Troubleshooting guide

BSR Troubleshooting Guide
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Misconfigured or Missing Network Router Table Entries 99
Misconfigured Route Filtering 100
Split Horizon is Disabled 101
Handling RIP Version Inconsistencies 101
Misconfigured Version of RIP Running on BSR 101
Misconfigured Version of RIP Running on Specified Interface 103
7 Troubleshooting OSPF
Introduction 109
Handling OSPF-designated Interface Problems 109
Handling Router Neighbor Misconfigurations 110
Misconfigured Router 110
Mismatched OSPF Parameters 111
Mismatched IP MTU 112
Resolving Missing Routes in Routing Table 113
RIP Routing Information Incorrectly Redistributed into OSPF 114
ABR Configured Without Area 0 Interface 115
8 Troubleshooting BGP
Introduction 119
Handling BGP Routing Problems 119
Missing Neighbor Table Entry 119
Misconfigured Access List 120
Missing Network Destination Advertisement 121
Handling BGP Peer Misconfigurations 121
9 Troubleshooting SONET
Introduction 127
Resolving Fault LED Issues 127
LOS Determination 127
LOS Resolution 128
LOF Determination 129
LOF Resolution 129
LOP Determination 130