Planet SGS-6341-24T4X - Page 567

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35.32 ip ospf hello-interval
Command:
ip ospf [<ip-address>] hello-interval <time>
no ip ospf [<ip-address>] hello-interval
Function:
Specify the hello-interval on the interface; the “no ip ospf [<ip-address>] hello-interval” restores
the default value.
Parameter:
<ip-address> is the interface IP address shown in dotted decimal notation;
<time> is the interval sending HELLO packet, shown in seconds and ranging between 1～65535.
Default:
The hello-interval on the interface is 10 seconds.
Command Mode:
Interface Configuration Mode.
Usage Guide:
HELLO data packet is the most common packet which is periodically sent to adjacent layer 3 switch
to discover and maintain adjacent relationship, elect DR and BDR. The user set hello-interval
value will be written into the HELLO packet and transmitted. The less the hello-interval value is,
the sooner the network topological structure is discovered as well larger the cost. The ensure the
normal operation of OSPF protocol the hello-interval parameter between the layer 3 switches
adjacent to the interface must be in accordance.
Example:
Switch#config terminal
Switch(config)#interface vlan 1
Switch(Config-if-Vlan1)#ip ospf hello-interval 20
Relevant Commands:
ip ospf dead-interval
35.33 ip ospf message-digest-key
Command:
ip ospf [<ip-address>] message-digest-key <key_id> MD5 <LINE>
no ip ospf [<ip-address>] message-digest-key <key_id>
Function:
Specify the key id and value of MD5 authentication on the interface; the “no ip ospf [<ip-address>]