3Com 3C780 User Guide - Page 10

Using the Hub

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Page 10 highlights

Chapter 5 Using the Hub Getting Hub Information 5-1 Show Hub Configuration 5-1 Show MAC Frame Statistics 5-1 Show IP Addresses 5-3 Show MIB Counters 5-3 Show Neighbor Stations 5-4 Show Station Identification 5-4 Show Ports Information 5-5 Module Designation 5-6 PMD Class 5-6 PHY Type 5-7 Neighbor 5-7 PCM State 5-7 Connect State 5-9 LER Alarm and LER Cutoff 5-9 LER Estimate 5-9 LEM Rejects 5-10 LEM Count 5-10 Show Ring State 5-10 Interpreting the LEDs 5-11 Management Module LEDs 5-11 WRAP LED 5-13 FAN FAIL LED 5-14 HI TEMP LED 5-14 LOW BATT LED 5-14 Dangerous Environmental Conditions Display 5-14 RESET Function 5-15 Media Module LEDs 5-16 Using Miscellaneous Commands 5-17 Diagnosing Network Problems 5-17 ping Command 5-18 route Command 5-19 arp Command 5-20 show log and clear log Commands 5-21 Using Connectivity Commands 5-22 connect and disconnect Commands 5-22 logout Command 5-22 x

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x
Chapter 5
Using the Hub
Getting Hub Information
5-1
Show Hub Configuration
5-1
Show MAC Frame Statistics
5-1
Show IP Addresses
5-3
Show MIB Counters
5-3
Show Neighbor Stations
5-4
Show Station Identification
5-4
Show Ports Information
5-5
Module Designation
5-6
PMD Class
5-6
PHY Type
5-7
Neighbor
5-7
PCM State
5-7
Connect State
5-9
LER Alarm and LER Cutoff
5-9
LER Estimate
5-9
LEM Rejects
5-10
LEM Count
5-10
Show Ring State
5-10
Interpreting the LEDs
5-11
Management Module LEDs
5-11
WRAP LED
5-13
FAN FAIL LED
5-14
HI TEMP LED
5-14
LOW BATT LED
5-14
Dangerous Environmental Conditions Display
5-14
RESET Function
5-15
Media Module LEDs
5-16
Using Miscellaneous Commands
5-17
Diagnosing Network Problems
5-17
ping
Command
5-18
route
Command
5-19
arp
Command
5-20
show log
and
clear log
Commands
5-21
Using Connectivity Commands
5-22
connect
and
disconnect
Commands
5-22
logout
Command
5-22