Is there any chance there's a duplex mismatch? I doubt anyone uses half-duplex on Gigabit Ethernet, so this may be a clueless suggestion. However, that's the symptoms you would get. The side set to half would sense someone else sending while it was sending, stop, backoff and try again. The result of the thwarted transmission would be a runt with an FCS at the recipient.
Since you replaced the fiber already, I guess you better start swapping hardware. But it's really hard to tell which side to replace. The sender could be sending bad data. I think that's more likely than the recipient having some problem with receiving the data and reporting FCSs. So I would start on the sender (the one not reporting errors, despite possibly being the culprit.) Are there any media filters or other components in this link that could be causing a problem?? Priscilla Elijah Savage wrote: > > There is no fiber running through a ceiling. They are sitting > right next > to each other in the cabinets so a real short 3 meter fiber > jumper is > being used. > > > > -----Original Message----- > From: Larry Letterman [mailto:[EMAIL PROTECTED] > Sent: Friday, February 28, 2003 1:09 PM > To: Elijah Savage; [EMAIL PROTECTED] > Subject: Re: FCS Errors between 2 5500's [7:64072] > > > > are there any fiber running thru the ceiling ? > > I'd replace both ends of the 5500 hardware.. > > > Larry Letterman > Network Engineer > Cisco Systems > > > > > > ----- Original Message ----- > > From: Elijah Savage > > To: [EMAIL PROTECTED] > > Sent: Friday, February 28, 2003 5:26 AM > > Subject: FCS Errors between 2 5500's [7:64072] > > > > All, > > > > Last night I had to shutdown a gig fiber trunk between 2 5500's > to run > on a 100M trunk we setup as a backup. The FCS errors are only > showing up > on one side the fiber between the 2 cats were replaced but the > errors > are still showing up. Which side would you all say you would > replace the > fiber daughter card the one with the errors or the side without > the > errors? > [EMAIL PROTECTED] > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64103&t=64072 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
