HP J4900B User Manual

1-6
Introducing the Switch
Front of the Switch
Introducing the Switch
Port LEDs
The port LEDs provide information about the individual switch ports.
Table 1-2. Port LEDs
Switch LEDs State Meaning
Switch 2626 and Switch 2650
Port LEDs
(green – over-
laid with the
port number)
Displays port link information, network activity information, whether the port is
configured for full-duplex operation, or the speed of the connection depending on the
Port LED View selected. See “Port LED View Select Button and Indicator LEDs” on the
next page for more information.
Series 2600-PWR Switches
Link
(green - over-
laid with the
port number or
embedded
with the
connector)
On Indicates the port is enabled and receiving a link beat signal (for the
twisted-pair ports), of a strong enough light level (for the fiber-optic ports)
from the connected device.
Off
Blinking
1
One of these condition exists:
• no active network cable is connected to the port
• the port is not receiving link beat or sufficient light
• the port has been disabled through the switch console, the web browser
interface, ProCurve Manager, or other network management tool.
The port has failed self test. The switch Fault, and Self Test LEDs will flash
simultaneously.
Mode Depending on the mode selected, displays the following: network activity information,
whether the port is configured for Full Duplex operation, maximum speed operation, or
whether network errors are occurring on the port. See “LED Mode Select Button and
Indicator LEDs:” below for more information.
All Series 2600 Switches
2
T/M
(green)
On For the dual-personality ports, indicates the enabled port:
• if the “T” is on, the 10/100/1000Base-T RJ-45 port is enabled.
• if the “M” is on, the mini-GBIC port is enabled.
1
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
2
For the 2600-8-PWR device, both connectors of the dual-personality port have Link and Mode LEDs. To
clearly indicate that the mini-GBIC/SFP port has taken control of port 9, when a mini-GBIC/SFP is fully
inserted into the garage, the Link LED will blink with a slow blink rate on the 9M port to indicate a status
change.

HP J4900B Specifications

General

Brand	HP
Model	J4900B
Category	Switch
Language	English