[c-nsp] Cisco 7600 WS6724-SFP link doesn't come up without intervention

[Walter Keen]

Greetings, has anyone seen the following condition?

WS-6724SFP with multiple LH , SX, and T connections, that operate
normally when a link fails and is restored (meaning, either through
far-end failure or shutdown command on that interface, then
failure-resolution or 'no shut'), but one ZX-connected link that will
not come back up if there is a loss of sync, until you physically unplug
the fiber jumper, and plug it back in.  We've tried many ZX gbics with
no change, and the distance is approximately 38km.  Other ZX connected
devices (at a distance of about 22km) do not show this behavior.  The
far end of this troubled link is a metro-ethernet provider who indicates
there is no configuration problems on their end, nor any errors they can
detect.