Lowering a Cabletron MMAC+ to make room for a Cisco 5509 router.
May 7th, 2002

Step One: Replace 1 meter gray fiber jumper with a 2 meter orange fiber jumper.

Step Two: Insert 1/8" x 3/4" steel bars through the cooling slots.  One near the cable rack to stop the unit from falling forward out of the rack, the other slightly rear of center to provide a lift point.  Slip a chain through the lifting bar.  Attach a come-along from the chain to the top of the rack.

Step Three: Take up the slack, taking the weight of the unit on the come-along.  Helper removes the screws holding the unit in the rack.  Pull the handle and thumb the catch to allow the unit to be slowly and gently lowered.

Step Four: Slowly lower the unit to it new position, helper watches that cables slide down and back as the unit lowers.

Done! The Cabletron MMAC+ has been lowered to allow the mounting of a Cisco 5509 and Cisco 2509 for the LAN upgrade.  As you can see, the cables and patch panels from the Cabletron have been un-mounted from the rack and swung forward to make room for the Cisco 2924 Switches, which are already mounted.

Once the router and new T-carriers are in and connected to the switches we will have two separate LANs co-existing.  Workstations may be cut-over one or a few at a time.  Once all the workstations have been cut-over then the Cabletron may be powered down and removed.

The new Ciscos are in and powered up and connected to their multiple DS1 circuits.