Hooking up 2 switches together generally is not a problem. But I have to ask. What is the length of cable between switch 1 and 2? I'm thinking that if one of the switches is not boosting the signal that the intermittent problems might be related to the length of one of the cables. Would be curious to know what types of lengths we are talking about. And whether it is possible to connect the 2 switches up (As a test) sitting next to one another with a very short cat5 cable.
Mike On Fri, 2004-03-19 at 15:36, Jon Copeland wrote: > I'm having some difficulty finding out what could be the problem in the > following scenario. > > http://members.shaw.ca/jonno/Images/misc/lan_diagram.jpg > > Switch1 is attached to Switch2 via a straight CAT5 cable, the Switches > each have Auto mdi/mdix capability and are both different brands (SMC 5 > Port and Eusso 5 port). Any PC attached to Switch1 that tries to ping > the server will receive intermittent replies. > > http://members.shaw.ca/jonno/Images/misc/the_ping_results.JPG > > From the server you can ping anything on the internet. It has 2 NICs > in it, one connected to the cable modem and the other connected to > Switch2 (eth0 and eth1 respectively) (NOTE: The server is *NOT* where > the problem lies, my suspicions lie with the communication between the > two switches.) <-- The reason for these suspicions is because when I > plug the CAT5 cable that connects these two switches directly into the > cable modem I can get an IP address from my ISP and browse the internet > normally. This is how I'm able to send this message. (The cabling is > fine, all the wiring has been crimped according to the 568B wiring > standard. And since I can see the internet when Switch1 is directly > attached to the cable modem it can't be a wiring problem between Switch1 > and the Cable Modem or Server) > > Since both Switches support auto-crossover (mdi/x) on each port they > should be able to be daisy-chained together using a normal cable (I've > also tried a crossover cable). So in essence any PC's connected to > Switch1 *should* be able to talk to any PC's connected to Switch2. And > this is not what is happening, well, the ping replies shown above tell > us that communication between Switch1 and the server is happening > intermittently for some obscure reason. This is where the problem is. > > I have swopped the two Switches around and I get the same problem. My > conclusions lead me to believe that the problem arises when the two > switches are connected with each other, IE, any PC on Switch1 cannot > *fully* talk with any PC on Switch2. > > Previous to this the network was working fine as all the PC'S including > the server were attached to one Switch so there was no 'daisy-chaining' > involved. > > Is there something that I'm missing out or something that I'm not doing? > > -j- > > > _______________________________________________ > clug-talk mailing list > [EMAIL PROTECTED] > http://clug.ca/mailman/listinfo/clug-talk_clug.ca -- Mike Petch CApp::Sysware Consulting Ltd. Suite 1002,1140-15th Ave SW. Calgary, Alberta, Canada. T2R 1K6. (403)804-5700. _______________________________________________ clug-talk mailing list [EMAIL PROTECTED] http://clug.ca/mailman/listinfo/clug-talk_clug.ca
