How to trunk 3750 and 2960 switch from two floors via Etherchannel

[kkwaskcisco]

I have two 3750x switches stacked together on floor #1, and I need to add a brand new 2960 switch on floor #2, can I do Etherchannel among them to provide redundancy for floor #2 via patch panel.  I am thinking to install a patch panel on floor #2 and provide a trunk cable between 2 floors.  Then using two ports on floor#2 switch to create a Etherchannel and link them to my 3750 switch on floor #1.  

scenario will be this...

where === means two cat6 cable, ---- means one cat 6 cable.

2960 ==> patch panel on floor 2 (two cat6 from 2960 to p/p)

(two trunk cable from p/p#2  to p/p#1 on floor 1)

patch panel floor 2====patch panel floor 1

(one patch cord to master switch, one patch cord to member)

patch panel floor 1 --- 3750 Master switch

patch panel floor 1 ---- 3750 member switch

[Jose Solano · Accepted solution]

Hi,

I do not see any limitation on your set up, as long as you match the configuraion, duplex and speed on the 3750 stack and the 2960 this should work just fine. Somtehing like the below config can work:

3750

interface Port-channel1
 switchport trunk encapsulation dot1q
 switchport mode trunk
end

interface GigabitEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 1 mode on
!
interface GigabitEthernet1/0/2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 1 mode on

 2960
 
interface Port-channel2
 switchport trunk encapsulation dot1q
 switchport mode trunk
end
 
 interface GigabitEthernet1/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 2 mode on
!
interface GigabitEthernet1/2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 2 mode on

Hope this helps

[kkwaskcisco]

thanks!

If I am not using 2960 Catalyst switch, but using Cisco small business switch like model SG200-26FP.  If this configuration work?

[Jose Solano]

Hi,

I'm not really familliar with small business switches however, I understand that they support LACP therefore I would say that it will work but using LACP instead of mode on.

Regards,