Parameters
seconds
Enter the number of seconds as the interval between retransmission. 
The range is 1 to 3600. The default is 1 second.
This value must be greater than the transmission and propagation 
delays for the interface.
Defaults 1 second
Command Modes INTERFACE
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.1.1.1
Introduced on the E-Series.
log-adjacency-changes
Set FTOS to send a Syslog message about changes in the OSPF adjacency state.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
log-adjacency-changes
To disable the Syslog messages, use the no log-adjacency-changes command.
Defaults Disabled.
Command Modes ROUTER OSPF
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Added support for Multi-Process OSPF.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.1.1.1
Introduced on the E-Series.
1061