SFP Mode | 3Com 2426-PWR, 2226-SFP, 2250-SFP guide

14INTRODUCING THE BASELINE SWITCH

1000BASE-T Mode

Table 3 1000BASE-T Link/Activity Status LEDs

Link/Activity	Meaning

Green	The link is operating at 1000 Mbps.
Yellow	The link is operating at 10 or 100 Mbps.
Flashing Green	Packets are being received or
	transmitted on the port at 1000 Mbps.
Flashing Yellow	Packets are being received or
	transmitted on the port at 10 or 100
	Mbps.
Off	The link has not been established,
	nothing is connected to the port, or
	there is a problem:
	■	Check that the attached device is
		powered on.
	■	Check that the cable is the correct
		type, is not faulty, and is inserted
		correctly.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.

Table 4 1000BASE-T SFP/Duplex Status LEDs

SFP/Duplex	Meaning

Yellow	The link is operating at full duplex.
Off	The link is operating at half duplex, or
	no link is established.

1000BASE-T only operates in full-duplex mode. 10/100BASE-TX can operate in half- or full-duplex mode.

SFP Mode

Table 5 SFP Link/Activity Status LEDs

Link/Activity	Meaning

Green	The link is operating at 1000 Mbps.
Flashing Green	Packets are being received or
	transmitted on the port at 1000 Mbps.
Off	The link has not been established; Either
	nothing is connected to the port, or
	there is a problem:
	■	Check that the attached device is
		powered on.
	■ Check that the SFP module is inserted
		correctly.
	■	Check that the fiber cable is the
		correct type, is not faulty, and is
		inserted correctly.
	■	Ensure that the transmit (TX) and
		receive (RX) fiber cables are not
		swapped. TX on the remote device

must be connected to RX on the local device; likewise, RX on the remote device must be connected to TX on the local device.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.

Image 14

3Com 2426-PWR, 2226-SFP, 2250-SFP manual SFP Mode

Contents

Installation and User Guide 3Com Corporation 350 Campus Drive Marlborough MA Contents Snmp 3COM CLI Reference Guide Page About this Guide Conventions Documentation Comments Product Registration Autosensing of MDI/MDIX Connections Overview of the Baseline SwitchFeatures and Capabilities Autonegotiating 10/100 Mbps Ports Gigabit Combo Ports RJ-45/SFP Physical FeaturesPower-over-Ethernet Capability Front Panel RJ-45 10/100 Ports Gigabit Combo Ports RJ-45/SFP 10/100BASE-TX Link/Activity Status LEDs SFP Mode Power LED Rear Panel Package Contents Installing the Switch Important Safety Information Positioning the Switch Importante Avviso di Sicurezza Using the Mounting Kit Rack-Mounting or Free-Standing Placing Units On Top of Each Other Supplying Power to the SwitchMontagesatz Anweisungen Checking for Correct Operation Status Meaning Inserting an SFP Transceiver Using SFP TranceiversApproved SFP Transceivers Performing Spot Checks Removing an SFP Transceiver Refer to Troubleshooting on Requirements for Accessing the Web Interface Using the Console Command Line Interface CLI CLI Summary with Default IP Address Logging On to the Web Interface CLI Summary with Assigned IP Address Navigating the Web Interface Menu Menu Item Description Snmp Buttons Port Status Running the 3Com Switch Detect Application 3Com Switch Detect Welcome Screen 3Com Switch Detect Search Screen Connecting to the WEB Interface Configuration Overview Device Summary Information Device View Polling Interval Automatic IP Configuration Administration SettingsModifying the IP Address Settings Color Key IP Setup Backup Configuration Restore Configuration Firmware Upgrade Reboot ResetSystem Access Initialize, keep IP setting User Summary Create User Modify User Remove User System Time SetupSystem Name Snmp Remove Configuring VLANsSnmp Add Vlan Setup Screen Modify Vlan Modify Port Rename Remove Port Detail Vlan Detail Sample Vlan ConfigurationsForwarding Tagged/Untagged Frames Setting Up Two VLANs on the Same Switch Setting Up Vlan Across Two Switches Tagged Vlan Configuration Spanning Tree Summary Spanning Tree Summary Screen Port Setup Spanning Tree Setup Screen Spanning Tree Port Setup Screen Igmp Snooping & Query Broadcast Storm Broadcast Storm Summary Screen QoS VoIP Traffic Settings Modify QoS VoIP Setup Screen OUI Summary OUI Add PoE 3CBLSF26-PWR only QoS OUI Modify Screen Configuring Port Settings Administration Port Administration Summary Screen Detail Port Administration Setup Screen Speed/Duplex for 1000 Mbps Connections Link Aggregation Guidelines for Creating Trunks Create Link Aggregation Summary Screen Use the Remove tab to delete a link aggregation group Radius Client SecurityStatistics 802.1X Settings Configure 802.1X Summary Screen Monitoring Address Table Port Mirroring Port Summary Use the Setup tab to create a port mirror session Cable Diagnostics Cable Diagnostic Summary Screen Diagnostics Cable Diagnostic Screen Configuring the Switch from the WEB Interface Troubleshooting Resetting to Factory Defaults Fiber cable is connected, but the Module Active LED is off Solving LED IssuesForgotten Static IP Address All ports appear to show continual activity If the Problem PersistsLink/Activity LED is on, but network performance is poor Troubleshooting Register Your Product Purchase Value-Added ServicesTroubleshoot Online Access Software Downloads Telephone Technical Support and Repair Contact Us Country Telephone Number Latsupportanc@3com.com Physical 3CBLSF26 Related StandardsEnvironmental Electrical 3CBLSF26PWR Related Standards Physical 3CBLSF50 Related StandardsEnvironmental Electrical Appendix B Technical Information PIN-OUTS Console Cable Modem Cable Null Modem CablePC-AT Serial Cable Ethernet Port RJ-45 Pin Assignments Pin Number 10/100 1000 Appendix C PIN-OUTS Logging on to the CLI Getting Started with the Command Line InterfaceConsole Port Concurrent CLI Sessions CLI CommandsAutomatic Logout Syntax Default Configuration Ping Parameters IpSetup 255.255.255.0 Upgrade Following example resets the Switch to factory defaults Initialize Password Logout Regulatory Notices 100 Bandwidth 1000BASE-TAuto-negotiation Category 5e Cables Category 3 CablesCategory 5 Cables Category 6 Cables Ieee 802.1D Full DuplexHalf Duplex Ieee 802.1Q Link Aggregation Power over EthernetLayer MAC Address Subnet Address SwitchServer Subnet Mask Vlan Index Numbers Index