Extreme Networks e" series, Hardware Installation Manual

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256 Extreme Networks Consolidated "e" and "i" Series Hardware Installation Guide
BlackDiamond 6800 Series Management Switch Fabric Module
When you save the switch configuration, it is saved to all MSMs. If you download a new ExtremeWare
image, the image is downloaded to all MSMs.
Selection of the master MSM occurs automatically. The following scenarios describe the selection
process:
• When the BlackDiamond 6800 series switch boots with one or more MSMs already installed, and an
MSM module is installed in slot A, the MSM in slot A becomes the master.
• When the BlackDiamond 6800 series switch boots with a single MSM (regardless of the slot position),
it is selected as the master.
If additional MSMs are added to the switch after powered on, the added MSMs become the slaves.
MSMs that operate as slaves can be inserted and removed without disrupting network services.
• If you remove the master MSM while the BlackDiamond 6800 series switch is operating, the slave
MSM experiences a soft reset and then becomes the master MSM.
For example, if you have a BlackDiamond 6816 switch with a master MSM in slot A and slave MSMs
in slots B through D, and you remove the master MSM from slot A, the slave in slot B becomes the
master.
MSM Memory
The MSM has two 144-pin SODIMM sockets and is shipped with two 128 MB SODRAM modules
installed, as shown in Figure 149.
NOTE
The MSM supports only SODIMMs supplied by Extreme Networks.
Figure 149: MSM SODIMM sockets
EW_SODMs
50015