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2.Configure OSPF protocol parameters
（
1
）
Configure OSPF package sending mechanism parameters
1
）
Configure OSPF package verification
2
）
Set the OSPF interface to receive only
3
）
Configure the cost for sending packages from the interface
Command Explanation
Interface configuration mode
ip ospf authentication
{ message-digest | null}
no ip ospf authentication
Configures the authentication method by the
interface to accept OSPF packages; the no ip
ospf authentication command restores the
default settings.
ip ospf authentication-key LINE
no ip ospf authentication-key
Configure the key of the authentication
process of OSPF data packets receiving for
the interfaces; the no action of this command
restores the default settings.
ip ospf cost <cost >
no ip ospf cost
Sets the cost for running OSPF on the
interface; the “
no ip ospf cost
” command
restores the default setting.
4
）
Configure OSPF package sending timer parameter (timer of broadcast interface
sending HELLO package to poll, timer of neighboring layer3 switch invalid timeout, timer
of LSA transmission delay and timer of LSA retransmission.
Command Explanation
Interface configuration mode
ip ospf hello-interval <time>
no ip ospf hello-interval
Sets interval for sending HELLO packages;
the “
no ip ospf hello-interval
” command
restores the default setting.
ip ospf dead-interval <time >
no ip ospf dead-interval
Sets the interval before regarding a neighbor
layer3 switch invalid; the “
no ip ospf
dead-interval
” command restores the default
setting.
ip ospf transit-delay <time>
no ip ospf transit-delay
Sets the delay time before sending link-state
broadcast; the “
no ip ospf transmit-delay
”
command restores the default setting.