OSPF
Use the OSPF subtab to enable the OSPF routing protocol on the ONS node. OSPF must be enabled on the node for the ONS node to participate in OSPF-enabled networks.
 
Item
Description
DCC/GCC OSPF Area ID Table
Allows you to assign different OSPF Area IDs to the ONS node DCC terminations. The table lists the slot and port with DCC or generic communications channel (GCC) terminations. The Area ID can be any number between 000.000.000.000 and 255.255.255.255, but must be unique to the LAN OSPF area.
RS-DCC Metric
Sets a “cost” for sending packets across the regenerator section DCC, which is used by OSPF routers to calculate the shortest path. This value should always be higher than the multiplex section (Line) DCC (MS-DCC) metric. The default RS-DCC metric is 100. It is usually not changed.
MS-DCC Metric
Sets a “cost” for sending packets across the multiplex section (Line) DCC. This value should always be lower than the RS-DCC metric. The default MS-DCC metric is 33. It is usually not changed.
OSPF on LAN
The fields in this area enable OSPF on the LAN where the ONS node is connected:
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OSPF active on LAN: When checked, enables the ONS node OSPF topology to be advertised to OSPF routers on the LAN. Enable this field on ONS nodes that directly connect to OSPF routers.
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LAN Port Area ID: The OSPF area ID (dotted decimal format) for the router port where the ONS node is connected. (This number is different from the DCC/GCC OSPF Area ID.)
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Authentication Type: Indicates whether password authentication is required. No authentication is the default. If authentication is provisioned, the button name changes to Simple Password. To provision the OSPF authentication, click the button and complete the Edit Authentication dialog box by choosing the Authentication Type and the Authentication Key.
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Router Priority: The designated router priority for a subnet.
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Hello Interval (sec): Number of seconds between OSPF “hello” packet advertisements sent by OSPF routers. Ten seconds is the default.
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Dead Interval: Number of seconds that will pass while an OSPF router's packets are not visible before its neighbors declare the router down. Forty seconds is the default.
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Transmit Delay (sec): The service speed. One second is the default.
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Retransmit Interval (sec): The time that will elapse before a packet is resent. Five seconds is the default.
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LAN Metric: Sets a “cost” for sending packets across the LAN. This value should always be lower than the DCC metric. Ten is the default.
OSPF Area Range Table
Displays the node’s OSPF area range table, if created. Area range tables consolidate the information that is outside an OSPF Area border. One ONS node in the OSPF area is connected to the OSPF router. An area range table on this node points the router to the other nodes that reside within the ONS node OSPF area.
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Range Address: The area IP address for the ONS nodes that reside within the OSPF area. For example, if the OSPF area includes nodes with IP addresses 10.10.20.100, 10.10.30.150, 10.10.40.200, and 10.10.50.250, the range address would be 10.10.0.0.
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Range Area ID: The OSPF area ID for the ONS nodes. This is either the ID in the DCC OSPF Area ID field or the ID in the Area ID for LAN Port field.
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Mask Length: The subnet mask length for the area range table.
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Mask: The subnet mask.
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Advertise: Indicates whether the area range table is advertised on the OSPF network to which the ONS node is connected.
Create
Displays the Create Area Range Table dialog box to create a new area range table.
Edit
Displays the Edit Area Range Table dialog box to edit the highlighted area range table.
Delete
Deletes the highlighted area range table.
OSPF Virtual Link Table
Displays the node’s OSPF virtual link table, if created. All OSPF areas must be connected to Area 0. If the ONS node OSPF area is not physically connected to Area 0, the virtual link table provides the disconnected area with a logical path to Area 0:
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Neighbor: The router ID of the Area 0 router.
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Transmit Delay (sec): The service speed. One second is the default.
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Retransmit Int (sec): The time that will elapse before a packet is resent. Five seconds is the default.
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Hello Int (sec): The number of seconds between OSPF hello packet advertisements sent by OSPF routers. Ten seconds is the default.
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Dead Int (sec): The number of seconds that will pass while an OSPF router’s packets are not visible before its neighbors declare the router down. Forty seconds is the default.
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Auth Type: Indicates the OSPF authentication type, either No Authentication or Simple Password.
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Auth Key: If authentication type is set to Simple Password, the authentication key (password) is listed here.
Create
Displays the Create Virtual Link Table dialog box to create a new OSPF virtual link table.
Edit
Displays the Edit Virtual Link Table dialog box to edit the highlighted virtual link table.
Delete
Deletes the highlighted virtual link table.
Apply
Applies changes made to the OSPF subtab fields.
Reset
Cancels any OSPF subtab changes and returns the fields to their last-saved settings.
Help
Displays context-sensitive help.

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