User Guide
Page 208
...is plugged into the appropriate VLAN to management using HTTP SNMP, etc Be sure the switch has a valid IP address, subnet mask, and, the default gateway is not readable Replace the serial cable. Reconfigure the emulation software connection settings. No connection is LED established... and the port is properly connected to the switch, and to -pin straight/flat cable. Ensure that the pin-out complies with IP protocol. Faulty ethernet cable Replace the cable. appendix d: troubleshooting 197 Table 12 Troubleshooting Solutions Problems Possible...
...is plugged into the appropriate VLAN to management using HTTP SNMP, etc Be sure the switch has a valid IP address, subnet mask, and, the default gateway is not readable Replace the serial cable. Reconfigure the emulation software connection settings. No connection is LED established... and the port is properly connected to the switch, and to -pin straight/flat cable. Ensure that the pin-out complies with IP protocol. Faulty ethernet cable Replace the cable. appendix d: troubleshooting 197 Table 12 Troubleshooting Solutions Problems Possible...
User Guide
Page 209
... Solutions Problems Possible Cause Device is in the NMS application, and change setting if necessary. Check Rx and Tx on fiber optic cable. Bad cable Replace with a tested cable. Fiber optical cable connection is off Incorrect ethernet cable, e.g., crossed rather than straight cable, or vice versa, split pair (incorrect twisting of...
... Solutions Problems Possible Cause Device is in the NMS application, and change setting if necessary. Check Rx and Tx on fiber optic cable. Bad cable Replace with a tested cable. Fiber optical cable connection is off Incorrect ethernet cable, e.g., crossed rather than straight cable, or vice versa, split pair (incorrect twisting of...
User Guide
Page 225
... suite of protocols which serves as with a cryptographic key, and encrypt data connections between management clients and the switch. Rapid Spanning Tree RSTP reduces the convergence time for securely transporting authentication data, including passwords, over 802.11 ...the network. (RADIUS) Remote Monitoring RMON provides comprehensive network monitoring capabilities. Protocol (SNMP) Secure Shell (SSH) A secure replacement for subnet routing, authentication, and multicast transmissions. It adds useful capabilities for remote access functions, including Telnet. Like the ...
... suite of protocols which serves as with a cryptographic key, and encrypt data connections between management clients and the switch. Rapid Spanning Tree RSTP reduces the convergence time for securely transporting authentication data, including passwords, over 802.11 ...the network. (RADIUS) Remote Monitoring RMON provides comprehensive network monitoring capabilities. Protocol (SNMP) Secure Shell (SSH) A secure replacement for subnet routing, authentication, and multicast transmissions. It adds useful capabilities for remote access functions, including Telnet. Like the ...
User Guide
Page 227
...which are available to manage your installation with minimal disruption to troubleshoot 3Com products. Expert assessment and implementation services are authorized to Gain Service Benefits Solve ...3COM PRODUCTS 3Com offers product registration, case management, and repair services through eSupport.3com.com. You must first register your product at : http://knowledgebase.3com.com It contains thousands of warranty and other service benefits, you can purchase value-added services such as 24x7 telephone technical support, software upgrades, onsite assistance, or advanced hardware replacement...
...which are available to manage your installation with minimal disruption to troubleshoot 3Com products. Expert assessment and implementation services are authorized to Gain Service Benefits Solve ...3COM PRODUCTS 3Com offers product registration, case management, and repair services through eSupport.3com.com. You must first register your product at : http://knowledgebase.3com.com It contains thousands of warranty and other service benefits, you can purchase value-added services such as 24x7 telephone technical support, software upgrades, onsite assistance, or advanced hardware replacement...