address Commands

You can use the address area command to create a new OSPF interface. Use the other address commands to configure parameters for OSPF interfaces that already exist.

The address commands configure OSPF attributes for a single OSPF network. The ip ospf commands configure OSPF attributes for all OSPF networks in the given interface context—for example, in a multinet environment where multiple IP networks sit on top of an Ethernet interface.

Note: You must first issue the address area command before issuing any other address command.

address area

• Use to create a new OSPF interface and configure the area ID.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address 10.12.10.2 area 3

• You must first issue the address area command before issuing any other address commands.
• Use the no version to delete the area ID from the specified interface.
• See address area

address cost

• Use to specify the cost metric for the interface. The cost is used in calculating the SPF routing table and can be in the range 0–65535.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address unnumbered atm 4/0.1 area 3

  host1(config-router)#address unnumbered atm 4/0.1 cost 50

• Use the no version to reset the path cost to the default value, 1.
• See address cost

address dead-interval

• Use to specify the time period for the router’s neighbors to wait without seeing hello packets from the router before they declare the router to be down.
• The dead interval can be in the range 0–2147483647 seconds, and is advertised by the router’s hello packets.
• For the OSPF routers to become adjacent, the dead interval must be identical on each router.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address 192.168.10.32 area 6

  host1(config-router)#address 192.168.10.32 dead-interval 60

• Use the no version to reset the dead interval to the default value, 40 seconds.
• See address dead-interval

address hello-interval

• Use to specify the interval between hello packets that the router sends on the interface.
• The hello interval can be in the range 1–65535 seconds.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address 192.168.1.1 area 5

  host1(config-router)#address 192.168.1.1 hello-interval 25

• Use the no version to reset the hello interval to the default value, 10 seconds.
• See address hello-interval

address passive-interface

• Use to disable the transmission of routing updates on the interface, meaning that OSPF routing information is neither sent by nor received through the interface.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address 192.168.100.20 area 5

  host1(config-router)#address 192.168.100.20 passive-interface

• Use the no version to reenable the transmission of routing updates.
• See address passive-interface

address priority

• Use to specify the router priority, an 8-bit number in the range 1–255. Used in determining the designated router for the particular network.
• Applies only to nonbroadcast multiaccess (NBMA) networks. Every broadcast and NBMA network has a designated router.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address unnumbered loopback 0 area 6

  host1(config-router)#address unnumbered loopback 0 priority

• Use the no version to restore the default value, 1.
• See address priority

address retransmit-interval

• Use to specify the time between LSA retransmissions for the interface when an acknowledgment for the LSA is not received.
• Specify an interval in the range 0–3600 seconds; the default value is 5.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address 192.168.10.200 area 6

  host1(config-router)#address 192.168.10.200 retransmit-interval 500

• Use the no version to restore the default value, 5 seconds.
• See address retransmit-interval

address transmit-delay

• Use to specify the estimated time it takes to transmit a link-state update packet on the interface.
• Specify an interval in the range 0–3600 seconds; the default value is 1.
• The interface can have an IP address, or it can be unnumbered.
• Example

  host1(config-router)#address 10.100.25.38 area 7

  host1(config-router)#address 10.100.25.38 transmit-delay 30

• Use the no version to restore the default value, 1 second.
• See address transmit-delay

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