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MetMc

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Cisco 3560 connecting to Dell switches

I'm in the learning phase of switching, so please bear with me.  Also I am working with equipment that has no documentation as far as what exactly is plugged into which port and quite a bit of it is not in the line of sight.  With that said, here is the situation:  We have a server rack with multiple servers connected to a switch on top of the rack and situated in one room.  There is a connection between that switch (Cisco SGE 2000) and a switch (Cisco 3560) in another room about 20 feet away, where the network rack is located.  From the 3560 there are connections to 3 other switches, Dell 5448, 5324 and 2724.  As I am learning and noticing things I am trying to correct mistakes that were made.  The connection between the SGE 2000 and the 3560 appears to be fine, although the 3560 port is only Fast Ethernet.  Both Gig ports on that switch are in use so I cannot connect to one there.  First question is, would it be best to move that connection to a combo port on one of the Dell switches so that the connection would be Gigabit?  I do have a GBIC that I can use for this.  Next question is about the connections that go from the 3560 to the Dell switches.  They are trunked from the 3560 side but I don't know on the Dell side.  How is trunking set up on Dell switches?  Also, do these connections require a crossover cable?  They are currently connected with a crossover.  I am required at this time to make do with the equipment that I have, so please no suggestions about replacing the Dell equipment because of bias against Dell (thought I should mention that because I have seen it before).  I appreciate all comments and suggestions, thanks in advance.
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Stargun

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Everyhing is working as is at this time, but of course that doesn't necessarily mean it's correctly configured.  We went through a period of instability earlier this year with some loops in the network but those have been worked out.  The point right now is to get everything optimized.

There are a couple of vlans set up, but again I'm in a learning phase and that's one of the things I need to learn.

The trunk mode is dot 1q on the 3560.

The usage...are you asking for a specific figure of traffic?  I would have to look that up.  I can easily say that one link gets the most traffic of any in the building considering it connects to our domain controller as well as all of the application servers.
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I did the sh vlan brief command.  This is a 24 port 3560 and ports 4, 6-18, 20-22 are all on the default vlan 1.  Port 24 is on vlan 5.  The remaining ports are trunked.

The switchport mode for all ports that are trunked is "switchport mode trunk".  I take it you were wanting to see if they said "access" instead?

Could you tell me which command to enter to find out the data usage?

Thanks for the help.
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I got "txload 23/255, rxload 24/255".  Pretty low.
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