General discussion

Locked

distance beetween hub/switch

By nas ·
hello there,

I have question regarding the distance when connection hub to switch and switch to switch. I have read that the distance between hub and switch may as long as about 300 meters. I don't know anything about switch to switch connection.

So the question is what is the maximum distance between (hub and switch) and (switch and switch) over the UTP CAT5 cable.

Best Regards,
nas

This conversation is currently closed to new comments.

6 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

distance beetween hub/switch

by DAO251 In reply to distance beetween hub/swi ...

It depends not on the Cable CAT only but mainly on speed.

300m is too optimistic :-(( It is maximal diameter (not cable length!!) and for 10BaseT only (that is distance between a workstation and a hub or switch should not exceed 150m for UTP CAT5). In case of 10BaseT you can prolong the distance using intermediate repeater (hub).

Assuming we are talking about FastEthernet(802.3u) 100BaseT -- maximum theoretical cable length is 100 meters. However, maximal distance between a wks and a switch is also 100m, that is you can not connect wks-100m-hub-100m-switch, but only wks-50m-hub-50m-switch.
Distance between switches should not exceed 100m too.

Collapse -

distance beetween hub/switch

by DAO251 In reply to distance beetween hub/swi ...

sorry, was not quite correct.
yes, you can connect wks-100m-hub-100m-switch. But, you cannot connect wks-100m-hub-100m-HUB.
distance between switches is still 100m.

Collapse -

distance beetween hub/switch

by nas In reply to distance beetween hub/swi ...

Thanx, that was not exactly what I expected but ... thanx anyway ...

Collapse -

distance beetween hub/switch

by dbowlin In reply to distance beetween hub/swi ...

The "official" distance between any two devices is 100 meters, or roughly 300 Feet. There are several factors which come into play than can decrease or increase this distance.

First is the quality of your wiring. There is Cat 5 and then there is Cat 5. If your wiring is right up to spec, away from electrical interference, terminated properly, installed with no kinks or tight bends, not pulled too hard during the install you should be able to go quite a bit over the 100M recommendation.Second is the speed of your communications. 100Mbps requires tighter wiring specs than 10Mbps and is more prone to failure. If your wiring is up to spec as mentioned above, this will not have much of an effect. But my experience is that wiring israrely all the way up to spec, so this is worth some consideration.

Third is the duplex setting. Full duplex is much more forgiving of distance. Because the two devices do not need to take turns, they are less likely to suffer data loss due to the distance/timing constraints of half duplex communications.

One other thing that deserves mention. If you are running switch to switch, hub to hub, hub to switch, you probably need a cross over cable where the 1/2 and 3/6 pairs are switched oneach end of the wire. Some devices have a setting to eliminate the cross over need, so make sure you check.

If you need to go significantly over the 100M limit, consider fiber. The costs have decreased quite a bit and distance constraints aremeasured in 1000's of meters on even the lowest grades of fibers. Media converters for your switches/hubs are only a couple of hundred dollars. If you can find someone who knows what they are doing, installation may be fairly reasonable as well.
I hope this helps. Good luck.
Dan

Collapse -

distance beetween hub/switch

by nas In reply to distance beetween hub/swi ...

Good answer, may I stay in contact with you?

Collapse -

distance beetween hub/switch

by nas In reply to distance beetween hub/swi ...

This question was closed by the author

Back to Windows Forum
6 total posts (Page 1 of 1)  

Related Discussions

Related Forums