3Com 4007 Implementation Manual page 474

474 C 19: O S P F (OSPF) R
HAPTER PEN HORTEST ATH IRST OUTING
The default value for the transmit delay is 1 second.
Transmit delay
Set the transmit delay to an integer value greater than 0.
To set the transmit delay, take into account the transmission and
propagation delays for the interface.
Set the transmit delay according to the link speed; use a longer
transmit delay for slower link speeds.
The transmit delay is more effective on very low link speeds.
The default value for the Hello interval is 10 seconds.
Hello interval
The smaller the Hello interval, the faster that topological changes are
detected, although more routing traffic ensues.
Set the Hello interval to the same value for all routers on the same
network segment.
The default value for the dead interval is 40 seconds.
Dead interval
Set the dead interval to 4 times the value specified for the hello timer.
Set the dead interval to the same value for all routers on the same
network segment.
The default value for the retransmit interval is 5 seconds.
Retransmit interval
Set the retransmit interval to greater than the expected round trip
delay between any two routers on the attached network.
Set the value that you specify for the retransmit interval conservatively,
to avoid needless transmissions.
Set the retransmit interval higher for serial lines and virtual links.
By default, an OSPF interface does not have an associated password.
Password
Use the same password for all routers on the same network segment.
OSPF passwords are not encrypted. Therefore, a packet analyzer can
be used to obtain the password by tapping the wire.
If no password is defined for an interface, the interface does not verify
the existence of a password on reception of a packet.