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Chapter 8 Troubleshooting
Problem Solving Using a Subsystems Approach
Cisco SCE 2000 4/8xFE Installation and Configuration Guide
8-14 OL-7826-05
• Peer does not receive traffic from SCE 2000 (FE link is lit and Tx LED is flashing)
• FE link is up but not receiving from peer (FE link is lit, but Rx LED is not flashing)
Table 8-7 Troubleshooting the Link Interface Subsystem
Symptom Diagnostic Action Possible Cause Possible Solution
• Link is down. (LINK
LED not lit)
• Status is WARNING
(Status LED is
flashing orange)
• Output counters not
incrementing.
CLI command:
• show interface
FastEthernet 0/#
counters
Connector is not connected
to the platform or to the
network.
Reconnect the cable to the FE port
and to network.
FE cable is broken.
Reconnect / replace the cable to the
FE port.
If FE counters are incrementing, this
indicates LED problem. Contact
customer support.
CLI commands:
show interface
FastEthernet 0/#
counters
Check output of this
command for: “In good
unicast packet” and “Out
unicast packet”. These
counters should be constantly
incrementing.
Auto-negotiation may be
incorrectly configured.
Check auto-negotiation configuration
in the SCE 2000 and in its peers.
• FE link is up (FE
interface link LED is
continuous green and
FE interface Tx LED
is flashing)
• Peer does not receive
traffic from SCE 2000
CLI commands:
• show interface
FastEthernet 0/#
counters
Check output of this
command for: “Out unicast
packet”. This counter should
be constantly incrementing.
show interface
FastEthernet 0/#
Auto-negotiation is disabled
at the SCE 2000 but enabled
at peer.
Check auto-negotiation configuration
in the SCE 2000 and in peer.
• FE link is up (FE
interface link LED is
continuous green)
• No traffic received
(FE interface Rx LED
is not flashing)
No traffic is being
transmitted to the SCE 2000
from its peers.
Check traffic connection at peer.
- Cisco SCE 2000 4/8xFE 1
- OL-7826-05 i 3
- Contents 4
- Preface 7
- Audience 8
- Organization 8
- Related Publications 9
- Conventions 10
- Obtaining Documentation 11
- Documentation Feedback 12
- Cisco.com 12
- Technical Assistance Center 12
- Contacting TAC by Telephone 13
- General Overview 15
- 1-2 OL-7826-05 16
- The SCE Platform 17
- Management and Collection 18
- Network Management 19
- Subscriber Management 19
- Data Collection 20
- Front Panel 21
- 2-2 SCE 2000 22
- 2-3 SCE 2000 23
- Back Panel 24
- 2-4 SCE 2000 25
- 2-5 SCE 2000 26
- Topology 27
- Functionality 28
- Number of links 28
- Redundancy 28
- Link Continuity 29
- Physical Topologies 30
- Chapter 3 Topology 31
- Physical Topologies 32
- Topology-Related Parameters 34
- SCE 2000 Configuration 35
- Priority 36
- On-Failure Mode Parameter 36
- Installation and Maintenance 37
- Tools and Parts Required 38
- Site Requirement Guidelines 39
- 4-3 SCE 2000 40
- Installation Precautions 41
- 4-6 OL-7826-05 42
- OL-7826-05 4-7 43
- 4-8 OL-7826-05 44
- OL-7826-05 4-9 45
- 4-10 OL-7826-05 46
- Power Supply Overview 47
- 4-12: AC Power Module 48
- 4-13: DC Power Module 48
- OL-7826-05 4-13 49
- Power Supply Specifications 50
- OL-7826-05 4-15 51
- DC-Input Leads 52
- Reconnecting the Power 53
- 4-18 OL-7826-05 54
- OL-7826-05 4-19 55
- Fan Module Overview 56
- Replacing the Fan Module 57
- Replacing the Battery 58
- Connecting the Local Console 59
- Setting Up the Local Console 60
- Initial System Configuration 61
- 5-4 OL-7826-05 62
- 5-6 OL-7826-05 64
- Enter hostname [SCE 2000]: 65
- 5-8 OL-7826-05 66
- OL-7826-05 5-9 67
- 5-10 OL-7826-05 68
- OL-7826-05 5-11 69
- 5-12 OL-7826-05 70
- Entry Formats 71
- Order of Entries 71
- 5-14 OL-7826-05 72
- OL-7826-05 5-15 73
- Step 8: Configuring SNMP 74
- OL-7826-05 5-17 75
- 5-18 OL-7826-05 76
- 5-20 OL-7826-05 78
- OL-7826-05 5-21 79
- 5-22 OL-7826-05 80
- OL-7826-05 5-23 81
- 5-24 OL-7826-05 82
- OL-7826-05 5-25 83
- Cabling the Management Port 84
- OL-7826-05 5-27 85
- Installation 87
- Cabling Diagrams 88
- OL-7826-05 6-3 89
- 6-4 OL-7826-05 90
- OL-7826-05 6-5 91
- Cabling the FE Line Port 92
- Examining the Link LEDs 93
- 6-8 OL-7826-05 94
- Installing a Cascaded System 95
- 6-10 OL-7826-05 96
- Link Mode 97
- Monitoring the System 98
- OL-7826-05 6-13 99
- OL-7826-05 7-1 101
- 7-2 OL-7826-05 102
- Final Tests 103
- Viewing Configuration 104
- OL-7826-05 7-5 105
- 7-6 OL-7826-05 106
- Step 3 Type 107
- 7-8 OL-7826-05 108
- OL-7826-05 7-9 109
- Displaying the System Uptime 110
- OL-7826-05 7-11 111
- Troubleshooting 113
- Troubleshooting Tools 114
- OL-7826-05 8-3 115
- The User Log 116
- Copying the User Log 117
- Viewing the User Log 117
- Clearing the User Log 117
- Troubleshooting Tools 118
- Check the LEDs 119
- Identifying Startup Problems 120
- OL-7826-05 8-9 121
- 8-10 OL-7826-05 122
- OL-7826-05 8-11 123
- 8-12 OL-7826-05 124
- OL-7826-05 8-13 125
- 8-14 OL-7826-05 126
- Auto-negotiation is disabled 127
- OL-7826-05 I-1 129
- Index 130
- OL-7826-05 I-3 131
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