Install Guide
Model: MIL-4511H
3
D e s c r i p t i o n o f H a rdw a r e
The MIL-4511H is a 24-port, 10BASE-T SNMP managed hub with a modular
uplink port supporting 10BASE-T, 10BASE2, 10BASE-BASE-FL, or AUI
connectivity, and an RS-232 port for out-of-band management. The MIL-4511H
supports standard MIB-II, Digi's private MIB, and MIBs using the SNMP protocol
with both in-band management (over TCP/IP and IPX protocols) and out-of-band
management through an RS-232 port. Each of the 10BASE-T ports support
LinkSentry™. LinkSentry alerts the user if or when there is a link failure.
D e s c r i p t i o n o f t h e L E D s
On the front panel of the MIL-4511H, there is one LED above each of the RJ-45
ports. The LED lights in one of three colors to indicate the following:
• Green indicates
link
present
• Orange indicates that the device is receiving data
• Red indicates that the port is partitioned
Also on the front panel are three LEDs located between the Stack In/ Out ports
and the first RJ-45 port. They indicate the following:
• PWR (Power): This LED illuminates when power is applied to the device
• MBUS (Management Bus): This LED blinks when activity from the agent is in
progress (only for the MIL-4511H).
• MSYS (Management System): This LED blinks five times per second until the
agent is found. Once found, it blinks once per second (only for the 4511H).
On both sides of the second group of eight Ports on the front panel are two global
LEDs. The global RX LED lights when a port is receiving a data packet. The global
CX LED lights when a collision occurs on one of the ports.
D e s c r i p t i o n o f D i p S w i t ch e s
To the right of the DB-9 Serial Port on the rear of the hub are two Dip Switches
(labeled 1 and 2). The following table gives the function of the two Dip Switches
D1
D2
FUNCTION
Off (Up)
Off (Up)
Normal Mode (Telnet Disabled)
On (Down)
Off (Up)
Normal Mode (Telnet Enabled)
On (Down)
On (Down)
Monitor Mode, SNMP (Agent not Operational)
ON
1
2
