2.4. Power supply

The GTap is equipped with a power supply (or two redundant power supplies if the second one is purchased).

The presence of power is indicated by the <POWER 1> and <POWER 2> LEDs.

In the event of a power supply failure (one of the two LEDs is off), contact the Gatewatcher support.

In the event of a total power failure, the GTap activates its bypass circuits and connects the `Network A` and `Network B` ports together. The `Monitor` ports are disabled when the Tap is not powered.

Note

The second power supply is optional when ordering the GTap.

Individual power supplies can still be purchased after placing an order.

If necessary, contact the Gatewatcher support or your usual Gatewatcher contact.

---

2.4.1. Fast Failover

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.

The 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 path unavailability lasts between 30 and 300 ms.

---