Cisco Switch

[ferretmaster]

Just a quick question. I am setting up a cisco 3550 switch for one of our remote sites. The first port on the switch will be connected to a router on the site. The Switchport mode is showing up as follows on interface fa0/1

"Switchport mode dynamic desirable"

will this cause any issues?

 

[GhostlyPea]

It means that it will try and form a trunk link with router. If you're having trunks then just configure them manually

- Pea0n

 

[s0ck]

It means whatever you plug into it will 'just work'

Whether that be a PC or another switch for trunking.

 

[quickshot89]

and or routing on a stick? (or whatever its called, neglected looking at cisco material for past month now)

 

[bigredshark]

It means whatever you plug into it will 'just work'

Whether that be a PC or another switch for trunking.

Providing the other end is configured correctly. Personally I despise these settings as they cause more trouble than their worth, if a port is a trunk port I want it to predictably stay a trunk port not randomly change depending on what it *thinks* is plugged in.

 

[oddjob62]

Providing the other end is configured correctly. Personally I despise these settings as they cause more trouble than their worth, if a port is a trunk port I want it to predictably stay a trunk port not randomly change depending on what it *thinks* is plugged in.

Yeah. In particular key connections (switch to switch, switch to router, switch to server) i like to set as much as i can to a manual setting (speed, duplex, trunking, portfast, etc)

 

[GhostlyPea]

Indeed as BRS and oddjob say, if you want to do something, do it manually. It takes out most chances of an error unless you put it there yourself

- Pea0n

 

[nathbooth]

I would manually set it to switchport mode static just to make sure it doesn't mess itslef around and do the speed and duplex to full and 100/1000 just so you know it wont negoiate to something stupid

 

[SMN]

+1 for hard set, also for security implications.