The Cisco Catalyst 3560 Series does not support Cisco GigaStack technology (available on the Cisco Catalyst 3550, 2950G, and 3500 XLs) or Cisco StackWise technology (available on the Catalyst 3750 Series). However, a cluster of any combination of these platforms can be managed over a single IP address using the Cisco Network Assistant software. There are more details on Cisco Network Assistant later in this document.
The Cisco Catalyst 3560 Series consists of mainstream products for fixed configuration enterprise 10/100 and 10/100/1000 applications. The Cisco Catalyst 3750 Series is ideal when a group of interconnected switches requires higher levels of availability, redundancy, performance, and ease-of-use inherent in the Cisco StackWise technology. The Cisco Catalyst 3750 Series also has Fast Ethernet configurations that support IEEE 802.3af and Cisco prestandard PoE.
Another Major difference between 3750 and 3560 is that 3750 has support for 10GE ports on it while 3560 doesnot. 3750 has another model with builtin wirless LAN controller to manage your wireless AP's on the network.
If you use two (or more) 3750s for aggregating access switches (3550, 3560, ...)they will allow physical redundancy over an etherchannel link that has one link (or more)connected to different physical 3750s. This is because two switches stacked together look like one large switch. When a link goes down, the etherchannel continues without interruption. Plus, you're getting the benefit of both uplinks carrying traffic. If you aggregated access switches into 3560s or other non-stacking switches, you could still put one uplink into one 3560 and the other into the second 3560. However, one uplink from your access switches would need to block to avoid a bridging loop. With an uplink going down, STP would need to reconverge, taking extra time. Maybe a blend of 3750s and 3560s would be the best answer.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...