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Watson 5 Ethernet
Operating Manual
W5-Ethernet-Manual.doc
Version 2.0-01
3-24 Revision: 2006-04-27
The evaluation of the G.826 error performance parameters is based on CRC (Cyclic Redundancy
Check) error detection. The estimation of a bit-error rate is not within the scope of the G.826 calcu-
lations.
On the DSL side, six CRC6 check bits are generated per DSL frame for each channel and direction.
The software counts block errors and evaluates the error performance according to ITU-T G.826
using these CRC6 bits.
G.826 statistics are available with the G826 Monitor command.
3.7 Test loops
Test loops can be activated via the Monitor or SNMP. Loop 1 will initiate a loopback on a local
Ethernet interface, Loop 2 will initiate a loopback on a remote DSL interface. Only one test loop can
be active at a given time.
Activation of a test loop will deactivate any previous loop. A system reset will deactivate any test
loop. A non-urgent alarm is raised while any loop is active.
DSL Master DSL Slave
User
Interface
User
Interface
LOOP2LOOP1
Figure 3-19: Test Loops controlled by the DSL Master
DSL Master DSL Slave
User
Interface
User
Interface
LOOP2 LOOP1
Figure 3-20: Test Loops controlled by the DSL Slave
Notes: ! The looped-back Ethernet packets egress the modems from the same port they were sent to
and have the same source and destination addresses they were sent with. While Ethernet
testing equipment can handle this situation it might be very confusing for "normal" Ethernet
ports or Ethernet switches.
! The Watson 5 Ethernet tabletop modems operated as DSL slave can only control LOOP1.
3.8 Password protection
The Watson 5 Ethernet modems feature password protection to management functions to prevent
unauthorized access e.g. on a modem that is installed at a customer site but is owned and man-
aged by the service provider.
Password protection is global i.e. once the correct password is entered access to all commands is
granted.
By default password protection is disabled. To enable it use the SET PASSWORD command to
define a password and then use the LOGOFF command to lock access to the Monitor. Now Moni-
- Declaration of Conformity 3
- Revision: 2006-04-27 5
- Limited Product Warranty 7
- Table of Contents 9
- Watson 5 Ethernet 11
- Operating Manual 11
- Revision: 2006-04-27 xi 11
- W5-Ethernet-Manual.doc 11
- Version 2.0-01 11
- Revision: 2006-04-27 xiii 13
- 1 Related Documents 15
- 2 Overview 17
- Figure 2-2: Campus Networks 18
- 2.3 Modem Types 19
- 2.4 Accessories 19
- 2-4 Revision: 2006-04-27 20
- 3 Modem Features 21
- 3.1.2 Multipair operation 22
- 3.1.3 Power Backoff 23
- 3.1.5 DSL Performance 23
- 3.1.6 Wetting Current 24
- 3.1.7 Master / Slave 25
- 3.1.8 DSL Clocking 25
- 3.2 Ethernet (plugin modem) 26
- 3.2.3 VLANs 27
- 3.2.4 VLAN Examples 28
- Revision: 2006-04-27 3-13 29
- 3-14 Revision: 2006-04-27 30
- 3.2.6 Stacked VLANs 31
- 3-16 Revision: 2006-04-27 32
- 3.3.1 Ethernet over DSL 33
- 3.3.2 VLAN transparency 33
- 3.3.3 Mixed mode operation 34
- 3.3.4 Cisco HDLC 34
- 3.4 Firmware update 35
- 3.5 Management 35
- 3-20 Revision: 2006-04-27 36
- Revision: 2006-04-27 3-21 37
- Tabletop 38
- Revision: 2006-04-27 3-23 39
- 3.7 Test loops 40
- 3.8 Password protection 40
- Revision: 2006-04-27 3-25 41
- 4 Powering 43
- 5 LEDs and Alarms 45
- 5.2 Tabletop LEDs 46
- 5.3 Alarm Conditions 47
- 5.4 Alarm Relays 47
- 5.5 Initialization Errors 48
- 6 The Monitor 49
- 6.2 Addressing of Plugins 50
- 6.3 Naming of ports 51
- 6.4 Telnet Access 51
- 6.5.1 Welcome Screen 52
- 6.5.2 Menus 52
- 6.5.3 Prefixes an Shortcuts 52
- 6.5.4 Tab completion 53
- 6.5.5 Help 53
- 6.5.6 Command History 53
- 6.5.7 Continuous Displays 53
- 7.1.1 General Commands 55
- 7-2 Revision: 2006-04-27 56
- Revision: 2006-04-27 7-3 57
- 7-4 Revision: 2006-04-27 58
- Revision: 2006-04-27 7-5 59
- 7-6 Revision: 2006-04-27 60
- Revision: 2006-04-27 7-7 61
- 7-8 Revision: 2006-04-27 62
- 7.1.7 VLAN Configuration 63
- 7-10 Revision: 2006-04-27 64
- Revision: 2006-04-27 7-11 65
- 7-12 Revision: 2006-04-27 66
- Revision: 2006-04-27 7-13 67
- 7-14 Revision: 2006-04-27 68
- Revision: 2006-04-27 7-15 69
- 7-16 Revision: 2006-04-27 70
- 7.2.1 Diagnostic 71
- 7.2.2 Status (Plugin) 72
- 7.2.3 Status (Tabletop) 73
- 7.2.4 Alarms 74
- Revision: 2006-04-27 7-21 75
- 7.2.5 Test loops 76
- 7.2.6 Reset Commands 76
- 7.3.1 G.826 Statistics 77
- 7.3.2 Ethernet Statistics 78
- Revision: 2006-04-27 7-25 79
- 7.4.1 Connection control 80
- 7.4.2 Inventory 80
- 7.4.3 Password 81
- 7.4.4 Firmware Upgrade 82
- Revision: 2006-04-27 7-29 83
- 8 SNMP 85
- 8.1.3 The Entity MIB 86
- 8.1.2 SNMP Configuration 86
- 8.1.4 VLAN indexing 87
- 8.2 MIB Reference 88
- 8.2.5 Entity MIB (RFC 2737) 89
- 8.2.6 RMON (RFC 2819) 89
- 8.2.7 IF MIB (RFC 2863) 89
- 8.2.11 MAU MIB (RFC 3636) 90
- 8.2.13 HDSL MIB 91
- 8.2.14 Schmid MIB 91
- 8.2.15 Watson MIB 91
- 9 Front and Rear Panels 93
- 10 Connectors and Cables 95
- 10.1.2 DSL Cable 96
- 10.2 Ethernet Interface 97
- 10.3 Monitor Interface 97
- 10.4 Power and Grounding 98
- 11.1 Interfaces 99
- 11.2 Power Consumption 100
- 11.3 Ethernet 100
- 11.4 Latency and Throughput 101
- 11.5 Management Functions 101
- 11.6 MTBF 101
- 11.7 Environment 102
- 12 Terminology 103
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