Troubleshooting guide

Contents
ii
3.9.2 Traps cannot be received by the SNMP manager ............................................... 68
3.10 Communication failures in the neighboring device management functionality ............... 69
3.10.1 Neighboring device information cannot be obtained by the LLDP functionality 69
3.11 NTP communication failures............................................................................................ 71
3.11.1 Time information cannot be acquired from the NTP server ............................... 71
3.12 Communication failures in the IEEE 802.3ah/UDLD functionality .................................. 72
3.12.1 Port is in inactivate status by the IEEE 802.3ah/UDLD functionality ................. 72
3.13 Communication failures in filtering and QoS configurations ........................................... 73
3.13.1 Checking the filtering and QoS control configuration information...................... 73
3.14 Port mirroring failures ...................................................................................................... 74
3.14.1 BPDUs are sent from a mirror port .................................................................... 74
3.15 Power saving functionality failures .................................................................................. 75
3.15.1 LED brightness control is disabled .................................................................... 75
3.15.2 Power saving functionality scheduling is disabled ............................................. 76
3.16 Failures occurring when long-life solution is supported .................................................. 77
3.16.1 Correct date not displayed in temperature history ............................................. 77
4. Obtaining Failure Information .................................................................................................... 79
4.1 Obtaining failure information ............................................................................................. 80
4.2 Writing data to a memory card .......................................................................................... 81
4.3 Transferring files via FTP .................................................................................................. 82
Appendix .......................................................................................................................................... 83
A. Detailed display contents of the show tech-support command ............................................ 84
A.1 Detailed display contents of the "show tech-support" command ...................................... 84
Index ................................................................................................................................................. 91