[ILUG] Delay between link up and forwarding frames?
kenn at bluetree.ie
Fri Jan 9 14:40:41 GMT 2009
> On Fri, 09 Jan 2009, Kenn Humborg wrote:
> > I've got machines (Dell PE2950) running CentOS 5.2
> > connected to a Dell 5448 GigE switch.
> > It seems that after bringing up an Ethernet interface
> > on the server, it is 30 seconds before I can ping anything.
> > That doesn't seem normal to me...
> > This breaks some things that require access to automounted
> > directories during boot.
> It sounds a bit like spanning tree is turned on on the switch. You could
> try either of:
> 1. Turn off spanning tree on the switch.
> 2. Change the spanning tree settings for that port to "portfast" or
> whatever the equivalent name is on your Dell switch.
> It might be something else, but that's what comes to mind in my
OK - I'll give it a try.
If I understanding it correctly, spanning tree is only needed on
switch-to-switch links, so I need to remember to turn it back on
if I ever connect a switch to one of these ports. Correct?
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