changed state to up changed state to down FastEthernet LINEPROTO-5-UPDOWN

Bad or loose cable? Invalid settings (duplex mismatch or something the like)?

Regards, Christoph Gartmann

I have some nodes which do this when they reboot. First, etherenet comes up "default", then the powerup script defines the ethernet port and the port temporarily goes down, then as the OS (VMS in my case) comes up, at one point, it takes over the ethernet port and it also goes down for a second or two.

no logging event addr-flap carrier-delay 10

Will help. It basically tells the switch to wait 10 seconds before declaring that the ethernet link is down. The first one reduces the number of syslog messages being issued.

Sorry about that . addr-flap doesn't seem to work. And I can't find a reference for it either (although my switch says it supports it.

SWITCH1(config-if)#logging event ? addr-flap Enable and Disable Address Flap messages link-status UPDOWN and CHANGE messages subif-link-status Sub-interface UPDOWN and CHANGE messages

Obviously, link-status is the one to really remove it. It seems to generate 2 messages (LINEPROTO-5 and LINK-3 messages) whenever the link changes.