We have 4 switches WS-C3750G-48TS (PowerPC405) with IOS (C3750-IPBASE-M), Version 12.2(35)SE5, configured in a stack.
Now we need these switches to support BGP4 and WCCP v2.
Can I upgrade only two switches to EMI IOS and leave another two switches to SMI IOS?
Is very expensive to upgrade from SMI to EMI.
Can I buy two more switches 24 ports (WS-C3750G -24TS-E1U) with EMI IOS and put all 6 switches on a single stack?