guy
- Post #4
- Oct 24, 2002
- Forum: Networking
L
HELLLP ME Number of NODES in a Ehternet Network

Kashan answered how many hosts in an IP network. Good answer. :) My definition of the question "Does anyone know the number of nodes in an ethernet network? " is a bit different. To me, a node is defined as any device that has a MAC address. In this context, I would define a "network" to be...
- L3Guy
- Post #4
- Oct 7, 2002
- Forum: Networking
L
High speed ethernet on 6th floors building

Sorry to answer questions with questions, but here goes: What do you consider "High speed networking " Second, describe the building and the number of users better. Third, describe any special requirements such as VOIP ( The new network AIDS), wan needs, legacy requirements, odd protocols...
- L3Guy
- Post #4
- Oct 6, 2002
- Forum: Networking
L
VPN Suggestions

Look at the Netscreen. Its about $450 (for the smallest one :) and handles 10 VPN tunnels. Unfortunately, not much experience with them yet. HTH Doug I hate when I forget to spellcheck something. :)
- L3Guy
- Post #16
- Sep 23, 2002
- Forum: Networking
L
Need a basic block diagram....

When planning a data network, the biggest single factor is size. A twenty-computer network has fewer complexes than a 200, which is less than a 2000, is less than... AS your network grows, the complexity required becomes greater. The second largest factor is the number of geographic sites. The...
- L3Guy
- Post #13
- Sep 18, 2002
- Forum: Networking
L
Dynamic and static ips easy way to switch????

I have found on Win 98, that plugging the PCMCIA NIC into the other slot will be recognized as a different nic, and can have a different address. Or a different NIC type will also be a seperate IP address. HTH Doug
- L3Guy
- Post #5
- Sep 17, 2002
- Forum: Networking
L
Any software router that will let me control/monitor bandwith?

Check out the NetScreen router/firewall. Its ASIC based, and the smallest one supports 10 VPN tunnels, traffic shaping, true firewall and basic routing. Not cheep at $400 or so, but its purpose built for just the sort of thing you mentioned. I also don't have much experience with them. I am...
- L3Guy
- Post #4
- Sep 17, 2002
- Forum: Networking
L
Need a basic block diagram....

AS you can see, fiber optic backbone can mean several things. Also copper telephone lines arn't very specific, either. POTS, "4 wire" E&M and T-1/PRI are all on copper, as well as DS-3. :) I am assuming you have a Gigabit ethernet backbone on a campus that you want to transport telephone...
- L3Guy
- Post #4
- Sep 17, 2002
- Forum: Networking
L
Lowest Cost Rate Limiting Switch - *sigh*

Take a look at Netscreen. I saw it at a road show, and it looked good. However, I have zero personal experience. The two port version was $450 list, and rate limiting, firewall and 10 VPN tunnel terminations. Sounds a bit too good to be true, but what the heck. Doug
- L3Guy
- Post #4
- Aug 14, 2002
- Forum: Networking
L
Is there a router that doesn't include a firewall??

You can use a "real" router, such as a Cisco 2600 series as long as it has 2 Ethernet ports. Completely configurable. Nothing that can't be disabled or bypassed if you are good enough and truly understand the technology. With that said, everyone is correct that without NAT, a router requires...
- L3Guy
- Post #8
- Aug 14, 2002
- Forum: Networking
L
alrighty... Now that I have this job, i need to learn how to do it

There are several professionals and many other knowledgeable people on the forum. I would simply ask specific questions as they come up. If I needed a private LAN within a LAN, I would use a small firewall or "router" to segment a small switch (8 port) from the rest of the network. While I...
- L3Guy
- Post #8
- Aug 14, 2002
- Forum: Networking
L
Making your own CAT5 Cable?

IME, solid cables with keystone jacks used in infrastructure are relatively easy to do if you pay attention and read the relevant instructions before hand. No major tools are required. No big deal. Patch cables are another matter entirely. If you make patch cables out of solid cable and use...
- L3Guy
- Post #7
- Jul 31, 2002
- Forum: Networking
L
Help T1 and Infrastructure, Out of my Depth

Good Answers so far. T-1 is delivered on 2 pair of UTP wires. It is terminated in a small box called a smart jack. The smart jack is line powered, and is the last piece that the Telco owns. Usually, the smart jack is near the entrance of the wire that the T-1 is carried on. After the smart...
- L3Guy
- Post #5
- Jul 31, 2002
- Forum: Networking
L
shielded cat5 questions

IMHO, any interference that cat 5 can't handle, probably requires fiber. I realize the cost penalty is high, but it is immune to EMI. Mater of fact, the NIC may be only available at 10 Mb for fiber. If I had to try things, I would definitely use Cat 5E rather than cat 5 for this. My take is...
- L3Guy
- Post #3
- Jul 29, 2002
- Forum: Networking
L
T1 crc & frame errors -- ideas?

The first thing that comes to mind is that Qwest is also furnishing timing, and you are getting timing slips. I know that Qwest isn't supposed to provide timing, but they are a Telco. ( All the bells revel in mediocrity ) I would turn off timing on your box and see if the circuit runs "without...
- L3Guy
- Post #2
- Jul 28, 2002
- Forum: Networking
L
VPN???

Just to be clear, a "tunnel" is a delivery mechanism that allows an encrypted packet that is encapsulated in IP to be delivered across a network. In the case we are talking about, we take an IP packet, encrypt it, and wrap it in IP to deliver it. Why? If we encrypt the packet, we have very...
- L3Guy
- Post #7
- Jul 27, 2002
- Forum: Networking
L
6 twisted pair telephone wiring in new apartment. 100baseT possible?

Even if the wire was CAT 5 rated, placing a phone on one of the pairs is a really bad idea. If I remember correctly, ring voltage is 85 V! 85V should be enough to play havic with anything close to it. Also the practice of "tapping off" phone lines will render unusable (for data) any line this...
- L3Guy
- Post #7
- Jul 21, 2002
- Forum: Networking
L
Anyone taken the Cisco IPCC or ICM class?

I just finished with the two week IPCC "Boot camp" My head is spinning with thoughts of call centers, ACD's, IVR/VRU's, etc. The Script editor was cool. I still can't get over the multiple IP addresses on a NIC. The claim is its a way to prioritize traffic. Go figure. I didn't even know it...
- L3Guy
- Thread
- Jul 19, 2002
- Replies: 0
- Forum: Networking
L
Networking troubles. please help

Sorry for the short reply. Bag network neighborhood for debuging. Use Ping. Ping 127.0.0.1 ping yourself :) ping the other pc. report the results. HTH Doug
- L3Guy
- Post #2
- Jul 11, 2002
- Forum: Networking
L
Subnet Mask Question

Subnet masks have one function. It is used by the hosts and routers to determine if the route (IP address) is local or remote. If you do a binary AND on the Network address and the subnet mask, you get the network that the route is destined for. Applying the same mask to the interface IP...
- L3Guy
- Post #2
- Jul 11, 2002
- Forum: Networking
L
Samba only way to connect Linux server to other workstations?

LOL! Its the difference between "net use" and "net copy". In other words NFS allows a unix machine to mount another unix machine volume over the net. NFS does have issues. The two biggest are its use of UDP as a transport and its use of RPC (remote procedure calls) to impliment it. Udp has...
- L3Guy
- Post #15
- Jul 7, 2002
- Forum: Networking
L
why is sdsl so expensive?

IMHO, SDSL is a commercial service, and having high upload bandwidth allows servers at that site. I have SDSL at home at is marketed as ADSL from Speakeasy. Servers are OK, but if I use all my uplink bandwidth on a consistent basis, I will be converted to commercial service. I did not know it...
- L3Guy
- Post #2
- Jul 7, 2002
- Forum: Networking
L
Slow Network Performance - Office Computer

B node or Mixed sound like refrences to netbios name resolution. In B-node resolution, the workstation broadcasts to resolve an IP address to a netbios name. In mixed, it uses the WINS server to resolve netbios names, and falls back to broadcast if the WINS server does not respond. Doug
- L3Guy
- Post #13
- Jul 7, 2002
- Forum: Networking
L
How do I remotely access a computer over the internet?

If it were mine, I would look at one of the new "soho routers" with VPN capabilities. I saw a Linksys with this the other day. Place the routers with a broadband connection on each site. Use the VPN to transport your PC-anywhere, Windowes Terminal services, etc. This way you can enjoy a secure...
- L3Guy
- Post #6
- Jul 7, 2002
- Forum: Networking
L
Samba only way to connect Linux server to other workstations?

Just a side note. At one point, there was a PC NFS client. That way, you ran NFS on the server, and the PC's could attach natively. I ran it at ACN while I was there, and later ran it on a LAW net in downtown Chicago. IMHO, Samba is rather ?bss ackwards?. However, if it works... Doug
- L3Guy
- Post #11
- Jul 6, 2002
- Forum: Networking
L
Network 2 cpus with modems?

You are right, of course. Each computer has a modem. One runs dial up client, the other RAS server. The NIC was your existing connection to the internet (which I assumed out of thin air) (my bad) :) The only issue with the proposed setup is most modems require a phone switch to connect, so...
- L3Guy
- Post #5
- Jul 6, 2002
- Forum: Networking
L
Can't ping other comp in LAN ive tried everything HELP!!!

Try pinging 127.0.0.1 on each computer. If that answers, the software is installed and active. Then try pinging the 192.168.0.1 or 2 on address of the machine you are on. if they are connecte to a hub / switch and are communicating, they should answer their own pings. Ods are one of the 2...
- L3Guy
- Post #6
- Jul 6, 2002
- Forum: Networking
L
Network 2 cpus with modems?

In earlier versions of windows, there was a service called RAS that allowed one computer to dial another. Your machine with a NIC would run RAS Server, and your other machine would run the client. In Win 3.1, the client was a separate install. In win 98 or later, you use the dial up network...
- L3Guy
- Post #3
- Jul 6, 2002
- Forum: Networking
L
Re-architect PC for a Front End Processor

Because of increasing heat and sound issues, I was wondering what kind of impact on a PC it would have to place the APG slot in the southbridge, move the hard drives to northbridge. This would create a platform where all the IO devices were attached to Southbridge, and core computing functions...
- L3Guy
- Thread
- Jun 9, 2002
- Replies: 3
- Forum: Ask a Technical Professional
L
Hubs versus switches

I agree that switches are "good", no one has brought the hubs strengths to the party. Hub Pro's. Hubs have less latency than switches. Collision detection forms a degree of flow control with a 2 to 1 situation. Hubs are still cheaper than switches. Switch Pro's. Switches can be full duplex...
- L3Guy
- Post #8
- Jun 9, 2002
- Forum: Networking
L
Help spidey design a server farm net

I tested with Ver 5.2(1) code on a WS X4012 WS x4232-RJ-xx WS x4248-RJ Probably old. I haven't payed much attention. Doug
- L3Guy
- Post #8
- Jun 7, 2002
- Forum: Networking

RESOURCES

Top Bottom