ZyXEL Communications 2002 Series Uživatelská příručka Strana 80
- Strana / 161
- Tabulka s obsahem
- ŘEŠENÍ PROBLÉMŮ
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
VES-1000 Series Ethernet Switch
9-6 System Maintenance 1
Table 9-2 Port Statistics
FIELD DESCRIPTION
Constellation Constellation shows the modulation method and speed. The constellations are QAM 4,
QAM 8, QAM 16, QAM 64, QAM 256 where QAM (Quadrature Amplitude Modulation)
defines how many bits there are per symbol; for example QAM 4 means 2 bits per symbol
(2
2
), QAM 8, 3 bits (2
3
) per symbol and so on.
Int (Interpolation) defines how fast the symbols go through the line. It is equal to 25.0MHz
/ baud rate, so for example, Int 8 = 25.0 / 8 Mbaud.
Rate This is the VDSL raw speed.
Fc This is the carrier frequency
SNR The higher the SNR (Signal-to-Noise Ratio) number, the better. SNR (Signal-to-Noise
Ratio is the ratio of the amplitude of the desired signal to the amplitude of noise signals at
a given point in time.
MSE Minimum Square Error. The minimum mean-square error (also known as MMSE)
performance measure is a popular metric for optimal signal processing.
RS_ERR This is the Reed-Solomon error count. Reed-Solomon codes are block-based error
correcting codes and are used to correct errors in many systems including
PSD This is the Power Spectrum Density.
DISC This is a VDSL Disconnect counter.
9.2.2 Spanning Tree Protocol Status
Verify STP status in this menu.
Step 1. Enter 24 from the main menu to go to Menu 24 – System Maintenance.
Step 2. Enter 1 to open Menu 24.1 – System Status.
Step 3. Enter 2 to open Menu 24.1.2 — System Maintenance — Spanning Tree Protocol Status.
Figure 9-5 Menu 24.1.2 - Spanning Tree Protocol Status
Menu 24.1.2 - Spanning Tree Protocol Status
Spanning Tree Protocol= Running
Root Bridge: Our Bridge:
Bridge ID: 8000-00a0c5451da7 Bridge ID: 8000-00a0c5451da7
Cost to Bridge: 0 Hello Time(Time (sec): 2
PortID: 0X0000 Max Age(Age (sec): 20
Hello Time(Time (sec): 2 Forward Delay (sec): 15
Max Age(Age (sec): 20
Forward Delay(Delay (sec): 15
Topology:
Change Times: 0
Time Since Last Change: 0:00:16
Press ESC to return:
- VES-1000 Series 1
- Copyright 2
- ZyXEL Limited Warranty 3
- FCC Interference Statement 4
- FCC Warning 4
- CE Mark Warning: 4
- Taiwanese BCIQ A Warning: 4
- Certifications 4
- Customer Support 5
- Table of Contents 6
- Table of Contents vii 7
- List of Figures 9
- List of Diagrams 12
- List of Tables 13
- List of Tables xv 15
- Preface 16
- Related Documentation 17
- Getting Ready 19
- Chapter 1 21
- Switches 21
- 1.2 Applications 23
- 1.2.2 Enterprise Application 24
- 1.2.3 Campus Application 25
- Chapter 2 27
- Hardware 27
- Connections 27
- 2.3 Front Panel 28
- 2.4 Front Panel Ports 28
- 2.4.1 Console Port 29
- 2.4.2 VDSL Port Connections 29
- 2.5 Front Panel LEDs 30
- Hardware Connections 2-5 31
- Chapter 3 33
- Introducing 33
- the SMT 33
- 3.3 SMT Menus At A Glance 34
- Getting Started 38
- Chapter 4 39
- General 39
- Switch and IP Setup 39
- 4.2.1 Ethernet Port Trunking 41
- 4.2.4 GARP Timer Setup 44
- 4.2.5 GVRP 45
- 4.2.6 VLANs 45
- Port-based VLANS 46
- Tagged VLANs (IEEE 802.1Q) 46
- 4.2.7 IGMP Snooping 47
- 4.3 TCP/IP Setup 49
- Chapter 5 53
- 5.1.4 Ethernet Port Setup 56
- 5.2 Port Submenus 57
- Part III 61
- Chapter 6 63
- Route Setup 63
- 6-2 Static Route Setup 64
- Chapter 7 65
- 7.2.1 Static VLAN Setup 66
- Chapter 8 69
- Configuration 69
- 8.2 Supported MIBs 70
- 8.3 Configuring SNMP 70
- 8.4 SNMP Traps 71
- 8-4 SNMP Configuration 72
- Table 8-3 SNMP Traps 72
- System Maintenance 74
- Chapter 9 75
- Maintenance 1 75
- 9.2.1 System Maintenance 76
- Port Statistics 77
- 9-4 System Maintenance 1 78
- Table 9-2 Port Statistics 78
- System Maintenance 1 9-5 79
- 9.2.3 VLAN Status 81
- 9.3.1 System Information 83
- 9.4 Log and Trace 84
- 9.4.2 UNIX Syslog 85
- 9.5 Diagnostic 86
- System Maintenance 1 9-13 87
- Chapter 10 89
- Firmware 89
- and Configuration File 89
- Maintenance 89
- 10.2 Backup Configuration 90
- 10.2.4 GUI-based FTP Clients 92
- 10.2.7 TFTP Command Example 93
- 10.3 Restore Configuration 94
- 10.3.2 FTP Restore Example 95
- 10.4.1 Firmware File Upload 97
- 10.4.5 TFTP File Upload 99
- HyperTerminal 102
- Chapter 11 105
- Maintenance 2 105
- 11.2.1 Resetting The Time 106
- 11.3.1 Secured Client Sets 107
- 11.4 Hardware Monitor 109
- Commands 115
- Chapter 12 115
- VDSL-Related 115
- 12.2 VDSL Commands 116
- 12.2.1 Set VDSL Mode 117
- 12.2.4 Reset a VDSL Channel 118
- 12.2.7 VDSL Version Command 120
- 12.2.9 VDSL Show Command 120
- 12.2.11 VDSL Debug Command 121
- 12.3.4 Enet Fctrl Command 125
- 12.3.5 Enet Monitor Command 125
- Chapter 13 127
- Switch-Related 127
- 13.3 Port Status Command 128
- 13.4 VLANs 129
- SYMBOL DESCRIPTION 130
- 13.4.2 VLAN Set Command 131
- Sw vlan set 3 1 132
- Sw vlan set 4 1 132
- 13.4.3 VLAN Clear Command 133
- Sw vlan clear 1 3 4 134
- Sw vlan clear 1 all 134
- 13.5 MAC Address Commands 135
- 13.6 MAC Address Learning 136
- 13.6.1 MAC Address Details 137
- 13.6.2 MAC Number 137
- 13.8 Switch Driver Commands 139
- TxFreeCnt = 79287 140
- Chapter 14 141
- 14.1.2 IGMP Snooping Queries 143
- 14.1.3 Enable IGMP Snooping 143
- Chapter 15 145
- Troubleshooting 145
- 15.4 Data Rate 146
- 15.5 Configured Settings 146
- 15.6 Password 146
- 15.7 Remote Server 147
- 15.8 Telnet 147
- 15-4 Troubleshooting 148
- Appendices and Index 150
- Appendix A 151
- Hardware Specifications 151
- • 4.4 kg 152
- • 35 watts maximum 152
- • 100-240VAC/1A, 50/60Hz 152
- Appendix B 153
- Pin Assignments 153
- F Appendix B 156
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