Cisco 3750 and 3850 compatibilty

[csco11786141]

we have a med business which contains stacked 3750 switches and for an extension we purchase 3850 switches.

i already knew the difference between them in the stack cables [data and power] but for the data stack cable it's totally different even the interface itself.

so is there any solution to stack the new 3850 switches to our existed 3750 switches network
 

[Jon Marshall]

You cannot stack the 3850s with the existing 3750s as it is incompatible hardware.

You can obviously have two different stacks and connect those to each other with etherchannel.

Jon

[csco11786141]

which means that i can easily install the new 3850 and connect a patch cord between the 2 switches from any ether port and configure this port to be trunk , is that right.

[Jon Marshall]

Not sure what you mean by cable between the two switches.

I thought you had a stack of 3750s and a stack of 3850s  ?

But yes in answer to your general question each set of switches would be stacked using the stack cables and then you can use any ports to interconnect the switches.

I would use an etherchannel spread across the switches in each stack and this can be a trunk to pass multiple vlans.

Jon

[Leo Laohoo]

which means that i can easily install the new 3850 and connect a patch cord between the 2 switches from any ether port and configure this port to be trunk , is that right.

The only way is to connect the stack of 3750 to 3850 via Ethernet cable.