If a second MSM is added to the switch after it has been powered up, the added MSM becomes the
backup MSM. MSMs that operate as backup MSMs can be inserted and removed without disrupting
network services.
•
If you remove the primary MSM while the switch is operating, the backup MSM performs a soft reset
and then becomes the primary MSM.
For example, in a BlackDiamond 8810 switch with a primary MSM in slot 5 and a backup MSM in slot
6, if you remove the primary MSM from slot 5, the backup MSM in slot 6 becomes the primary MSM.
MSM Physical Features
The BlackDiamond 8000 Series MSMs have the following features on the front panel:
•
Console port—DB-9 serial port used to connect a terminal and perform local management.
•
Management port—A 10/100 Mbps Ethernet management port used to connect an Ethernet cable
directly from your laptop to the switch to view and locally manage the switch configurations. This
port can also be used to connect the system into a parallel management network for administration.
•
A button—Allows you to select the alternate BootROM image when you power on the module. To
use the alternate BootROM image, you must hold the A button while pressing the R button
simultaneously.
•
D button—Allows you to force a system dump that dumps the debug information into NVRAM. This
information is available on the next reboot. No core file is created.
•
R button—Allows you to reset the MSM without removing the module from the chassis.
•
Compact flash slot.
Different MSM models have different memory and processing capacity. For details of feature support in
the MSMs, see the
ExtremeXOS User Guide
.
8500-MSM24: Physical Features
Figure 5: 8500-MSM24
1 = Slot for port option card
5 = MGMT port
2 = Module status LEDs
6 = A button
3 = Console port
7 = D button
4 = Compact flash
8 = R button
BlackDiamond 8000 Series Modules
BlackDiamond 8800 Hardware Install Guide
18
