Product Details
Product Description
Product Description
Focus on DCS, PLC, robot control system and large servo system.
Main products: various modules / cards, controllers, touch screens, servo drivers.
Advantages: supply of imported original products, professional production parts,
Fast delivery, accurate delivery time,
The main brands include ABB Bailey, Ge / fuanc, Foxboro, Invensys Triconex, Bently, A-B Rockwell, Emerson, ovation, Motorola, xyvom, Honeywell, Rexroth, KUKA, Ni, Deif, Yokogawa, Woodward, Ryan, Schneider, Yaskawa, Moog, prosoft and other brands
Using the Password Reset Button If you forget the A4 login password, use the password reset button to reset the password to the default value as described in the following procedure. To reset the A4 password: 1. Locate the password reset button on the front of the switch as shown in Figure 3‐1 on page 3‐2. 2. Press‐and‐hold the password reset button while the switch is operational. This changes the login password to the default password and will be indicated by means of the command line interface (CLI) only. 3. You can now logon to the switch using the default password via the Console port and assign a new password using the CLI. 4. To access switch management from your local PC, terminal, or modem connection, refer to the Enterasys A4 CLI Reference for instructions on how to log in and enter a new password. If you require assistance, contact Enterasys Networks using one of the methods described in “Getting Help” on page xvii. Removing the Switch from a Rack To remove the A4 switch from a rack: 1. While supporting the switch so it does not fall, carefully remove the mounting screws from the two brackets that attach the switch to the rack. 2. If necessary, remove each bracket from the switch by removing the mounting kit screws as shown in Figure 2‐2 on page 2‐4. Note: Notify the system manager before changing the password. Note: If the admin user account is locked out (typically because someone entered the wrong password multiple times), resetting the admin password with the password reset button will not unlock the admin user account. In order to unlock the admin user account, you can wait for the configured lockout time to expire or you can power cycle the switch to reboot it. Removing the Switch from a Rack 3-8 Troubleshooting Enterasys A4 Fast Ethernet Switch Hardware Installation Guide A-1 A Specifications This appendix provides the following information: Enterasys Networks reserves the right to change specifications at any time without notice. Switch Specifications Table A‐1 provides the I/O ports, processors and memory, physical, and environmental specifications for the A4 models. For information about... Refer to page... Switch Specifications A-1 Fixed MT-RJ Port Specifications A-3 Redundant Power Supply Specifications A-3 Torque Values A-5 Pluggable Transceiver Specifications A-5 Console Port Pinout Assignments A-5 Regulatory Compliance A-5 Table A-1 A4 Switch Specifications Item Specification A4H124-24FX Ports MT-RJ ports 1 through 24 Twenty-four 100Base-FX compliant ports with auto-sensing and auto-negotiation via MT-RJ connectors. Stacking or uplink ports 25 and 26 Two 10/100/1000BASE-T compliant ports via RJ45 connectors. Gigabit Ethernet SFP ports 27 and 28 Two ports that support optional pluggable transceiver 100BASE-FX, 1000BASE-SX, 1000BASE-LX fiber-optic, and 1000BASE-T copper connections. A4H254-8F8T Ports RJ45 ports labeled odd numbers 1 – 15 Eight 10BASE-T/100BASE-TX compliant ports with auto-sensing and auto-negotiation via RJ45 connectors. MT-RJ ports labeled even numbers 2 – 16 Eight 100Base-FX compliant ports with auto-sensing and auto-negotiation via MT-RJ connectors. Stacking or uplink ports 25 and 26 Two 10/100/1000BASE-T compliant ports via RJ45 connectors.
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