Cisco buying tips: Catalyst G and Catalyst X Switches

In Cisco land, finding the right switch without any guidance is like wandering into a wild jungle without a map. Cisco is known to have dozens and dozens of variations of the same switch in the same line of switch. For example, even though WS-C3560X-48T-L and WS-C3560G-48TS-S are both in the same Catalyst 3560 family, the X is vastly superior than the G in terms of forwarding bandwidth. And this often times make our clients confused as to what is the exactly the difference between the two. With any other manufacturer, a huge difference in forwarding bandwidth usually makes them completely different tiers of switch by one using a completely different number, and not some variations of the number.

Whatever it is that Cisco does not want to or not able to use a different number due to other products occupying the space, client should be extremely tentative when buying Cisco’s Catalyst switches. Even with just a tiny letter change, it could mean the right switch or a completely incompatible switch. Today, we’ll examine the difference in the X and G version of the 3560s.

At the basic Level, the 3560X has 160 Gbps of forwarding bandwidth while the 3560G has 32 Gbps forwarding bandwidth. This itself could easily swayed the purchasing decision. In addition, 3560G has a fixed uplinks configuration while the 3560X uses a modular uplinks that allow you to change between Gigabit to 10 Gigabit copper/fiber uplinks.

On top of these differences, the X Series in general:

1. Uses Ciscos’ universal IOS. What that means is that for example, a client incorrectly ordered a uit with IP Services feature set, to change to another feature set, you simply enter the licenses key and reboot the appliance.
2. Has stackable redundant power supply while the “G”s does not.
3. Has removable/replaceable fans.
4. Comes with USB Support to allow expanded functions such as file copies (useful for archving logs), or to boot from ROMmon using USB.
5. Has a management port.

As you can see, buying a Cisco switch can be a daunting task, and without proper knowledge, one can end up with a frustrated experience, and wasted resources. Next time, talk to a Cisco sales expert first before putting down the cash for one.