Table Of Contents - ZyXEL Communications ES 3500 Series Troubleshooting Manual

1 How to Troubleshoot Switch Related Issues . ..................................................... 3
2 Symptom of Troubleshooting ........................................................................... 7
3 Basic Information ............................................................................................. 9
4 Hardware Monitor Status . .............................................................................. 11
5 Switch Auto-Reboot, Crash . ............................................................................ 15
6 Troubleshooting for Loop ............................................................................... 16
7 Troubleshooting for VLAN .............................................................................. 25
8 Troubleshooting for Multicast ........................................................................ 37
9 Troubleshooting for Layer 2 IGMP Snooping . .................................................. 44
10 Troubleshooting for L3 IGMP Routing . ......................................................... 56
11 Troubleshooting for Multicast VLAN Registration ........................................ 64
12 Troubleshooting for IP Source Guard ........................................................... 76
13 Troubleshooting for DHCP Relay . ................................................................. 86
14 Troubleshooting for DHCP Server ................................................................ 97
15 Troubleshooting for ACL . ........................................................................... 105
16 Troubleshooting for Routing . ..................................................................... 116
17 Troubleshooting for CPU high . ................................................................... 128
18 Troubleshooting for PoE ............................................................................ 129
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