4
Remote Management
The Host (CO) iMcV-VDSL module can manage the connected Remote (CPE) iMcV-
VDSL module. This allows you to monitor, and configure the Remote (CPE) iMcV-
VDSL module from the Host over the VDSL connection.
DATA port features
The 10/100BaseT DATA port on the iMcV-VDSL auto-negotiates for speed and
duplex mode. These modules also provide the option of manually setting the speed
and duplex mode if the connected devices do not have the ability to auto-negotiate,
or when Auto-Negotiation is not desired.
Auto-Negotiation
The iMcV-VDSL ships from the factory with Auto-Negotiation enabled on the DATA
port. In this mode, the DATA port negotiates for speed and duplex (i.e. the module
detects 10 Mbps Full-Duplex, 10 Mbps Half-Duplex, 100 Mbps Full-Duplex or 100
Mbps Half-Duplex with Flow Control). Configure Auto-Negotiation on an iMcV-
VDSL by adjusting the DIP Switch 1 (for unmanaged modules) or via the
management software (for managed modules).
Selective Advertising
Selective Advertising (DIP switch 4), when used in combination with Auto-
Negotiation, advertises only the configured speed and duplex mode for the DATA
port. If Selective Advertising and Auto-Negotiation are both switched ON, the DATA
port’s speed (10 or 100 Mbps) and Duplex mode (FDX or HDX) are selectively
advertised individually per switch setting 5 and 6.
NOTE
If you require a specific speed and/or duplex mode, IMC Networks recommends
using Selective Advertising rather than Force Mode when connecting the modules
to devices that can ONLY auto-negotiate. Selective Advertising is NOT an option
when you disable Auto-Negotiation.
5
Forcing Duplex Mode
You can manually configure the DATA port on the iMcV-VDSL module for Half- or
Full-Duplex operation. Before manually setting the duplex mode, disable Auto-
Negotiation (Set DIP Switch 1 to OFF).
•
Full-Duplex for the DATA port is configured by setting DIP Switch 6 to the ON
position (default).
•
Half-Duplex for the DATA port is configured by setting DIP Switch 6 to the OFF
position.
Forcing the Data Port Speed
You can manually configure the DATA port on iMcV-VDSL module for 10 Mbps or
100 Mbps operation. Before manually setting the speed, disable Auto-Negotiation
(Set DIP Switch 1 to the OFF position.)
•
10 Mbps for the DATA port is configured by setting DIP Switch 5 to the OFF
position (default).
•
Configure the DATA port for 100 Mbps operation by setting DIP Switch 5 to the
ON position.
Flow Control
Flow Control is used as back pressure on the 10/100BaseT DATA interface to avoid
dropping packets during VDSL link congestion. Full-Duplex Flow Control will be
advertised only when the module is set to Full-Duplex Mode. For Full-Duplex Flow
Control to operate, the link partner (connected devices) must also support Flow
Control. Half-Duplex Flow Control does not advertise but provides a hardware based
backpressure on the Ethernet line to limit traffic.
Flow control should be considered whenever the VDSL line provides less bandwidth
than the DATA port is configured to.
Configure the DATA port on iMcV-VDSL module for Flow Control by setting DIP
Switch 3 to the ON position.
