Check The Leds - Cisco PIX-515E Quick Start Manual

Connect the inside, outside, or perimeter network cables to the interface ports. Starting from
Step 3
the top left, the connectors are Ethernet 2, Ethernet 3, Ethernet 4, and Ethernet 5. The
maximum number of allowed interfaces is six with an unrestricted license.
Do not add a single-port circuit board in the extra slot below the four-port circuit board
Note
because the maximum number of allowed interfaces is six.
Power on the unit from the switch at the rear to start the PIX 515E. Do not power on the
Step 4
failover units until the active unit is configured.

Check the LEDs

POWER ACT NETWORK
Table 1 PIX 515E Front Panel LEDs
LED Color
POWER Green
ACT Green
NETWORK Green
34
State Description
On On when the unit has power.
On On when the unit is the active failover unit. If failover is present,
the light is on when the unit is the active unit.
Off Off when the unit is in standby mode. If failover is not enabled, this
light is off.
Flashing On when at least one network interface is passing traffic.