52 Brocade MLX Series and Brocade NetIron XMR Hardware Installation Guide
53-1002373-02
Router modules
1
After a power supply is removed from a router, the software determines if there is enough power to
operate all of the interface modules. If there is not enough power, some interface modules will be
powered off.
If you want to perform a hitless upgrade, replace one power supply unit at a time, and make sure
the device has at least +1 redundancy at all times.
Power supplies are hot-swappable, which means they can be removed and replaced while the
router is powered on and running. However, Brocade recommends that you disconnect a power
supply from the power source before removing and replacing the supply. The 4-, 8-, and 16-slot
router can be running while a power supply is being removed and replaced, but the power supply
itself should not be connected to a power source. Otherwise, you could be injured, or the power
supply or other parts of the router could be damaged. (In the 32-slot router, you cannot unlatch
and remove a power supply without first releasing the cord retainer and removing the power
cord.)
Rack mounting brackets
All routers ship with pre-installed mounting brackets that allow you to front-mount the router in a
standard 19-inch (EIA310-D) rack. For instructions about how to mount the router in a rack, refer to
the installation chapter that is appropriate for your router model.
You can also mid-mount your 4-, 8- or 16-slot router in a rack using the brackets that ship with the
router. You simply remove the brackets from the front of the router and mount them midway along
the sides of the router. For more information, see the installation chapter appropriated for your
router model.
Brocade MLXe routers can also be mounted in a cabinet or 4-post rack using optional rack mount
kits available from Brocade. For information about how to install your Brocade MLXe router in a
cabinet or 4-post rack, refer to “Cabinet or 4-Post Rack Mount Kit contents” on page 100.
Cooling system for Brocade MLXe routers
The cooling systems for Brocade MLXe routers contain the following components:
• 4-slot router: Equipped with one fan assembly that contains two 4-speed fans and two fan
controllers to support redundancy.
• 8-slot router: Equipped with one fan assembly containing four 4-speed fans and four fan
controllers to support redundancy.
• 16-slot router: Equipped with two high-speed fan assemblies. Each fan assembly contains two
4-speed fans with four fan controllers to support redundancy. High-speed fans are identified in
the show chassis command output in the following manner:
Rev A Back Fan A-1: Status = OK, Speed = LOW (50%)
Rev A Back Fan A-2: Status = OK, Speed = LOW (50%)
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