Connecting Two 3548XL's with GigaEthernet [7:9098]
I recently accquired two 3548XL's I want to connect both via giga ethernet. The problem I'm facing is that the link light will go up on one, but not on the other. I had the TX/RX ports reversed ie RX going to the TX on the other switch and vice versa. I configured both 0/1 modules with no negoiation auto, and duplex full. When I bring an interface up say on 3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right away. The link light stays up on the 3548XLA. When I switch the cables around (multi mode fiber) the opposite happens. IE. B interace comes up, and A goes down. I can't provide configs right now, but I will in a few hours (I'm not at home right now). I've tried different fiber cables and no go. I know for a fact they work. If anyone who has this type of config or knows how I should tackle it could drop me a line, I would appreciate it. -- "Sanity is calming, but madness is far more interesting." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9098&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Connecting Two 3548XL's with GigaEthernet [7:9098]
This might not help at all, but here it is anyway. I have the same setup, except that I am using GigaStack modules and a GigaStack cable. This is working without any problems. I am not an expert in fiber cables, but I would suggest that you check that GigaBit interfaces and make sure they're not disabled, they are using the same encapsulation, and they are set for auto in duplex and speed. Hth, Ole ~~~ Ole Drews Jensen Systems Network Manager CCNA, MCSE, MCP+I RWR Enterprises, Inc. [EMAIL PROTECTED] ~~~ http://www.OleDrews.com/CCNP ~~~ -Original Message- From: Marco P Rodrigues [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 19, 2001 2:33 PM To: [EMAIL PROTECTED] Subject: Connecting Two 3548XL's with GigaEthernet [7:9098] I recently accquired two 3548XL's I want to connect both via giga ethernet. The problem I'm facing is that the link light will go up on one, but not on the other. I had the TX/RX ports reversed ie RX going to the TX on the other switch and vice versa. I configured both 0/1 modules with no negoiation auto, and duplex full. When I bring an interface up say on 3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right away. The link light stays up on the 3548XLA. When I switch the cables around (multi mode fiber) the opposite happens. IE. B interace comes up, and A goes down. I can't provide configs right now, but I will in a few hours (I'm not at home right now). I've tried different fiber cables and no go. I know for a fact they work. If anyone who has this type of config or knows how I should tackle it could drop me a line, I would appreciate it. -- "Sanity is calming, but madness is far more interesting." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9106&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Connecting Two 3548XL's with GigaEthernet [7:9098]
Sounds like a bad fiber cable. __ Thomas Crowe Technical Director Research & Development CTS - Atlanta Phone: 770-664-3900 ext 45 __ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Marco P Rodrigues Sent: Tuesday, June 19, 2001 3:33 PM To: [EMAIL PROTECTED] Subject: Connecting Two 3548XL's with GigaEthernet [7:9098] I recently accquired two 3548XL's I want to connect both via giga ethernet. The problem I'm facing is that the link light will go up on one, but not on the other. I had the TX/RX ports reversed ie RX going to the TX on the other switch and vice versa. I configured both 0/1 modules with no negoiation auto, and duplex full. When I bring an interface up say on 3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right away. The link light stays up on the 3548XLA. When I switch the cables around (multi mode fiber) the opposite happens. IE. B interace comes up, and A goes down. I can't provide configs right now, but I will in a few hours (I'm not at home right now). I've tried different fiber cables and no go. I know for a fact they work. If anyone who has this type of config or knows how I should tackle it could drop me a line, I would appreciate it. -- "Sanity is calming, but madness is far more interesting." [GroupStudy.com removed an attachment of type text/x-vcard which had a name of Thomas Crowe.vcf] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9127&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Connecting Two 3548XL's with GigaEthernet [7:9098]
also . i think you have said this ...but make sure that on the switches TX on A - RX on B RX on B - TX on A i think you have done this or turn on portfast ... make sure you have just standard trunking on if on side neg and one off ...could case probs... i don`t think any of these could be causing the problems try changing the cable also move the gbic to the other port and try again but if you int is coming up .it could be spanningtree or something along those lines HTH steve >From: "Thomas Crowe" >Reply-To: "Thomas Crowe" >To: [EMAIL PROTECTED] >Subject: RE: Connecting Two 3548XL's with GigaEthernet [7:9098] >Date: Tue, 19 Jun 2001 20:36:24 -0400 > >Sounds like a bad fiber cable. > >__ > >Thomas Crowe >Technical Director >Research & Development >CTS - Atlanta >Phone: 770-664-3900 ext 45 >__ > >-Original Message- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of >Marco P Rodrigues >Sent: Tuesday, June 19, 2001 3:33 PM >To: [EMAIL PROTECTED] >Subject: Connecting Two 3548XL's with GigaEthernet [7:9098] > > >I recently accquired two 3548XL's I want to connect both via giga >ethernet. The problem I'm facing is that the link light will go up on one, >but not on the other. I had the TX/RX ports reversed ie RX going to the TX >on the other switch and vice versa. I configured both 0/1 modules with no >negoiation auto, and duplex full. When I bring an interface up say on >3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right >away. The link light stays up on the 3548XLA. When I switch the cables >around (multi mode fiber) the opposite happens. IE. B interace comes up, >and A goes down. I can't provide configs right now, but I will in a few >hours (I'm not at home right now). I've tried different fiber cables and >no go. I know for a fact they work. If anyone who has this type of config >or knows how I should tackle it could drop me a line, I would appreciate >it. > >-- >"Sanity is calming, but madness is far more interesting." > >[GroupStudy.com removed an attachment of type text/x-vcard which had a name >of Thomas Crowe.vcf] _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9177&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Connecting Two 3548XL's with GigaEthernet [7:9098]
Check your GBIC module. eg. LX ( long distance)or SX( short distance ). I think they should be SX. Todd -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Marco P Rodrigues Sent: Wednesday, June 20, 2001 3:33 AM To: [EMAIL PROTECTED] Subject: Connecting Two 3548XL's with GigaEthernet [7:9098] I recently accquired two 3548XL's I want to connect both via giga ethernet. The problem I'm facing is that the link light will go up on one, but not on the other. I had the TX/RX ports reversed ie RX going to the TX on the other switch and vice versa. I configured both 0/1 modules with no negoiation auto, and duplex full. When I bring an interface up say on 3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right away. The link light stays up on the 3548XLA. When I switch the cables around (multi mode fiber) the opposite happens. IE. B interace comes up, and A goes down. I can't provide configs right now, but I will in a few hours (I'm not at home right now). I've tried different fiber cables and no go. I know for a fact they work. If anyone who has this type of config or knows how I should tackle it could drop me a line, I would appreciate it. -- "Sanity is calming, but madness is far more interesting." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9158&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Connecting Two 3548XL's with GigaEthernet [7:9098]
These SC cables can be switched around, look for an arrow marking on each end of the switches' GBIC and make sure that the arrow pointing towards you (TX) is going in to the other end where the arrow is pointing away from you (RX). And do the same to the other connectors. 3548A Gi TX--RX 3548B RX--TX >From: "Marco P Rodrigues" >Reply-To: "Marco P Rodrigues" >To: [EMAIL PROTECTED] >Subject: Connecting Two 3548XL's with GigaEthernet [7:9098] >Date: Tue, 19 Jun 2001 15:33:12 -0400 > >I recently accquired two 3548XL's I want to connect both via giga >ethernet. The problem I'm facing is that the link light will go up on one, >but not on the other. I had the TX/RX ports reversed ie RX going to the TX >on the other switch and vice versa. I configured both 0/1 modules with no >negoiation auto, and duplex full. When I bring an interface up say on >3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right >away. The link light stays up on the 3548XLA. When I switch the cables >around (multi mode fiber) the opposite happens. IE. B interace comes up, >and A goes down. I can't provide configs right now, but I will in a few >hours (I'm not at home right now). I've tried different fiber cables and >no go. I know for a fact they work. If anyone who has this type of config >or knows how I should tackle it could drop me a line, I would appreciate >it. > >-- >"Sanity is calming, but madness is far more interesting." _ Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9119&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Connecting Two 3548XL's with GigaEthernet [7:9098]
Actually I got it working. SOMEONE at work here told me the cable I was using was good, and when I asked for another one he gave me another fiber cable which was sitting on a computer (without the caps on). Anyways, I got a new fiber cable (with the caps still protecting the fiber ends) and both interfaces came up. Thanks for the replies. On Tue, 19 Jun 2001, Ole Drews Jensen wrote: > This might not help at all, but here it is anyway. > > I have the same setup, except that I am using GigaStack modules and a > GigaStack cable. This is working without any problems. > > I am not an expert in fiber cables, but I would suggest that you check that > GigaBit interfaces and make sure they're not disabled, they are using the > same encapsulation, and they are set for auto in duplex and speed. > > Hth, > > Ole > > ~~~ > Ole Drews Jensen > Systems Network Manager > CCNA, MCSE, MCP+I > RWR Enterprises, Inc. > [EMAIL PROTECTED] > ~~~ > http://www.OleDrews.com/CCNP > ~~~ > > > -Original Message- > From: Marco P Rodrigues [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, June 19, 2001 2:33 PM > To: [EMAIL PROTECTED] > Subject: Connecting Two 3548XL's with GigaEthernet [7:9098] > > > I recently accquired two 3548XL's I want to connect both via giga > ethernet. The problem I'm facing is that the link light will go up on one, > but not on the other. I had the TX/RX ports reversed ie RX going to the TX > on the other switch and vice versa. I configured both 0/1 modules with no > negoiation auto, and duplex full. When I bring an interface up say on > 3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right > away. The link light stays up on the 3548XLA. When I switch the cables > around (multi mode fiber) the opposite happens. IE. B interace comes up, > and A goes down. I can't provide configs right now, but I will in a few > hours (I'm not at home right now). I've tried different fiber cables and > no go. I know for a fact they work. If anyone who has this type of config > or knows how I should tackle it could drop me a line, I would appreciate > it. > > -- "Sanity is calming, but madness is far more interesting." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9130&t=9098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Connecting Two 3548XL's with GigaEthernet [7:9098]
Uh, Is spanning tree blocking this port, dude?
-Peter Slow,CCNP Voice Specialist
- Original Message -
From: "AB+X&("
To:
Sent: Wednesday, June 20, 2001 7:14 AM
Subject: RE: Connecting Two 3548XL's with GigaEthernet [7:9098]
> Check your GBIC module. eg. LX ( long distance)or SX( short distance ).
> I think they should be SX.
>
> Todd
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Marco P Rodrigues
> Sent: Wednesday, June 20, 2001 3:33 AM
> To: [EMAIL PROTECTED]
> Subject: Connecting Two 3548XL's with GigaEthernet [7:9098]
>
>
> I recently accquired two 3548XL's I want to connect both via giga
> ethernet. The problem I'm facing is that the link light will go up on one,
> but not on the other. I had the TX/RX ports reversed ie RX going to the TX
> on the other switch and vice versa. I configured both 0/1 modules with no
> negoiation auto, and duplex full. When I bring an interface up say on
> 3548XL-A and 3548XL-B, the A comes up, the B comes up but goes down right
> away. The link light stays up on the 3548XLA. When I switch the cables
> around (multi mode fiber) the opposite happens. IE. B interace comes up,
> and A goes down. I can't provide configs right now, but I will in a few
> hours (I'm not at home right now). I've tried different fiber cables and
> no go. I know for a fact they work. If anyone who has this type of config
> or knows how I should tackle it could drop me a line, I would appreciate
> it.
>
> --
> "Sanity is calming, but madness is far more interesting."
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=9273&t=9098
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