When I was looking for Cisco 6500 series chassis, I saw that there are horizontal(6509E) and vertical chassis(6509VE).

Although 6509VE has same(or almost same) chassis height as 6513E, but 6509VE only can hold 9 modules, which is same as 6509E.

So, is there any advantage or reason with vertical chassis switch in spite of bigger than horizontal one?


The big driver for the 6509-V-E is that it is a front to back air flow, rather than the side to side airflow of the 6509-E. This is a very important feature in some data centers to maintain proper cooling.

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