DES-3225G Series 24-Port Fast Ethernet Switch User’s Guide Sixth Edition (December 2001) 651S3225G065 Printed In Taiwan RECYCLABLE
24-port NWay Ethernet Switch User’s Guide ABOUT THIS GUIDE This User’s Guide tells you how to install your DES-3225G Series Switch, how to connect it
24-port NWay Ethernet Switch User’s Guide 90 Using the Console Interface The lower part of the screen is a read-only Browse Address Table that contai
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 91 ♦ Queries(TX) The number of IGMP requests sent by the Switch. ♦ Queries(R
24-port NWay Ethernet Switch User’s Guide 92 Using the Console Interface To display the GMRP Status screen, choose Network Monitoring from the main m
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 93 Figure 6-64. Switch History screen The switch history entries are lis
24-port NWay Ethernet Switch User’s Guide 94 Using the Console Interface Figure 6-65. Restart System screen Factory Reset Before performing a fac
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 95 Figure 6-66. Factory Reset Logout To exit the console program, choose Log
24-port NWay Ethernet Switch User’s Guide 96 Web-Based Network Management 77 WEB-BASED NETWORK MANAGEMENT Introduction The DES-3225G offers an embed
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 97 Clicking on this button causes an interactive view of the Switch’s front p
24-port NWay Ethernet Switch User’s Guide 98 Web-Based Network Management IP Settings Figure 7-1. IP Settings window This window is used to deter
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 99 Port Settings Figure 7-2. Port Settings window Select the port you want
24-port NWay Ethernet Switch User’s Guide Introduction 1 11 INTRODUCTION This section describes the features of the Switch, as well as giving some b
24-port NWay Ethernet Switch User’s Guide 100 Web-Based Network Management 4. Configure the Priority Queues setting for packets passing through this
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 101 The Switch allows you to copy frames transmitted and received on a port an
24-port NWay Ethernet Switch User’s Guide 102 Web-Based Network Management The information is described as follows: ♦ Switch Name A user-assigned n
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 103 The first setting allows you to enable or disable port auto-partitioning b
24-port NWay Ethernet Switch User’s Guide 104 Web-Based Network Management This window allows you to stop or start address learning, use an address l
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 105 Figure 7-8. Add/Modify Static Forwarding Table Entry window To use the
24-port NWay Ethernet Switch User’s Guide 106 Web-Based Network Management MAC Address Filtering Figure 7-9. MAC Address Filtering Table window M
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 107 Figure 7-10. Add/Modify MAC Address Filtering Table Entry window To us
24-port NWay Ethernet Switch User’s Guide 108 Web-Based Network Management Static Multicast Forwarding Figure 7-11. Static Multicast Forwarding T
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 109 Figure 7-12. Add / Modify Static Multicast Forwarding Table Entry wind
24-port NWay Ethernet Switch User’s Guide 2 Introduction Switching Technology Another key development pushing the limits of Ethernet technology is in
24-port NWay Ethernet Switch User’s Guide 110 Web-Based Network Management Spanning Tree The Switch supports 801.2d Spanning Tree Protocol, which all
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 111 ♦ Port Displays the port (on the switch) that offers the least path cost
24-port NWay Ethernet Switch User’s Guide 112 Web-Based Network Management STP Parameter & Port Settings Figure 7-14. STP Parameter & Por
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 113 ♦ STP State The Spanning Tree Protocol state for a selected port can eit
24-port NWay Ethernet Switch User’s Guide 114 Web-Based Network Management ♦ IP Multicast Filtering Age-out Timer When this timer elapses, the switc
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 115 Figure 7-17. Add/Delete IGMP Entry window To Add/Modify to the table o
24-port NWay Ethernet Switch User’s Guide 116 Web-Based Network Management Configure VLANs & MAC-based Domains Figure 7-18. Configure VLANs &
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 117 Configure IEEE 802.1Q VLANs Figure 7-19. Default Port VLAN Assignment
24-port NWay Ethernet Switch User’s Guide 118 Web-Based Network Management Figure 7-20. Ingress Filtering Check window Use this window to enable
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 119 Figure 7-21. Configure IEEE 802.1Q VLANs window Please note that this
24-port NWay Ethernet Switch User’s Guide Introduction 3 Performance features ♦ Store and forward switching scheme capability to support rate adapta
24-port NWay Ethernet Switch User’s Guide 120 Web-Based Network Management Figure 7-22. Configure IEEE 802.1Q VLANs Entry window To configure an
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 121 Figure 7-23. GVRP Configuration window This window allows you to enabl
24-port NWay Ethernet Switch User’s Guide 122 Web-Based Network Management Figure 7-24. GMRP Configuration window This window allows you to eithe
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 123 Trunk Figure 7-25. Configure Port Trunking window The Switch supports
24-port NWay Ethernet Switch User’s Guide 124 Web-Based Network Management Traps and Community Strings Figure 7-26. Traps and Community Strings w
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 125 User Accounts Figure 7-27. first User Accounts window Click the pointe
24-port NWay Ethernet Switch User’s Guide 126 Web-Based Network Management Figure 7-28. second User Accounts window To add or delete a User Accou
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 127 Console Port Settings Figure 7-29. Console Port Settings window This w
24-port NWay Ethernet Switch User’s Guide 128 Web-Based Network Management ♦ Baud Rate Determines the serial port bit rate that will be used the ne
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 129 ♦ % of Utilization This shows the percentage of available bandwidth each
24-port NWay Ethernet Switch User’s Guide 4 Unpacking and Setup 22 UNPACKING AND SETUP This chapter provides unpacking and setup information for the
24-port NWay Ethernet Switch User’s Guide 130 Web-Based Network Management Traffic in Frames: ♦ Frames Sent Counts the total number of frames tran
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 131 ♦ Late Collision Counts collisions that occur at or after the 64th byte
24-port NWay Ethernet Switch User’s Guide 132 Web-Based Network Management ♦ 65-127 The total number of packets (including bad packets) received th
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 133 Utilization Figure 7-34. Port Utilization Graph window The information
24-port NWay Ethernet Switch User’s Guide 134 Web-Based Network Management Browse Address Table Figure 7-35. MAC Address Table window The first s
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 135 Figure 7-36. MAC Address Table – MAC address window The second selecti
24-port NWay Ethernet Switch User’s Guide 136 Web-Based Network Management Figure 7-37. MAC Address Table – Port window The third selection on th
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 137 Figure 7-38. MAC Address Table – VLAN window The fourth selection on t
24-port NWay Ethernet Switch User’s Guide 138 Web-Based Network Management Browse IGMP Status Figure 7-39. Browse IGMP Status window This window
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 139 Browse GVRP Status Figure 7-40. GVRP Status window This window offers
24-port NWay Ethernet Switch User’s Guide Unpacking and Setup 5 Figure 2-1. Installing rubber feet for desktop installation Rack Installation T
24-port NWay Ethernet Switch User’s Guide 140 Web-Based Network Management Browse GMRP Status Figure 7-41. GMRP Status window This window offers
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 141 Switch History Figure 7-42. Switch Trap Logs window The Switch can rec
24-port NWay Ethernet Switch User’s Guide 142 Web-Based Network Management Reboot Switch Figure 7-43. Reboot the Switch window To perform a reboo
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 143 Reset to Factory Default Figure 7-44. Reset to Factory Default window
24-port NWay Ethernet Switch User’s Guide 144 Web-Based Network Management Update Firmware Figure 7-45. Update Firmware window To update firmware
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 145 Change Configuration File Figure 7-46. Change Configuration File windo
24-port NWay Ethernet Switch User’s Guide 146 Web-Based Network Management Save Settings to TFTP Server Figure 7-47. Save Settings to TFTP Server
24-port NWay Ethernet Switch User’s Guide Web-Based Network Management 147 Upload Log File Figure 7-48. Upload Log File window To save a log file
24-port NWay Ethernet Switch User’s Guide 148 Web-Based Network Management Save Changes Figure 7-49. Save Changes window To save all the changes
24-port NWay Ethernet Switch User’s Guide Technical Specifications 149 AA TECHNICAL SPECIFICATIONS General Standards: IEEE 802.3 10BASE-T Ethernet
24-port NWay Ethernet Switch User’s Guide 6 Unpacking and Setup Power on The DES-3225G switch can be used with AC power supply 100 - 240 VAC, 50/60 H
24-port NWay Ethernet Switch User’s Guide 150 Technical Specifications General Network Cables: 10BASE-T: 100BASE-TX: 100BASE-FX: 1000BASE-SX:
24-port NWay Ethernet Switch User’s Guide Technical Specifications 151 Physical and Environmental EMI: FCC Class A, CE Class A, VCCI Class A, BSMI
24-port NWay Ethernet Switch User’s Guide 152 RJ-45 Pin Specification BB RJ-45 PIN SPECIFICATION When connecting the DES-3225G Series Switch to anot
24-port NWay Ethernet Switch User’s Guide RJ-45 Pin Specification 153 RJ-45 Connector pin assignment Contact Media Direct Interface Signal 1 Tx +
24-port NWay Ethernet Switch User’s Guide 154 Sample Configuration File CC SAMPLE CONFIGURATION FILE This Appendix provides a sample configuration f
24-port NWay Ethernet Switch User’s Guide Sample Configuration File 155 If both the Firmware Update and Use Config File options are enabled on the Up
24-port NWay Ethernet Switch User’s Guide 156 Runtime Switch Software Default Settings DD RUNTIME SWITCH SOFTWARE DEFAULT SETTINGS Load Mode
24-port NWay Ethernet Switch User’s Guide Runtime Switch Software Default Settings 157
24-port NWay Ethernet Switch User’s Guide INDEX 10BASE-T Device...13 64...
24-port NWay Ethernet Switch User’s Guide Console Timeout ...37 CRC Error...
24-port NWay Ethernet Switch User’s Guide Identifying External Components 7 33 IDENTIFYING EXTERNAL COMPONENTS This chapter describes the front pane
24-port NWay Ethernet Switch User’s Guide Management VID ...68, 118 Master...
24-port NWay Ethernet Switch User’s Guide SNMP Trap Manager Configuration...82 Software Update menu ...
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Registration Card Print, type or use block letters. Your name: Mr./Ms ____________________________________________________________________________
24-port NWay Ethernet Switch User’s Guide 8 Identifying External Components Figure 3-3. Rear panel view of the Switch fitted with the optional Giga
24-port NWay Ethernet Switch User’s Guide Identifying External Components 9 100BASE-TX Module Figure 3-5. Two-port, 100BASE-TX module ♦ Two-port
Wichtige Sicherheitshinweise 1. Bitte lesen Sie sich diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den spätern Gebrauch auf.
24-port NWay Ethernet Switch User’s Guide 10 Identifying External Components ♦ Two-port, front-panel module. ♦ Connects to 100BASE-FX devices at fu
24-port NWay Ethernet Switch User’s Guide Identifying External Components 11 ♦ Allows connections up to 5 km in length using single-mode fiber optic
24-port NWay Ethernet Switch User’s Guide 12 Connecting The Switch 44 CONNECTING THE SWITCH This chapter describes how to connect the DES-3225G to y
24-port NWay Ethernet Switch User’s Guide Connecting The Switch 13 ♦ A 100BASE-TX hub or switch can be connected to the Switch via a two-pair Catego
24-port NWay Ethernet Switch User’s Guide 14 Switch Management Concepts 55 SWITCH MANAGEMENT CONCEPTS This chapter discusses many of the features us
24-port NWay Ethernet Switch User’s Guide Switch Management Concepts 15 IP Addresses and SNMP Community Names Each Switch has its own IP Address, whi
24-port NWay Ethernet Switch User’s Guide 16 Switch Management Concepts ♦ Link Change Event This trap is sent whenever the link of a port changes f
24-port NWay Ethernet Switch User’s Guide Switch Management Concepts 17 In the opposite case, if the Aging Time is too short, many entries may be age
24-port NWay Ethernet Switch User’s Guide 18 Switch Management Concepts On the Bridge Level ♦ Root Bridge The switch with the lowest Bridge Identif
24-port NWay Ethernet Switch User’s Guide Switch Management Concepts 19 Observe the following formulas when you set the above parameters: 1. Max
WARRANTIES EXCLUSIVE IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE CUSTOMER'S SOLE REMEDY SHALL BE, AT D-LINK'S OPTION, R
24-port NWay Ethernet Switch User’s Guide 20 Switch Management Concepts Bridge Priority lower the #, higher the priority Increases chance of becomin
24-port NWay Ethernet Switch User’s Guide Switch Management Concepts 21 Figure 5-3. Port trunking example The switch treats all ports in a trun
24-port NWay Ethernet Switch User’s Guide 22 Switch Management Concepts the utmost flexibility. MAC-based broadcast domains, on the other hand, allow
24-port NWay Ethernet Switch User’s Guide Switch Management Concepts 23 Sharing Resources Across 802.1Q VLANs Network resources such as printers and
24-port NWay Ethernet Switch User’s Guide 24 Switch Management Concepts ♦ Tagging The act of putting 802.1Q VLAN information into the header of a p
24-port NWay Ethernet Switch User’s Guide Switch Management Concepts 25 In the above example, step 4 is the key element. Because the packet has 802.1
24-port NWay Ethernet Switch User’s Guide 26 Switch Management Concepts Segmenting Broadcast Domains The Switch allows you to segment broadcast domai
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 27 66 USING THE CONSOLE INTERFACE Your 24-port NWay Ethernet Switch supports a
24-port NWay Ethernet Switch User’s Guide 28 Using the Console Interface Figure 6-1. Example of a console connection Connecting to the Switch Us
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 29 Figure 6-2. Initial screen, first time connecting to the Switch Note: T
reference materials. D-Link makes no warranty that its software products will work in combination with any hardware, or any application or system/p
24-port NWay Ethernet Switch User’s Guide 30 Using the Console Interface User Accounts Management From the screen above, move the cursor to the User
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 31 In order to retain any modifications made in the current session by saving t
24-port NWay Ethernet Switch User’s Guide 32 Using the Console Interface Figure 6-5. User Accounts Management menu 1. Choose Create/Modify User
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 33 2. Type in your Username and press <Enter>. 3. If you are a new user
24-port NWay Ethernet Switch User’s Guide 34 Using the Console Interface Setting Up The Switch This section will help prepare the Switch user by desc
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 35 Figure 6-9. IP Configuration screen The fields listed under the Current
24-port NWay Ethernet Switch User’s Guide 36 Using the Console Interface Configure Console You can use the Console Options screen to choose whether
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 37 Configure Switch The Switch Configuration screen shows various pieces of inf
24-port NWay Ethernet Switch User’s Guide 38 Using the Console Interface Figure 6-12. Configure Advanced Switch Features screen The fields you ca
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 39 Figure 6-13. Port Configuration screen Items in the above window are def
D-Link Offices for Registration and Warranty Service The product's Registration Card, provided at the back of this manual, must be sent to a D-
24-port NWay Ethernet Switch User’s Guide 40 Using the Console Interface ♦ Port Lock When locked, automatic learning for all stations connected to
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 41 Figure 6-14. Slot1-Port Configuration screen ♦ Port Field specifies ei
24-port NWay Ethernet Switch User’s Guide 42 Using the Console Interface ♦ Broadcast Storm Falling Action This setting will be activated when the
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 43 ♦ Flow Control Enables or disables IEEE 802.1x full-duplex (only) flow con
24-port NWay Ethernet Switch User’s Guide 44 Using the Console Interface Figure 6-16. Configure Port Mirroring screen To configure a mirror port,
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 45 Figure 6-17. Configure Spanning Tree Protocol menu 2. Choose STP P
24-port NWay Ethernet Switch User’s Guide 46 Using the Console Interface The information on the screen is described as follows: ♦ Spanning Tree Prot
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 47 STP Port Control To change the parameters on individual ports: 1. Choose Co
24-port NWay Ethernet Switch User’s Guide 48 Using the Console Interface The Configure Filtering and Forwarding Table screen allows you to allows you
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 49 To access the Custom Forwarding Table, choose Configure Filtering and Forwar
24-port NWay Ethernet Switch User’s Guide 50 Using the Console Interface Configure MAC Address Filtering The Static Filtering Table contains filterin
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 51 Figure 6-23. IGMP Configuration screen Items in the above window are def
24-port NWay Ethernet Switch User’s Guide 52 Using the Console Interface Figure 6-24. IEEE 802.1Q IGMP Configuration screen Choosing Add/Remove I
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 53 Figure 6-25. Add/Remove IGMP Entry screen The above screen is used to sp
24-port NWay Ethernet Switch User’s Guide 54 Using the Console Interface Figure 6-26. IEEE 802.1Q IGMP Configuration screen Items in the above sc
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 55 2. Select MAC-based Broadcast Domains under Restart Mode and then press APP
24-port NWay Ethernet Switch User’s Guide 56 Using the Console Interface Figure 6-28. VLANs & MAC-based Broadcast Domains Configuration menu
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 57 Figure 6-29. MAC-based Broadcast Domains Configuration menu Choose Add/R
24-port NWay Ethernet Switch User’s Guide 58 Using the Console Interface Figure 6-30. Add/Remove MAC-based Broadcast Domains screen The fields yo
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 59 Figure 6-31. the first Add/Remove MAC-based Broadcast Domain Members scr
Table of Contents INTRODUCTION...
24-port NWay Ethernet Switch User’s Guide 60 Using the Console Interface Figure 6-32. the second Add/Remove MAC-based Broadcast Domain Members sc
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 61 Figure 6-33. VLANs & MAC-based Broadcast Domains Configuration menu
24-port NWay Ethernet Switch User’s Guide 62 Using the Console Interface Figure 6-34. Configure VLAN (Port-Based) menu To create a Port-based VLAN,
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 63 Figure 6-35. Create a Port-based VLAN screen Enter a name for your new VLA
24-port NWay Ethernet Switch User’s Guide 64 Using the Console Interface Figure 6-36. Edit/Delete a Port-based VLAN screen After selecting Edit or
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 65 Figure 6-37. Edit/Delete a Port-based VLAN table Use this screen to either
24-port NWay Ethernet Switch User’s Guide 66 Using the Console Interface To view the VLANs & MAC-based Broadcast Domains Configuration menu for
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 67 Figure 6-39. IEEE 802.1Q VLANs Configuration menu Enter a Management VID i
24-port NWay Ethernet Switch User’s Guide 68 Using the Console Interface Figure 6-40. Ingress Filtering screen This screen allows you to enable o
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 69 Figure 6-41. Port VLAN assignment screen This screen allows you to set a
PORT TRUNKING...
24-port NWay Ethernet Switch User’s Guide 70 Using the Console Interface Figure 6-42. 802.1Q Static VLAN Settings screen The fields you can set a
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 71 Figure 6-43. GVRP Configuration screen This screen allows you to enable
24-port NWay Ethernet Switch User’s Guide 72 Using the Console Interface Figure 6-44. the first GMRP Configuration screen The Switch GMRP field a
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 73 Figure 6-45. the second GMRP Configuration screen Configure Static Multi
24-port NWay Ethernet Switch User’s Guide 74 Using the Console Interface Figure 6-46A. Static Multicast Forwarding Table screen To add an entry or
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 75 Figure 6-46B. Static Multicast Forwarding Table screen To add an entry or
24-port NWay Ethernet Switch User’s Guide 76 Using the Console Interface Figure 6-47. Configure Trunk screen The fields you can set are: ♦ Maste
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 77 Figure 6-48. Update Firmware and Configuration Files screen After making
24-port NWay Ethernet Switch User’s Guide 78 Using the Console Interface Figure 6-49. Utilities menu Ping Test Choose Ping Test to access the fol
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 79 Figure 6-50. Ping Test screen After filling in the fields above, press S
GETTING STARTED...
24-port NWay Ethernet Switch User’s Guide 80 Using the Console Interface Figure 6-51. Save Settings to TFTP Server screen The fields you can set
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 81 Figure 6-52. Save Switch History to TFTP Server screen The fields you ca
24-port NWay Ethernet Switch User’s Guide 82 Using the Console Interface Figure 6-53. SNMP Manager Configuration screen The following SNMP Manage
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 83 Choose Network Monitoring from the main menu. The following menu appears:
24-port NWay Ethernet Switch User’s Guide 84 Using the Console Interface Figure 6-55. Traffic Statistics menu Statistics Overview To access the f
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 85 Figure 6-56. Statistics Overview screen Select the desired increment set
24-port NWay Ethernet Switch User’s Guide 86 Using the Console Interface Figure 6-57. Port Traffic Statistics screen Select the desired setting i
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 87 Port Packet Error Statistics To access the third item on the Traffic Statist
24-port NWay Ethernet Switch User’s Guide 88 Using the Console Interface ♦ Dropped Frames The number of frames which are dropped by this port since
24-port NWay Ethernet Switch User’s Guide Using the Console Interface 89 ♦ Total RX The number of bytes received, good and bad. ♦ Unicast RX/Unica
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