Hi group, I have a 2621 Router and an AUI/Fibre converter on the Fa 0/1 interface. Users are experiencing problems at the remote end of the fibre link (a 1900 switch). I have checked all ports and interfaces and nothing obvious is showing up. All ports are 1/2 duplex including the uplink (fibre port) which I am about to change soon to full duplex. (I've only just started here !!!) No errors show up on 'sh int fas0/1' but the following appears on the 'sh controller fas0/1' It doesn't look healthy to me, can anyone confirm this output ? rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0 rx_bpe_err=0, rx_soft_overflow_err=0, rx_no_enp=0, rx_discard=0 tx_one_col_err=1803830, tx_more_col_err=2144704, tx_no_enp=0, tx_deferred_err=3 802838 Any help appreciated, Phil. ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11077&t=11077 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]