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Some things you see in the logfile are Hello packets sent to and received from<br />

neighbors:<br />

Jun 14 21:49:36 OSPF rcvd Hello 10.0.16.2 -> 224.0.0.5 (fe-0/0/0.0, IFL 0x42)<br />

Jun 14 21:49:36 Version 2, length 48, ID 192.168.19.1, area 0.0.0.1<br />

Jun 14 21:49:36 checksum 0x0, authtype 0<br />

Jun 14 21:49:36 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128<br />

Jun 14 21:49:36 dead_ivl 40, DR 10.0.16.1, BDR 10.0.16.2<br />

Jun 14 21:49:36 OSPF sent Hello 10.0.16.1 -> 224.0.0.5 (fe-0/0/0.0, IFL 0x42)<br />

Jun 14 21:49:36 Version 2, length 48, ID 192.168.42.1, area 0.0.0.1<br />

Jun 14 21:49:36 checksum 0x0, authtype 0<br />

Jun 14 21:49:36 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128<br />

Jun 14 21:49:36 dead_ivl 40, DR 10.0.16.1, BDR 10.0.16.2<br />

This log shows the values for two of the OSPF timers, the hello interval of 10 seconds<br />

(hello_ivl 10) and the dead interval of 40 seconds (dead_ivl 40), as well as the<br />

address of the DR and BDR and the priority to become the DR (128).<br />

You also see changes to the adjacency changes when neighbors come up:<br />

Jun 14 21:49:36 RPD_OSPF_NBRUP: OSPF neighbor 10.0.16.2 (fe-0/0/0.0) state changed<br />

from Loading to Full due to OSPF loading done<br />

Jun 14 21:49:36 CHANGE 10.0.0.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 2/0 fe-0/0/0.0 <br />

Jun 14 21:49:36 ADD 10.0.0.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 2/0 fe-0/0/0.0 <br />

Jun 14 21:49:36 CHANGE 10.0.1.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 2/0 fe-0/0/0.0 <br />

Jun 14 21:49:36 ADD 10.0.1.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 2/0 fe-0/0/0.0 <br />

Jun 14 21:49:36 CHANGE 10.0.2.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 4/0 fe-0/0/0.0 <br />

Jun 14 21:49:36 ADD 10.0.2.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 4/0 fe-0/0/0.0 <br />

Here are the adjacency changes when neighbors go down:<br />

Jun 14 22:00:26 RPD_OSPF_NBRDOWN: OSPF neighbor 10.0.16.2 (fe-0/0/0.0) state changed<br />

from Full to Down due to Kill all neighbors<br />

Jun 14 22:00:26 RPD_OSPF_NBRDOWN: OSPF neighbor 10.0.21.2 (se-0/0/3.0) state changed<br />

from Full to Down due to Kill all neighbors<br />

Jun 14 22:00:26 OSPF: multicast address 224.0.0.5/32, route ignored<br />

Jun 14 22:00:26 OSPF: multicast address 224.0.0.5/32, route ignored<br />

Jun 14 22:00:26 CHANGE 10.0.0.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 2/0 fe-0/0/0.0 <br />

Jun 14 22:00:26 CHANGE 10.0.1.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 2/0 fe-0/0/0.0 <br />

Jun 14 22:00:26 CHANGE 10.0.2.0/24 gw 10.0.16.2 OSPF pref 10/0<br />

metric 4/0 fe-0/0/0.0 <br />

Jun 14 22:00:26 RELEASE 10.0.21.0/24 gw (null) OSPF pref 10/0<br />

metric 12/0 se-0/0/3.0 <br />

Jun 14 22:00:26 CHANGE 10.0.22.0/24 gw (null) OSPF pref 10/0<br />

metric 24/0 se-0/0/3.0 <br />

Jun 14 22:00:26 CHANGE 192.168.12.1/32 gw (null) OSPF pref 10/0<br />

metric 12/0 se-0/0/3.0 <br />

414 | Chapter 12: OSPF<br />

This is the Title of the Book, eMatter Edition<br />

Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.

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