Magnum 3000 Stackable Hubs Installation and User Guide (07/06)
38
www GarrettCom com
.
.
plugs into the main board and into the power supply with other assorted cables. The
exact type and number of cables and connectors for this installation varies depending
upon the vintage of the hub unit being upgraded. Kits may sometimes be available from
GCI's Spare Parts List with parts and instructions to suit the different unit revs. Consult
with GCI Tech Support for additional information.
Figure 5.3c: Embedded Agent Board
If in doubt about the vintage of your 3012 upgrade candidate, use the "AGT"
box model for the upgrade.
Step 3. Set Group # (Stack) Address - Magnum 3024/3012
On the back of Magnum 3000 Stackable hubs is an eight position DIP switch.
The first six positions are used to identify each unit in binary code as a Group # address.
Switches 7 and 8 are not used.
F
igure 5.3d, Magnum 3024 and 3012, Rear View
For managed stacks, the unit configured with the embedded SNMP agent in it
should be set to the # 1 Group address. The "AGT" agent box unit, if used in a stack, has
no Group # address itself. See also Table 4.3 and Section 2.3.2, "Group # Address
Switch Settings".
From the perspective of the network manager, the Magnum SNMP agent board
or box is not visible as a separate user or port. It cannot be disabled either accidentally or
purposefully. This prevents the agent itself from being disconnected, causing an
irreversible loss of control of the entire stack from the network manager.
Magnum SNMP
Agent Board
pwr
. . . . . . . .
. . . . . . .
1 8
