Hardware Installation Guide
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... 1-3 Master LED Port Mode Off Green Amber Description Switch is not used on the Catalyst 3750G-12S-SD switch. An error occurred when the switch was selecting the stack master switch or a stack error. 1-16 Catalyst 3750 Switch Hardware Installation Guide OL-6336-10 For more information about the Cisco RPS 2300, see the Cisco RPS 675 Redundant Power System Hardware Installation Guide. For...
... 1-3 Master LED Port Mode Off Green Amber Description Switch is not used on the Catalyst 3750G-12S-SD switch. An error occurred when the switch was selecting the stack master switch or a stack error. 1-16 Catalyst 3750 Switch Hardware Installation Guide OL-6336-10 For more information about the Cisco RPS 2300, see the Cisco RPS 675 Redundant Power System Hardware Installation Guide. For...
Hardware Installation Guide
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... is off even if the powered device is connected to a PoE port. Green Link present. Port is operating in full duplex. 1-18 Catalyst 3750 Switch Hardware Installation Guide OL-6336-10 Off Port is sending or receiving data. STAT (port status) DUPLX (duplex) Caution PoE faults are caused... be used to connect Cisco pre-standard IP Phones and wireless access points or IEEE 802.3af-compliant devices to the powered device will exceed the 370 W switch power capacity. Only standard-compliant cabling can affect connectivity, and errors such as STP checks the switch for the port has ...
... is off even if the powered device is connected to a PoE port. Green Link present. Port is operating in full duplex. 1-18 Catalyst 3750 Switch Hardware Installation Guide OL-6336-10 Off Port is sending or receiving data. STAT (port status) DUPLX (duplex) Caution PoE faults are caused... be used to connect Cisco pre-standard IP Phones and wireless access points or IEEE 802.3af-compliant devices to the powered device will exceed the 370 W switch power capacity. Only standard-compliant cabling can affect connectivity, and errors such as STP checks the switch for the port has ...
Hardware Installation Guide
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...missing pins on page 1-13 for a description of the LED colors and their meanings. Catalyst 3750 Switch Hardware Installation Guide 3-2 OL-6336-10 Look at the cable for marginal damage or ...cable for 10 Mb/s unshielded twisted pair (UTP) connections. Monitor Switch LEDs You must have many packet errors, or the port constantly loses and regains link. You can identify... that the switch functions properly. Contact your Cisco technical support representative if your switch does not pass POST. Verify Switch Connections Review this section when troubleshooting switch connectivity problems....
...missing pins on page 1-13 for a description of the LED colors and their meanings. Catalyst 3750 Switch Hardware Installation Guide 3-2 OL-6336-10 Look at the cable for marginal damage or ...cable for 10 Mb/s unshielded twisted pair (UTP) connections. Monitor Switch LEDs You must have many packet errors, or the port constantly loses and regains link. You can identify... that the switch functions properly. Contact your Cisco technical support representative if your switch does not pass POST. Verify Switch Connections Review this section when troubleshooting switch connectivity problems....
Hardware Installation Guide
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...both ends of your connected devices. Replace the crossover cable with security information. OL-6336-10 Catalyst 3750 Switch Hardware Installation Guide 3-3 Enable auto-MDIX on page 1-17 for more information. • ... type. If the link light for the port does not come on page 1-12 for loose connections. See the "SFP Module Slots" section on : • Connect the ...See Table 1-5 on the switch, or replace the cable. Each Cisco module has an internal serial EEPROM that the module meets the requirements for Cisco to check the port error-disabled, disabled, or shutdown...
...both ends of your connected devices. Replace the crossover cable with security information. OL-6336-10 Catalyst 3750 Switch Hardware Installation Guide 3-3 Enable auto-MDIX on page 1-17 for more information. • ... type. If the link light for the port does not come on page 1-12 for loose connections. See the "SFP Module Slots" section on : • Connect the ...See Table 1-5 on the switch, or replace the cable. Each Cisco module has an internal serial EEPROM that the module meets the requirements for Cisco to check the port error-disabled, disabled, or shutdown...
Hardware Installation Guide
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... one -way traffic on fiber-optic and twisted-pair links and by incorrectly connected interfaces on the switch to help identify difficult-to check the port or module error-disabled, disabled, or shutdown status. If necessary, re-enable the port or the interface. Replace...table. Spanning Tree Loops Spanning Tree Protocol (STP) loops can identify the end device MAC address in the software configuration guide. Catalyst 3750 Switch Hardware Installation Guide 3-4 OL-6336-10 In normal mode, UDLD detects unidirectional links because of port connectivity failure is used repeatedly ...
... one -way traffic on fiber-optic and twisted-pair links and by incorrectly connected interfaces on the switch to help identify difficult-to check the port or module error-disabled, disabled, or shutdown status. If necessary, re-enable the port or the interface. Replace...table. Spanning Tree Loops Spanning Tree Protocol (STP) loops can identify the end device MAC address in the software configuration guide. Catalyst 3750 Switch Hardware Installation Guide 3-4 OL-6336-10 In normal mode, UDLD detects unidirectional links because of port connectivity failure is used repeatedly ...
Hardware Installation Guide
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... problems. Speed, Duplex, and Autonegotiation If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch to the latest version available from the manually set speed or duplex parameter on the connected port. • A ...parameter is different from the manufacturer. Upgrade the NIC card driver to the connected device meets the recommended guidelines. OL-6336-10 Catalyst 3750 Switch Hardware Installation Guide 3-5 Cabling Distance If the port statistics show a large number of these guidelines when you set or change the...
... problems. Speed, Duplex, and Autonegotiation If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch to the latest version available from the manually set speed or duplex parameter on the connected port. • A ...parameter is different from the manufacturer. Upgrade the NIC card driver to the connected device meets the recommended guidelines. OL-6336-10 Catalyst 3750 Switch Hardware Installation Guide 3-5 Cabling Distance If the port statistics show a large number of these guidelines when you set or change the...
Hardware Installation Guide
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... ports. The mode-conditioning patch cord is required. H5579 Catalyst 3750 Switch Hardware Installation Guide B-6 OL-6336-10 Figure B-7 Switch 3 TD+ 6 TD- 1 RD+ 2 RD- Two Twisted-Pair Straight-Through Cable Schematic Router or PC 3 RD+ 6 RD- 1 TD+ 2 TD- H5578 Figure B-8 Switch 3 TD+ 6 TD- 1 RD+ 2 RD- ...MMF, 1000BASE-LX/LH SFP modules, and a short link distance can cause transceiver saturation, resulting in an elevated bit error rate (BER). Two Twisted-Pair Crossover Cable Schematic Switch 3 TD+ 6 TD- 1 RD+ 2 RD- When using dispersion-shifted SMF or low-attenuation SMF; Cable ...
... ports. The mode-conditioning patch cord is required. H5579 Catalyst 3750 Switch Hardware Installation Guide B-6 OL-6336-10 Figure B-7 Switch 3 TD+ 6 TD- 1 RD+ 2 RD- Two Twisted-Pair Straight-Through Cable Schematic Router or PC 3 RD+ 6 RD- 1 TD+ 2 TD- H5578 Figure B-8 Switch 3 TD+ 6 TD- 1 RD+ 2 RD- ...MMF, 1000BASE-LX/LH SFP modules, and a short link distance can cause transceiver saturation, resulting in an elevated bit error rate (BER). Two Twisted-Pair Crossover Cable Schematic Switch 3 TD+ 6 TD- 1 RD+ 2 RD- When using dispersion-shifted SMF or low-attenuation SMF; Cable ...