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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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...mirroring Summary of receiving, but not sending pause frames. 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 Gigabit speed access ...SFP transceivers are Gigabit Ethernet switching products that deliver flexible three-speed performance (10/100/1000) and advanced voice-optimized features such as auto-QoS and auto-voice VLAN. 12 CHAPTER 1: GETTING STARTED About the Switch 2916 and 2924 The Switch 2916 and Switch 2924...
...mirroring Summary of receiving, but not sending pause frames. 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 Gigabit speed access ...SFP transceivers are Gigabit Ethernet switching products that deliver flexible three-speed performance (10/100/1000) and advanced voice-optimized features such as auto-QoS and auto-voice VLAN. 12 CHAPTER 1: GETTING STARTED About the Switch 2916 and 2924 The Switch 2916 and Switch 2924...
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Figure 2 Switch 2924 SFP Plus 24-Port-front panel 1 45 89 13 16 17 20 12 22 24 24 21 23 Front Panel Detail 13 Table 1 Hardware Features (continued) Feature Switch 2916 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...
Figure 2 Switch 2924 SFP Plus 24-Port-front panel 1 45 89 13 16 17 20 12 22 24 24 21 23 Front Panel Detail 13 Table 1 Hardware Features (continued) Feature Switch 2916 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...
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...). 14 CHAPTER 1: GETTING STARTED LED Status Indicators The 2916-SFP Plus 16-Port and 24-Port Ethernet switches provide LED indicators on the LEDs 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...
...). 14 CHAPTER 1: GETTING STARTED LED Status Indicators The 2916-SFP Plus 16-Port and 24-Port Ethernet switches provide LED indicators on the LEDs 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...
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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...
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... the web interface correctly, use one of Managing a Switch" on page 17. ■ Ensure that the switch is connected to enable them if you have already set up the switch with RJ-45 connectors. ■ A suitable Web browser. The switch's Web interface supports both secure (HTTPS) and non-...secure (HTTP) connections. These features are enabled on your browser settings. You will only need to the network using a Category 5 twisted pair Ethernet cable with IP information as described in "...
... the web interface correctly, use one of Managing a Switch" on page 17. ■ Ensure that the switch is connected to enable them if you have already set up the switch with RJ-45 connectors. ■ A suitable Web browser. The switch's Web interface supports both secure (HTTPS) and non-...secure (HTTP) connections. These features are enabled on your browser settings. You will only need to the network using a Category 5 twisted pair Ethernet cable with IP information as described in "...
User Guide
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....3ab (Gigabit Ethernet), IEEE 802.1D (Bridging) Safety UL 60950-1, EN 60950-1, CSA 22.2 No. 60950-1, IEC 60950-1 EMC Emissions EN55022 Class A, CISPR 22 Class A, FCC Part 15 Subpart B Class A, ICES-003 Class A, VCCI Class A, EN61000-3-2, EN61000-3-3. B DEVICE SPECIFICATIONS AND FEATURES Related Standards The 3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus have been...
....3ab (Gigabit Ethernet), IEEE 802.1D (Bridging) Safety UL 60950-1, EN 60950-1, CSA 22.2 No. 60950-1, IEC 60950-1 EMC Emissions EN55022 Class A, CISPR 22 Class A, FCC Part 15 Subpart B Class A, ICES-003 Class A, VCCI Class A, EN61000-3-2, EN61000-3-3. B DEVICE SPECIFICATIONS AND FEATURES Related Standards The 3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus have been...
User Guide
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...valid link light, and that the port has not been disabled Ensure that the pin-out complies with IP protocol Faulty ethernet cable Faulty port Faulty module Incorrect initial configuration Replace the cable Replace the module Replace the module Erase the connection and ...Replace the serial cable Reconfigure the emulation software connection settings. Troubleshooting Solutions 193 Table 12 Troubleshooting Solutions Problems Possible Cause Solution Switch does not run; Self-test exceeds 15 seconds The device may already be open. No connection is established and the ...
...valid link light, and that the port has not been disabled Ensure that the pin-out complies with IP protocol Faulty ethernet cable Faulty port Faulty module Incorrect initial configuration Replace the cable Replace the module Replace the module Erase the connection and ...Replace the serial cable Reconfigure the emulation software connection settings. Troubleshooting Solutions 193 Table 12 Troubleshooting Solutions Problems Possible Cause Solution Switch does not run; Self-test exceeds 15 seconds The device may already be open. No connection is established and the ...
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... Mbps connections 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 a working or previous... if necessary. 194 APPENDIX D: TROUBLESHOOTING Table 12 Troubleshooting Solutions (continued) Problems Possible Cause Device is in the NMS application, and change setting if necessary Contact 3Com
... Mbps connections 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 a working or previous... if necessary. 194 APPENDIX D: TROUBLESHOOTING Table 12 Troubleshooting Solutions (continued) Problems Possible Cause Device is in the NMS application, and change setting if necessary Contact 3Com
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... groups they wish to join or to communicate across switched networks. The standard uses packet tags that any device that is the device with the lowest IP address in Ethernet networks. IEEE 802.1Q VLAN Tagging-Defines Ethernet frame tags which provides independent spanning trees for the ...(QoS) in the subnetwork. IEEE 802.3x Defines Ethernet frame start/stop requests and timers used by requiring users to first enter a user ID and password for VLANs to which they already belong. that is plugged into the switch. IEEE 802.1D Specifies a general method for VLAN ...
... groups they wish to join or to communicate across switched networks. The standard uses packet tags that any device that is the device with the lowest IP address in Ethernet networks. IEEE 802.1Q VLAN Tagging-Defines Ethernet frame tags which provides independent spanning trees for the ...(QoS) in the subnetwork. IEEE 802.3x Defines Ethernet frame start/stop requests and timers used by requiring users to first enter a user ID and password for VLANs to which they already belong. that is plugged into the switch. IEEE 802.1D Specifies a general method for VLAN ...