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Extra resources for Advanced OSPF, NLSP, IS IS and Troubleshooting 316

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SPF is running constantly Look at sh ip ospf stat Debug ip ospf monitor 316 0934_04F9_c4 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. ) • Useful is-is commands show clns is-neighbors show isis database show isis spf-log Debug isis adj-packets 316 0934_04F9_c4 79 © 1999, Cisco Systems, Inc. ) • IS-IS Interface sh clns int eth0 Ethernet0 is up, line protocol is up Checksums enabled, MTU 1497, Encapsulation SAP ERPDUs enabled, min. interval 10 msec.

All rights reserved. Printed in USA. scr 64 32 Benefits of New Design • Faster convergence within individual IGP’s • Policy can be applied • Regions can have local administration • Isolation of IGP’s—greater stability 316 0934_04F9_c4 © 1999, Cisco Systems, Inc. 65 Troubleshooting 316 0934_04F9_c4 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 66 33 Troubleshooting • Most common issues Adjacency is not coming up Information is in database not in routing table SPF running constantly 316 0934_04F9_c4 67 © 1999, Cisco Systems, Inc.

Printed in USA. ) • IP OSPF Area 8 Number of interfaces in this area is 2 It is a stub area, no summary LSA in this area Area has no authentication SPF algorithm executed 11 times Area ranges are Number of LSA 5. Checksum Sum 0x22812 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0 316 0934_04F9_c4 © 1999, Cisco Systems, Inc. ) Database not getting synchronized 316 0934_04F9_c4 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved.

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Advanced OSPF, NLSP, IS IS and Troubleshooting 316


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