From: Sam Joseph (samjoseph747@hotmail.com)
Date: Sun Mar 21 2004 - 09:41:50 GMT-3
Hi guys,
We called 3COM and explained the problem. 3COM wanted us to put all the
Interfaces Speed and Duplex to be set manual. Earlier we had it set for auto
negotiation. It is one of those pretty basic stuff, we overlooked. Once we
set that, the ports came online.
Any way thanks a lot for your Inputs. They were very valuable.
---Sam.
>From: "phase90" <phase90@comcast.net>
>Reply-To: "phase90" <phase90@comcast.net>
>To: "Sam Joseph" <samjoseph747@hotmail.com>, <KWygand@customonline.com>,
><ccielab@groupstudy.com>
>Subject: Re: 3COM Question
>Date: Thu, 18 Mar 2004 21:59:05 -0500
>
>Sam,
>
> This is 1 of the perils if doing your own fiber. 99.9% of the time
>you'll be OK. In this case your fiber run distances may be fine but you may
>have a "hot" transmitter on switch #1. The only way to tell for sure any of
>this is to have 1 of these gents with the optical instrument that measures
>all of the optical transmission levels and also the loss over the actual
>fiber run you are connecting it to. Most sites
>I have experience with never do this as it all costs $$$. Best of luck with
>the issue. Please let us know
>what it turns out to be.
>
>
>Jerry
>----- Original Message -----
>From: "Sam Joseph" <samjoseph747@hotmail.com>
>To: <KWygand@customonline.com>; <phase90@comcast.net>;
><ccielab@groupstudy.com>
>Sent: Thursday, March 18, 2004 9:05 PM
>Subject: RE: 3COM Question
>
>
> > Thank you Guys.
> >
> > Will definitely take a look at the Fiber Patch?.
> >
> > ---Sam.
> >
> >
> > >From: "Kenneth Wygand" <KWygand@customonline.com>
> > >Reply-To: "Kenneth Wygand" <KWygand@customonline.com>
> > >To: "phase90" <phase90@comcast.net>, "Sam Joseph"
> > ><samjoseph747@hotmail.com>, <ccielab@groupstudy.com>
> > >Subject: RE: 3COM Question
> > >Date: Thu, 18 Mar 2004 20:42:20 -0500
> > >
> > >Jerry & Sam,
> > >
> > >Yes I've heard this before too. You should definitely take a look at
>that
> > >as well.
> > >
> > >Ken
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com on behalf of phase90
> > > Sent: Thu 3/18/2004 8:13 PM
> > > To: Sam Joseph; ccielab@groupstudy.com
> > > Cc:
> > > Subject: Re: 3COM Question
> > >
> > >
> > >
> > > Sam,
> > >
> > > Is it single-mode fiber runs? If it is, it could be the
> > > attenuation on the fiber is not
> > > enough and the TX on port 1 on your Sw 1 is burning out the RX on your
>Sw
> > >2.
> > > This happened to my network 1 time when someone ran a single-mode
>fiber
> > >for
> > > on a 1 meter jumper in between a router
> > > and a Lightstream 1010. This is way out of spec and yet it ran fine
>for
> > >over
> > > 2 years until the PAM on
> > > the LS1010 couldn't take it anymore and just burnt out. Worth a look.
> > >
> > >
> > > Jerry
> > >
> > >
> > > ----- Original Message -----
> > > From: "Sam Joseph" <samjoseph747@hotmail.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Thursday, March 18, 2004 7:26 PM
> > > Subject: 3COM Question
> > >
> > >
> > > > Hi Group,
> > > >
> > > > Wanted to throw in this and let me know, what you Cisco Experts
>think
> > > about
> > > > this.
> > > >
> > > > At my work, We have 3COM 9300 ( 12 port Fiber) switch. This Sw has
>Layer
> > >3
> > > > capabilities. Upart from Default Vlan we created one more VLAN.
>Thats
> > >all.
> > > > No inter VLAN communication. We exhausted all 12 ports on Present
>Sw.
> > > >
> > > > We went ahead and bought another 3COM 9300 Sw. When Hooked the
>second
> > > > switch, it was hooked as a cascading chain. Port 1 from Sw1
>Connected
>to
> > > > Port 1 of Sw2 with Fiber Cross Over cable.
> > > >
> > > > It worked for some time. May be 6 --- 8 Months. Then the Port1 on
>Sw2
> > > > Failed. We thought Port1 went bad on Sw2. We moved it to Port2.
>After
>a
> > > > Month Port2 on Sw2 Failed. We moved it to Port3 now. It has been
>working
> > > > Okay since then.
> > > >
> > > > This Morning, Port4 on Sw2 failed. We moved it to Port5 on Sw2.
> > > >
> > > > Is this a symptom of switch2 going bad one port at a time?. or there
>is
> > >a
> > > > missing Link.
> > > >
> > > > Your Earliest Response will be Appreciated.
> > > >
> > > > ---Sam.
> > > >
> > > > _________________________________________________________________
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