User Guide
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C PIN-OUTS Console Cable 189 Null Modem Cable 190 PC-AT Serial Cable 190 Modem Cable 190 Ethernet Port RJ-45 Pin Assignments 191 D TROUBLESHOOTING Problem Management 192 Troubleshooting Solutions 192 E 3COM CLI REFERENCE GUIDE Getting Started with the Command Line Interface 195 CLI Commands 196 F GLOSSARY ...206 G OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS Register Your Product to Gain Service Benefits 212 Solve Problems Online 212 Purchase Extended Warranty and Professional Services 212 Access Software Downloads 213 Contact Us 213 REGULATORY NOTICES
C PIN-OUTS Console Cable 189 Null Modem Cable 190 PC-AT Serial Cable 190 Modem Cable 190 Ethernet Port RJ-45 Pin Assignments 191 D TROUBLESHOOTING Problem Management 192 Troubleshooting Solutions 192 E 3COM CLI REFERENCE GUIDE Getting Started with the Command Line Interface 195 CLI Commands 196 F GLOSSARY ...206 G OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS Register Your Product to Gain Service Benefits 212 Solve Problems Online 212 Purchase Extended Warranty and Professional Services 212 Access Software Downloads 213 Contact Us 213 REGULATORY NOTICES
User Guide
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...receiving, but not sending pause frames. The Switch 2916 and 2924 ports are supported. The Switch 2916 and 2924 includes the following models: ■ Baseline Switch 2916-SFP Plus 16-Port ■ Baseline Switch 2924-SFP Plus 24-Port The Switch 2916 and 2924 feature the following advantages: ■ Full.... 12 CHAPTER 1: GETTING STARTED About the Switch 2916 and 2924 The Switch 2916 and Switch 2924 are used, Auto MDIX is not supported. In full duplex operation all ports. If fiber SFP transceivers are Gigabit Ethernet switching products that deliver flexible three-speed performance (...
...receiving, but not sending pause frames. The Switch 2916 and 2924 ports are supported. The Switch 2916 and 2924 includes the following models: ■ Baseline Switch 2916-SFP Plus 16-Port ■ Baseline Switch 2924-SFP Plus 24-Port The Switch 2916 and 2924 feature the following advantages: ■ Full.... 12 CHAPTER 1: GETTING STARTED About the Switch 2916 and 2924 The Switch 2916 and Switch 2924 are used, Auto MDIX is not supported. In full duplex operation all ports. If fiber SFP transceivers are Gigabit Ethernet switching products that deliver flexible three-speed performance (...
User Guide
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... and 2924 Ethernet, Fast Ethernet, Auto-negotiating 10/100/1000BASE-T ports and Gigabit Ethernet Ports SFP Ethernet Ports Supports fiber Gigabit Ethernet long-wave (LX), and fiber Gigabit Ethernet short-wave (SX) transceivers in any combination. Mounting 19-inch rack or standalone mounting Front Panel Detail Figure 1 shows the front panel of the Switch 2924-SFP Plus 24-Port unit. Figure 2 Switch 2924 SFP...
... and 2924 Ethernet, Fast Ethernet, Auto-negotiating 10/100/1000BASE-T ports and Gigabit Ethernet Ports SFP Ethernet Ports Supports fiber Gigabit Ethernet long-wave (LX), and fiber Gigabit Ethernet short-wave (SX) transceivers in any combination. Mounting 19-inch rack or standalone mounting Front Panel Detail Figure 1 shows the front panel of the Switch 2924-SFP Plus 24-Port unit. Figure 2 Switch 2924 SFP...
User Guide
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...16-Port and 24-Port Ethernet switches provide LED indicators on the LEDs of 1000 Mbps; The SFP module is not inserted or is sending or receiving data. The port works at the rate of the LEDs. The port works at the rate of the Switch 2916 and 2924 LED Power Label Power 10.../100/1000 BASE-T Ethernet port status Link/ Activity Duplex mode Duplex 1000Base SFP SFP port status Module Active Status Green Yellow OFF Green Yellow OFF Yellow OFF Green OFF Description...
...16-Port and 24-Port Ethernet switches provide LED indicators on the LEDs of 1000 Mbps; The SFP module is not inserted or is sending or receiving data. The port works at the rate of the LEDs. The port works at the rate of the Switch 2916 and 2924 LED Power Label Power 10.../100/1000 BASE-T Ethernet port status Link/ Activity Duplex mode Duplex 1000Base SFP SFP port status Module Active Status Green Yellow OFF Green Yellow OFF Yellow OFF Green OFF Description...
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... Table 3 contains the system specifications of the Switch 2916 and 2924 series switches Specification Physical dimensions (H×W×D) Weight Console port Gigabit Ethernet ports on the front panel AC Input voltage Power consumption (full load) Operating temperature Relative humidity Switch 2916-SFP Plus 16-Port 3CBLSG16 Switch 2924-SFP Plus 24-Port 3CBLSG24 44×440×173 mm (1.73...
... Table 3 contains the system specifications of the Switch 2916 and 2924 series switches Specification Physical dimensions (H×W×D) Weight Console port Gigabit Ethernet ports on the front panel AC Input voltage Power consumption (full load) Operating temperature Relative humidity Switch 2916-SFP Plus 16-Port 3CBLSG16 Switch 2924-SFP Plus 24-Port 3CBLSG24 44×440×173 mm (1.73...
User Guide
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...to operate the web interface correctly, JavaScript and Cascading Style Sheets must be enabled on page 17. ■ Ensure that the switch is connected to enable them if you can set up web interface management over the network. Prerequisites ■ Ensure you have changed...and non-secure (HTTP) connections. You will only need to the network using a Category 5 twisted pair Ethernet cable with IP information as described in "Methods of Managing a Switch" on your browser settings. Setting Up Web Interface Management 25 Setting Up Web Interface Management This section describes...
...to operate the web interface correctly, JavaScript and Cascading Style Sheets must be enabled on page 17. ■ Ensure that the switch is connected to enable them if you can set up web interface management over the network. Prerequisites ■ Ensure you have changed...and non-secure (HTTP) connections. You will only need to the network using a Category 5 twisted pair Ethernet cable with IP information as described in "Methods of Managing a Switch" on your browser settings. Setting Up Web Interface Management 25 Setting Up Web Interface Management This section describes...
User Guide
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... AND FEATURES Related Standards The 3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus have been designed to +158 °F) Humidity 0-95% (non-condensing) Standard EN 60068 (IEC 68) Physical Width Depth Height Weight Switch 2916-SFP Plus Switch 2924-SFP Plus Mounting 440 mm (17....3 in.) 173 mm cm (6.81 in.) 44 mm (1.73 in.) or 1U. 2.5 kg (5.5 lb) 2.6 kg (5.7 lb) Free-standing, or 19 in. Storage Temperature -40 to +70 °C (-40 to the following standards: Function 8802-3, IEEE 802.3 (Ethernet...
... AND FEATURES Related Standards The 3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus have been designed to +158 °F) Humidity 0-95% (non-condensing) Standard EN 60068 (IEC 68) Physical Width Depth Height Weight Switch 2916-SFP Plus Switch 2924-SFP Plus Mounting 440 mm (17....3 in.) 173 mm cm (6.81 in.) 44 mm (1.73 in.) or 1U. 2.5 kg (5.5 lb) 2.6 kg (5.7 lb) Free-standing, or 19 in. Storage Temperature -40 to +70 °C (-40 to the following standards: Function 8802-3, IEEE 802.3 (Ethernet...
User Guide
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...Remove and reinstall the device. Self-test exceeds 15 seconds The device may already be open. Be sure the switch has a valid IP address, subnet mask and default gateway configured Check that your technical support representative. Software settings ...switch management using Console connection Be sure the terminal emulator program is set Configure the network address in the workstation Wrong or missing protocol Configure the workstation with a valid link light, and that the port has not been disabled Ensure that your cable is properly connected with IP protocol Faulty ethernet...
...Remove and reinstall the device. Self-test exceeds 15 seconds The device may already be open. Be sure the switch has a valid IP address, subnet mask and default gateway configured Check that your technical support representative. Software settings ...switch management using Console connection Be sure the terminal emulator program is set Configure the network address in the workstation Wrong or missing protocol Configure the workstation with a valid link light, and that the port has not been disabled Ensure that your cable is properly connected with IP protocol Faulty ethernet...
User Guide
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...D: TROUBLESHOOTING Table 12 Troubleshooting Solutions (continued) Problems Possible Cause Device is in the NMS application, and change setting if necessary Contact 3Com Check Rx and Tx on fiber optic cable Bad cable Replace with a tested cable Wrong cable type Verify that all 10 Mbps ...use a Cat 5 cable Lost Password Check the port LED or zoom screen in a reboot loop Software fault No connection and the port Incorrect ethernet cable, LED is off e.g., crossed rather than straight cable, or vice versa, split pair (incorrect twisting of pairs) Solution Download and install...
...D: TROUBLESHOOTING Table 12 Troubleshooting Solutions (continued) Problems Possible Cause Device is in the NMS application, and change setting if necessary Contact 3Com Check Rx and Tx on fiber optic cable Bad cable Replace with a tested cable Wrong cable type Verify that all 10 Mbps ...use a Cat 5 cable Lost Password Check the port LED or zoom screen in a reboot loop Software fault No connection and the port Incorrect ethernet cable, LED is off e.g., crossed rather than straight cable, or vice versa, split pair (incorrect twisting of pairs) Solution Download and install...
User Guide
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...Multiple Spanning Tree Protocol (MSTP) which carry VLAN information. that is, the device that is plugged into the switch. IEEE 802.1Q VLAN Tagging-Defines Ethernet frame tags which provides independent spanning trees for verification. The elected querier is implemented as the querier - A ...user name and password is requested by the switch, and then passed to register end stations with the lowest IP address in Ethernet networks. Generic Multicast GMRP allows network devices to an authentication server (e.g., RADIUS) for VLAN ...
...Multiple Spanning Tree Protocol (MSTP) which carry VLAN information. that is, the device that is plugged into the switch. IEEE 802.1Q VLAN Tagging-Defines Ethernet frame tags which provides independent spanning trees for verification. The elected querier is implemented as the querier - A ...user name and password is requested by the switch, and then passed to register end stations with the lowest IP address in Ethernet networks. Generic Multicast GMRP allows network devices to an authentication server (e.g., RADIUS) for VLAN ...