Problem with Peer-2-Peer

I'm novice to networking...I am trying to establish P2P network for my home computers. One is P4 with Intel GBF865 Motherboard and other is PIII with tomato motherboard (don't remember its model number)

I have installed Realtech's 10M/100Mbps NIC cards. Both of the cards are same and it seems as the computers are accepting the new hardwares. I can even see the icons in the taskbar. But while I connect try to establish networking using twisted-pair (4 pair-RJ45), the PC with PIII board shows the light glowing (NIC-led) while the P4 does not show any activity. If I manually disable and re-enable the connection from "Network Connection" in the P4, a balloon shows that says "A Network Cable is Unplugged!", whereas, the PIII tells informs that LAN has been established.

I have tried my best... but nothing seems to change. I even tested the card at other location, and both of them seem to work on others' pre-established network (however I tried one at a time). I've also checked that the cable is working fine with cross-over adjustment.

Once I used a 10Mbps hub in between, then it showed a connection on both of the computers, but it seemed as if the connection was not working but only showing to be working. Since then the PIII is showing 10Mbps connection, as the hub had that speed.

Can anyone please tell me what can I do to solve this problem?

- Its not me!
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Are u sure that ur crossover cable to connect the two machines?
OOoopsss! Typo...

Are u sure that ur USING A crossover cable to connect the two machines?

do the both belong to same  network i mean same subnet mask and same workgroup....
What is the OS u r using in both..........
did u ping one from other..... what is the result...........

If what u said is true then better check with other crossover cable..........
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deepeshpAuthor Commented:
yeah sure! they are cross-over cables (1=3, 2=6, 3=1, 6=2)
both of them have assigned to the workgroup named WORKGROUP
both of them are running the same version of Windows XP (Service pack 2)
since no connection i havent tried the ping part

- Its not me!
if u get no connection established then nothing to do with other parts...........

need to check the cable.... can u get a branded cable  and check it.......... instead of the man made cable.............
One more thing is to crosscheck with the the NIC self ping to localhost

are the NIC set to same speeds that is  10 MB/100mb/auto

if u find the above seems to do nothing with........
then change the crossover cable with a branded one........
deepeshpAuthor Commented:
Thank you thribhu,

i need to do the cable thing on my own as they would not fit through the hole that allows the cable to get into my room. also it needs to be atleast 15 m long... so that seems rather ...'not possible thing'....

any suggestion?

MR. deepshp,

step 1:
check your cable configuration: is it match like this


or prepare your RJ45 connectors again.

step 2:
check your NIC are properly Installed

step 3:

they must be in same workgroup
try this IP scheme





hope it will solve your problem

When crimping rj-45 connectors I sometimes get wires that twist out of position when I insert them into the connector or sometimes one wire doesn't go in all the way.  I suggest you attach new connectors and examine the connectors with a magnifying glass before you crimp them.
deepeshpAuthor Commented:
dear miroofi75,

I did exactly as your direction, but this isn't working. my cable modem runs ok with the same nic card, but no never with lan.

- Its not me!
crimp it again and use  branded cable ..... and try this......

White orange                white green
orange                          green
white green                   white orange
blue                              blue
white blue                     white blue
green                            orange
white brown                   white brown
brown                            brown

ofcource this is same as u said but any have check this color combination if u have ......................

as there r 2 Australian standards 538a and 538b for crimpimg crossover and stright cables...........

All the best...........


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deepeshpAuthor Commented:

ok tell me first, has the colour got to do with the network? or its just for the sake of remembering them by heart. obviously, my cables are different than that youve mentioned, so should i try doing the same order colours? or its ok as long as the rule is followed.

- Its not me!
What type of cable are you using?  Cat5, 5e, 6?  The color scheme should match the layout shown by thribhu.  I am wondering if the type of cable you are using is not rated to do networking least not at the speed you need. I have had customers re-use their existing cabling from former networks...only to have problems later on.  Once they ran Cat 5 or later, the problems cleared up.  Make sure it is a networking cable that you are using and that it is able to handle 10/100 traffic.

The order is important, but so are the colors.  The cables are twisted in pairs...and then the pairs are twisted together....and they are twisted in a way that you don't want certain cables running next to eachother.  So the order of the colors are important because of the way they run through the cable.  If you flip flip the blue and brown wires (for example) you might have the same order on the rj45 jacks...but you MIGHT get problems because the data is flowing through the cable in a way that is out of standard...i.e.  there could be interference from one wire to the next if not put in the right order.
deepeshpAuthor Commented:
Oh! thanks a lot! I never thought about that,

Ive got two sets of cables, and they say:
Cable 1: AM International (Australia) ENHANCED CATEGORY 5 PLUS TESTED TO 350 MHZ.... (about 12 Metres long)

Cable 2: AVAYA-I CAT 5E.... (more than 16 Metres long)

By the way, does the length matter? if yes, whats the limit??

for cat5 200 meters no problem ,,,,, but technically till  180 meters  there should not be any problem..........

In your case ithink it does not matter...........
If your cards are working individually on another network, you can eliminate your cable by moving the two systems next to each other and using a 'comercial'/working/borrowed crossover to test (as mentioned above).

My feeling is that you have encountered a 'wierd one' ;-) What I mean by this is...

I bought 2 network cards and had EXCATLY the same problem, after extensive mucking around (weeks, I was new to home networking then) I noticed that the MAC address on BOTH! cards was the same. (they were also realtek cards, but a much older version) You can do an IPCONFIG /all at a command prompt to get the MAC addresses.

(that was a fun experience, 2 new cards, homemade cable and new terminators, and no way of independant testing. I had a faulty terminator AND 2 dud network cards. I can feel your stress, but i did learn a lot)

I replaced one card and all worked well. I hope it is as simple as that for you.


Other thoughts if needed...
XP firewall getting in the way? (I dont think so but check anyway)
do the cards have a dos diagnostic (earlier versions did). you can boot dos on both systems and have the cards can do basic comms/link testing.

deepeshpAuthor Commented:
I finally made it possible to connect Cross-Cable for P2P, and both have their defined IP addresses. But still i cannot do the ping.

what do i do next?

- Deepesh
run ipconfig /all on both mahcines, and post the results here please
deepeshpAuthor Commented:
I made dual boot with Windows 2000 on both the PCs, now it works when both of the PCs are running Win2000, but 'no no' with Windows XP. I also did clean installed WinXP on PIII but it did not help. I want to use XP on both the PCs....however I cannot clean install XP on P4 at the moment for some reasons.

Heres the summary:
I want PIII with XP : I want XP on P4 as well
Win 2000 on PIII : Win 2000 on P4 ==> worked!
Win 2000 on PIII : Win XP on P4 ==> did not work!
Win XP on PIII : Win 2000 on P4 ==> did not work!
Win XP on PIII : Win XP on P4 ==> did not work!

I tried to match all the configurations of the IP and NIC etc for each case... but nothing is working!

The only thing remained is to Re-install (Clean Install) on P4 which I cant do immediately. Any suggestion?

- Its not Me!
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