Cisco 2960XR – Basics

I was recently on a project to update our existing core Cisco 6509 switches and find some new improvements to the Cisco 6509 chassis. The switches that were being upgraded were simply performing simple switching duties, filled in Slot 1 with Sup II’s and mainly dispersed around the 10/100/1000 switching board. Learn more about WS-C3750X-48U-E.

The plan was to upgrade these switches to the Sup 720’s and add 10/100/1000 blades a couple more. My initial thoughts were that the fan tray and most likely the power supplies would need to be upgraded too. A pair of 2500W power supplies provided the current capacity, and due to the increased power demand for a fully charged chassis and the newer supervisor card we will most likely need larger power supplies.

I had new power supplies priced and found that the 4000W or 6000W supply was around the same price for both. Since 6000w was about the same as the lets 4000W gain the greater capacity! But the current chassis wouldn’t take the 6000W power to my surprise. For these big boys, we needed the 6509-E chassis.

Its Cisco 6509-E

It seems that the Cisco elves have been hard at work to keep up with the demand for power over Ethernet (PoE) for their VoIP line, as well as the many other power demands placed on it by the Cisco ACE load balancing system, FWSM, IDS, etc. So, the 6509-E came out.

Well needless to say I wasn’t too happy I needed to upgrade the whole chassis. Fortunately I found out after all I ‘d need to upgrade the power. The chassis designed for the 2500W power only with switches modules and one sup720 adequate even if one were to die, it would be done by the remaining 2500W power supply.

NOTE: I found out while researching this article that Cisco made even more changes to the 6509 line and introduced the 6509-V-E Chassis. This is a chassis conforming to the vertical NEBs, similar to the 7600 chassis. It offers features to enable network bandwidth capability of up to 1440 Gbps (80 Gbps per slot) and improved cable management capabilities. It also provides front-to-back airflow in co-located data center deployments which is optimized for hot and cold aisle designs.