Tahoe 289, User Manual

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Tahoe 289 E3/T3/Ethernet Bridge
Loopback
Enables serial loop back (for testing purposes). The following modes are available:

Local local loop back

Remote (line) remote loop back (not using framer)

Remote (frame) remote loop back (using framer)
This setting is not saved.
Ethernet settings
Ethernet interface settings.
Ethernet mode
Selects the speed and duplex mode of the Ethernet interface. Available modes are:

Auto use auto-negotiation, recommended setting

10BaseT-HD force 10Mbps, half-duplex

10BaseT-FD force 10Mbps, full-duplex

100BaseT-HD force 100Mbps, half-duplex

100BaseT-FD force 100Mbps. full-duplex
The auto mode is the recommended setting, but forced modes are also available. When selecting a
forced Ethernet mode, make sure the link partner has the same mode selected as duplex cannot be
detected in such circumstances.
Flow control
Select a flow control to be used on the Ethernet interface, as follows:

Auto flow-control, depends on advertised link partner abilities (recom-
mended setting)

Enabled force flow control

Disabled don’t use flow control
The recommended setting is Auto. When flow-control is enabled and Ethernet is in full-duplex
mode, the device will send and accept pause frames to prevent network congestion.
Receive queue
Changes the size of the Ethernet receive queue in 64kB (32 frames) steps. May be used to adjust
latency in a heavily-loaded network.