SW6, SW7, SW8 - Link Modes
These three DIP-switches congure the link mode settings. DIP-switch SW6 is valid when
Port 1 is set to “AN” or “MAN”. DIP-switches SW7 and SW8 are ignored when Port 1 is
set to “AN”. The following table details possible Link Mode DIP-switch congurations.
SW1 SW6 SW7 SW8 Result
Left
(AN)
Left Left Left
Enables Link Segment mode (LS).
Left
(AN)
Right Left Left
Enables Link Propagate mode (LP).
Right
(MAN)
Left Left Left
Enables Link Segment mode (LS).
Right
(MAN)
Right Left Left
Enables Link Propagate mode (LP).
Right
(MAN)
Left Right Left
Enables Remote Fault Detection
mode plus Link Segment mode
(RFD+LS).
Right
(MAN)
Right Right Left
Enables Remote Fault Detection
mode plus Link Propagation mode
(RFD+LP).
Right
(MAN)
Left Left Right
Enables Symmetrical Fault Detect
mode (SFD).
Right
(MAN)
Right Left Right
Illegal Setting, Link Segment (LS) is
selected.
Right
(MAN)
Left Right Right
Illegal Setting, Link Segment (LS) is
selected.
Right
(MAN)
Right Right Right
Illegal Setting, Link Segment (LS) is
selected.
Figure E: Link Modes Table
NOTE: Connecting two converters set to any of the RFD modes is illegal and will
cause a “deadly embrace” lockup.
NOTE: It is recommended to keep the LS setting (default) until initial congura-
tion is complete.
For detailed information on the operation of the different Link Modes, download the
application note “iConverter Link Modes” available on Omnitron’s web page:
http://www.omnitron-systems.com/downloads.php
SW2 and SW3 - Port 2 (UTP) Settings “AN MAN” “FDX HDX”
These DIP-switches are only valid when Port 1 is set to “MAN”. Port 2 is always set
to auto-negotiation and DIP-switches SW2 and SW3 only dene what modes are
advertised. See Figure C: Port 2 (UTP) Modes.
Switch Left
(Factory Default)
Right
SW1 P1 AN:
Port 1
Fiber Auto-Negotiation
P1 MAN:
Port 1
Fiber Manual Negotiation
SW2 P2 AN:
Port 2
UTP Auto-Negotiation
P2 MAN:
Port 2
UTP Manual
SW3 FDX:
Port 2
UTP Full-Duplex
HDX:
Port 2
UTP Half-Duplex
SW4 OFF:
Port 2
Pause Advertisement Enable
PAUSE:
Port 2
Pause Disable
SW5 OFF:
Port 2
Asymmetric Pause
Advertised
ASYM:
Port 2
Asymmetric Pause Not
Advertised
SW6 - SW8 Link Mode Table
Figure B: DIP-Switches
SW2 SW3 Port 2 (UTP) Modes of Operation
AN FDX Configured for Auto-Negotiation.
It advertises and negotiates in this order:
1000FDX, 1000HDX
AN HDX Configured for Auto-Negotiation.
It advertises and negotiates:
1000HDX
MAN FDX Configured for Forced-Negotiation.
It advertises and negotiates:
1000FDX
MAN HDX Configured for Forced-Negotiation.
It advertises and negotiates:
1000HDX
Figure C: Port 2 (UTP) Modes
SW4 and SW5 - Port 2 Pause Advertisement “OFF PAUSE” “OFF ASYM”
These DIP-switches are only valid when Port 1 is set to “MAN”. The PAUSE modes
will be based on the conguration of DIP-switches SW4 and SW5.
SW4 SW5 Port 2 (UTP) PAUSE Modes
OFF OFF No Pause advertised
OFF ASYM Asymmetric PAUSE towards link partner
PAUSE OFF Symmetric PAUSE
PAUSE ASYM Both Symmetric PAUSE and Asymmetric PAUSE
toward local device
Figure D: Pause Modes
(2 pagine)
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