Black Box LMC543C, Руководство пользователя, Страница: 19 / 30

38
Configuring for EXT MGMT
By adding a connection to the EXT MGMT port and configuring the Managed Media
Converter, you can continue the management path past the module.
To configure this mode, perform the following:
1. Set the management DIP switch ON for the ports using management (in this example it is
the OPTICS (or UPLINK) 3 = ON and EXT MGMT 1 = ON).
2. Set Transparent Mode to allow both tagged and untagged traffic to pass:
a. From the Main Configuration Screen, press the space bar and type config . The
Configuration Screen displays:
b. Enter Y in the Transparent Mode field and press any key (except S or Q) to open the
Transparent Mode Setup screen.
c. Press S or F3 to save without setting any transparent mode options. This will set all
untagged traffic as management (
Is a VLAN tag required on Management
packets? [ N ]
)
.
d. Type reboot .
TRANSPARENT MODE SETUP
Is a VLAN tag required on Management packets? [ N ]
Do you want to enter the Extra Tag mode? Enter Y for Extra Tagging.
Enter N if you do not want Extra Tags [ N ]
Are VLAN Tags required on the EXT Port? [ N ]
Type S or F3 to save the new information
Type Q of F4 to quit and cancel changes
Reboot is required for any change to take affect.
Transparent Mode – with either (not both) Data and Optics Mgmt dipswitches
set to on, all traffic passes between Optics and Data port EXCEPT what has
been defined as the Management Domain. The Management Domain can either be
defined as untagged traffic or traffic with a specified VLAN ID.
In Transparent Mode with BOTH Optics and Data Mgmt dipswitches set to off,
all traffic passes between the Optics and Data Ports.
Default Mode – the unit passes only Untagged Packets.
The unit is currently
in Default Mode .
Enter Y for Transparent Mode, N for no Transparent Mode or <enter> to
move to other options [ Y ]
15
When FiberAlert is enabled on the remote module (preferred use), a fault on the receive side
of the OPTICS (or UPLINK) port causes the transmitter side to turn off. This allows the fiber
connected device to detect a fault in its transmission fiber.
FiberAlert
Single fiber fault with FiberAlert enabled on remote
X
X
X
X
X
X
CONNECTED
DEVICE
CONNECTED
DEVICE
HOST REMOTE
WARNING
Do not enable FiberAlert on both modules when using Managed Media Converter in
pairs. This will cause them to lock up when a fault occurs on the fiber. Only enable
FiberAlert on the remote module.
Using LinkLoss and FiberAlert
In a typical central site to remote site media conversion, it is recommended that you enable
the LinkLoss and FiberAlert features as indicated in the table.
FiberAlert and LinkLoss
Feature Enabled Fault Location Port affected
FiberAlert Remote Side Only Fiber Fiber
TX LinkLoss Remote Side (or both) Twisted Pair Fiber
FX LinkLoss Host Side (or both) Fiber Twisted Pair