Cable too long? 3

[RobUstini]

Hi All,

I have a weird problem. I have a Cisco Router, and a Linksys router. I plug a pc into the cisco router and everything is fine. I plug it into the Linksys router and all the correct lights come on, but I can't ping the
router at all.

Now the cable I am using is pretty long (about 50-60 yards) and if I use
another cable that is shorter (1-2 yards) then the pc works fine.

I don't understand - why does the cisco router work just fine, but the
linksys one not work at all - is it just the cable length or is there
something else I should do ??

All help/suggestions greatly welcomed.

Thanks,

Bob.

 

[MTandSAV]

router to pc is straight cable
router to router is cross cable. Try a cross for the cisco to linksys router

CCNA, CCNP..partly

 

[cdogg]

50-60 yards is over the 100ft recommendation for CAT5. You need to have a signal repeater somewhere in the middle if you need that long of a cable.


~cdogg
[tab]"All paid jobs absorb and degrade the mind";
[tab][tab]- Aristotle
[tab][navy]For general rules and guidelines to get better answers, click here:[/navy] faq219-2884

 

[bcastner]

I am with cdogg on this one.
The cable length prevents the two devices from autonegotiating.

 

[bcastner]

I should say,

I am with cdogg on this one.
There is a cable issue.
50-60 yards is within the specs for a cable run for Cat5.

 

[bcastner]

I suspect cdogg and I had a brain freeze converting yards, to feet to meters.

For regular Cat5, stay within 100 meters. For low-cap Cat5 you cam run longer cable lengths.

Your "50-60" yards should be perfectly acceptable, if there are no other cabling issues. What I have seen fairly often is a cable that is straight-thru pinned. To provent cross-talk, youi want a true cross-over cable connection between the routers.

 

[cdogg]

Right-o! Guess I posted that on the "burned out" portion of my afternoon. Yes, bcastner is correct. It is 100 meters or 328ft.

One thing to note is that cable lengths for CAT5 can easily exceed 100m on a low-collision network (two PC's for example). The more complex and active your network is, however, lost or corrupted transmissions start to occur over the 100-meter mark. Just some food for thought...

Bob,
You should check the cable for kinks and tight turns. Both can indicate possible damage to the cable. You may want to replace the connectors at each end as well.


~cdogg
[tab]"All paid jobs absorb and degrade the mind";
[tab][tab]- Aristotle
[tab][navy]For general rules and guidelines to get better answers, click here:[/navy] faq219-2884