[c-nsp] Strange Cisco Behavior

Nicolaj Ottsen no at webpartner.dk
Tue Nov 23 17:59:09 EST 2004


Was any interfaces in "error disable" state before you rebooted the box
?


> -----Original Message-----
> From: Alexandra Alvarado [mailto:aaaa at telconet.net] 
> Sent: 23. november 2004 21:07
> To: cisco-nsp at puck.nether.net; Alexandra Alvarado
> Subject: [c-nsp] Strange Cisco Behavior
> 
> Hello,
> 
> PROBLEM: Today I had the same problem 3 times.  I use 
> Catalyst 3550 switches.  The problem was that suddenly 
> clients loss the internet access service; and the switch that 
> conects this clients lost "the routing capacity", what I mean 
> is that I can access via telnet to that switch only since 
> another device with the same network, after reboot the switch 
> all was fine.  But I can't find any cause of this problem and 
> I don't have any syslog message.
> 
> I saw some inconsistency in the switch configuration:
> 
> 1)  "spanning-tree bpduguard enable" this is in ports thas no 
> has "spanning-tree portfast"
> 2)  spanning-tree portfast
>      spanning-tree bpduguard enable
>      "spanning-tree guard root" this command has no 
> consistency with bpudguard
> 
> Could this configuration cause the problem mentioned above, 
> and If no what could be the real cause of the problem?
> 
> 
> Thanks 
> 
> 
> Alexandra Alvarado
>     
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