Zyxel VES-1624FT-55A [48/312] Front panel leds

Zyxel VES-1624FT-55A [48/312] Front panel leds
Chapter 3 Front Panel Connections
VES-1624FT-55A User’s Guide
48
3.1.2 Front Panel LEDs
The following table describes the LED indicators on the front panel of the IP DSLAM.
3.2 1000/100M Auto-Sensing Ethernet
The IP DSLAM has two 1000/100Mbps auto-sensing Ethernet ports. There are two factors
related to Ethernet: speed and duplex mode. In 1000/100Mbps Fast Ethernet, the speed can be
100Mbps or 1000Mbps and the duplex mode can be half duplex or full duplex. The auto-
negotiation capability makes one Ethernet port able to negotiate with a peer automatically to
obtain the connection speed and duplex mode that both ends support.
When auto-negotiation is turned on, an Ethernet port on the IP DSLAM negotiates with the
peer automatically to determine the connection speed and duplex mode. If the peer Ethernet
port does not support auto-negotiation or turns off this feature, the IP DSLAM determines the
connection speed by detecting the signal on the cable and using half duplex mode. When the
IP DSLAM’s auto-negotiation is turned off, an Ethernet port uses the pre-configured speed
and duplex mode when making a connection, thus requiring you to make sure that the settings
of the peer Ethernet port are the same in order to connect.
Use the Ethernet ports for subtending. You can daisy chain more IP DSLAM or other Ethernet
switches.
Table 2 LED Descriptions
LED COLOR STATUS DESCRIPTION
PWR Green On The power is turned on.
Off The power is off.
SYS Green Blinking The system is rebooting and performing self-diagnostic tests.
On The system is on and functioning properly.
Off The system is not ready/malfunctioning.
ALM Red On There is a hardware failure or a critical alarm, such as ALM
input.
Off The system is functioning normally.
1000/100 1,2 Yellow On The link to a 100 Mbps Ethernet network is up.
Blinking The link is transmitting/receiving 100 Mbps Ethernet traffic.
Off The link to a 100 Mbps Ethernet network is down.
Green On The link to a 1000 Mbps (1Gbps) Ethernet network is up.
Blinking The link is transmitting/receiving 1000 Mbps (1Gbps)
Ethernet traffic.
Off The link to a 1000 Mbps (1Gbps) Ethernet network is down.
SFP 1,2 LNK Green On The link to a 1000 Mbps (1 Gbps) Ethernet network is up.
Off There is not a link to a 1000 Mbps (1 Gbps) Ethernet network
or the 1000 Mbps network link is down.
SFP 1,2 ACT Green Blinking The system is transmitting/receiving Ethernet traffic.
Off The system is not transmitting/receiving Ethernet traffic.

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