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

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Good evening,

My LAN management guys are reporting that " interface is down with our
Cisco switch " . I have checked the log files on the Cisco switch and
I found the following errors:

23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to up
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to down
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to up
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to down
23w5d: %LINK-3-UPDOWN: Interface FastEthernet0/6, changed state to
down
23w5d: %LINK-3-UPDOWN: Interface FastEthernet0/6, changed state to up
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to up
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to down
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to up
23w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/6, changed state to down
23w5d: %LINK-3-UPDOWN: Interface FastEthernet0/6, changed state to
down
23w5d: %LINK-3-UPDOWN: Interface FastEthernet0/6, changed state to up


The interface is down for few seconds and comes up again multiple
times.

Any ideas? Cheers, Rob

surrealarmada@gmail.com


Re: changed state to up changed state to down FastEthernet LINEPROTO-5-UPDOWN
surrealarmada@gmail.com writes:
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Bad or loose cable? Invalid settings (duplex mismatch or something the like)?

Regards,
   Christoph Gartmann

--
 Max-Planck-Institut fuer      Phone   : +49-761-5108-464   Fax: -452
 Immunbiologie
 Postfach 1169                 Internet: gartmann@immunbio dot mpg dot de
 D-79011  Freiburg, Germany
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Re: changed state to up changed state to down FastEthernet LINEPROTO-5-UPDOWN
surrealarmada@gmail.com wrote:

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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.

Re: changed state to up changed state to down FastEthernet LINEPROTO-5-UPDOWN
JF Mezei wrote:
Quoted text here. Click to load it


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.

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