ProfiTap C1-1G, Руководство пользователя

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2.6 Power Failure
When the Tap is not powered, network ports A and B are
hardware wired together and monitor ports are disabled.
2.7 Fast Failover (1G)
When a power transition event occurs, the network devices
renegotiate the link. This operation can take up to 5 seconds
depending on network configuration and can cause a network
topology reconfiguration. Fast Failover feature helps to reduce
this time by trying to keep the link up without renegotiation
during the power change event.
With Fast Failover, the network's path unavailability is be-
tween 30 and 300ms.
3. Installation
1. Power both network devices,
do NOT power the TAP
Note: A powered TAP will always correct a wrong cable setup.
Connect the network using category 5e UTP cables.
a. If the two (2) network devices are of DTE and DCE type,
use two (2) straight cables.
b. If the two (2) network devices are of the same type (2*DTE
or 2*DCE) use one straight and one cross-over cable.
* The connected network devices show LINK (or Activity). If
there is no LINK, change one of the cables by an opposite
type.