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Watson Ethernet
Operating Manual
Watson-Ethernet-Manual.doc
Version 3.3-01
3-26
Revision: 2010-01-20
At the Customer side the outer tag is stripped off, leaving management packets
untagged. VLAN switching will send these packets to port MGMT3 which is
member of VLAN m.
Single-tagged packets ingressing at ports ETH1 .. ETH4 of the CPE modem will
be tagged with an outer tag s1 .. s4 depending on their ingress port and then
sent over the DSL. At the CO side the outer tag is stripped off, leaving single-
tagged packets egressing the CO modem at ETH1 .. ETH4.
Transparent bridging with inband management is configured with the Monitor
command BRIDGEMODE 3. This bridging mode must be enabled on both central
office (CO) and customer (CPE) modems.
3.6 G.826 Performance Monitoring
Watson Ethernet modems support performance monitoring as specified in ITU-T
G.826. The G.826 error performance parameters provide quantitative perfor-
mance information of a specific loop. They are intended to be used for long-term
evaluation of operating DSL spans.
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 calculations.
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 loop-
back 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.
LOOP2LOOP1
Figure 3-20: Test Loops controlled by the DSL Master
LOOP2 LOOP1
Figure 3-21: Test Loops controlled by the DSL Slave
- Declaration of Conformity 3
- Limited Product Warranty 9
- Table of Contents 11
- 1 Related Documents 17
- 2 Overview 19
- 3 Modem Features 23
- 3.1.2 Multipair operation 24
- 3.1.4 Power Backoff 26
- 3.1.7 Wetting Current 28
- 3.1.8 Master / Slave 29
- 3.1.9 DSL Clocking 29
- 3.2.1 Ethernet over DSL 29
- 3.2.2 Ethernet Bridging 30
- 3.2.4 VLANs 31
- 3.2.5 VLAN Examples 31
- 3.2.7 Stacked VLANs 35
- 3.3.1 Ethernet over DSL 41
- 3.3.2 VLAN features 41
- 3.3.4 Cisco HDLC 42
- 3.4 Firmware update 43
- 3.5 Management 43
- DISCONNECT 45
- 3.7 Test loops 48
- 3.8 Password protection 49
- 4 Powering 51
- 5 LEDs and Alarms 53
- 5.2 Tabletop LEDs 54
- 5.3 Alarm Conditions 55
- 5.4 Alarm Relays 55
- 5.5 Initialization Errors 56
- 6 The Monitor 57
- 6.2 Addressing of Plug-ins 58
- 6.3 Naming of ports 59
- 6.4 Telnet Access 59
- 6.5.1 Welcome Screen 60
- 6.5.2 Menus 60
- 6.5.4 Tab completion 61
- 6.5.5 Help 61
- 6.5.6 Command History 61
- 6.5.7 Continuous Displays 62
- 7.1 Introduction 63
- 7.2.1 General Commands 64
- DEFAULT Configuration 66
- 7.3.1 Diagnostic 89
- 7.3.2 Status (Plug-in) 90
- 7.3.3 Status (Tabletop) 92
- 7.3.4 Alarms 93
- 7.3.5 Test loops 95
- 7.3.6 Reset Commands 95
- 7.4.1 G.826 Statistics 96
- 7.4.2 Ethernet Statistics 97
- 7.5.1 Connection control 100
- 7.5.2 Inventory 100
- 7.5.3 Password 101
- 7.5.4 Firmware Update 103
- 8 SNMP 105
- ENTITIY-MIB 106
- 8.1.3 SNMP Configuration 107
- 8.1.4 The Entity MIB 107
- 8.1.6 The ifTable 109
- 8.2 MIB Reference 110
- 8.2.5 RMON (RFC 2819) 111
- 8.2.6 IF MIB (RFC 2863) 111
- 8.2.11 MAU MIB (RFC 3636) 112
- 8.2.15 HDSL MIB 114
- 8.2.16 Schmid MIB 115
- 8.2.17 Watson MIB 115
- 9 Front and Rear Panels 117
- 10 Connectors and Cables 119
- 10.2 DSL Interface 121
- 10.2.2 DSL Cable 122
- 10.3 Ethernet Interface 123
- 10.4 Monitor Interface 123
- 10.5 Power and Grounding 124
- 11.1 Interfaces 127
- 11.2 Power Consumption 128
- 11.3 Ethernet 128
- 11.5 Management Functions 129
- 11.6 MTBF 129
- 11.7 Environment 130
- 12 Terminology 131
- 13 Product Order Codes 133
- Revision: 2010-01-20 134
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