OSPF Routing

Use the J-Web configuration to create single-area OSPF networks.

To configure a single-area OSPF network:

  1. In the J-Web user interface, select Configure > Routing > OSPF.

    Note: After you make changes to the configuration in this window, you must commit the changes immediately for them to take effect. To commit all changes to the active configuration, select Commit Options > Commit. See Using the Commit Options to Commit Configuration Changes (J-Web Procedure) for details about all commit options.

  2. To manage OSPF configuration, click one:

    • Add—Adds an OSPF configuration instance. Enter information into the configuration page, as described in Table 24.
    • Edit—Modifies an existing OSPF configuration. Enter information into the configuration page, as described in Table 24.
    • Delete—Deletes an existing OSPF configuration.
  3. To modify OSPF global settings, click Edit. Enter information as described in Table 25.
  4. To disable the OSPF network, click Disable.

Table 24: OSPF Routing Configuration Summary

Field

Function

Your Action

General tab

Area ID

Uniquely identifies the area within its AS.

Type a 32-bit numeric identifier for the area, or type an integer.

If you enter an integer, the value is converted to a 32-bit equivalent. For example, if you enter 3, the value assigned to the area is 0.0.0.3.

Area Ranges

Specifies a range of IP addresses for an area when sending summary link advertisements (within an area).

To add a range:

  1. Click Add.
  2. Enter the area range.
  3. Specify the subnet mask.
  4. To override the metric for the IP address range, enter a specific metric value.
  5. To not display the routes that are contained within a summary, select Restrict advertisements of this area range.
  6. To have a summary of a route advertised only when an exact match is made with the configured summary range, select Enforce exact match for advertisement of this area range.
  7. Click OK.

To modify an existing area range, click Edit.

To delete an area range, click Delete.

Area Type

Designates the type of OSPF area.

Select the type of OSPF area you are creating from the list:

  • regular—A regular OSPF area, including the backbone area
  • stub—A stub area
  • nssa—A not-so-stubby area (NSSA)
Interfaces tab

Interfaces

Specifies the interfaces to be associated with the OSPF configuration

Click to select the interface from the list.

To edit an interface’s configuration, select the interface from the list and click Edit.

Policies tab

Import Policy

The import policy enables you to control which routes learned from an area are used to generate summary link-state advertisements (LSAs) into other areas.

Click Add to add an import policy.

Click Move up or Move down to move the selected policy up or down the list of policies.

Click Remove to remove an import policy.

Export Policy

The export policy enables you to specify which summary LSAs are flooded into an area.

Click Add to add an export policy.

Click Move up or Move down to move the selected policy up or down the list of policies.

Click Remove to remove an export policy.

Table 25: Edit OSPF Global Settings

FieldFunctionYour Action
General tab

Router Id

Specifies the ID for the router.

Enter a value.

RIB Group

Installs the routes learned from OSPF routing instances into routing tables in the OSPF routing table group.

Select a value.

Internal Route Preference

Specifies the route preference for internal groups.

Enter a value.

External Route Preference

Specifies the route preference for external groups.

Enter a value.

Graceful Restart

Configures graceful restart for OSPF.

To configure graceful restart:

  1. Enter the Notify Duration. Specify the estimated time to send out purged grace LSAs over all interfaces.
  2. Enter the Restart Duration. Specify the estimated time to reacquire a full OSPF neighbor from each area.
  3. Click to disable No Strict LSA Checking.
  4. Click to disable graceful restart helper capability. Helper mode is enabled by default.

SPF Options

Configure options for running the shortest-path-first (SPF) algorithm. You can configure a delay for when to run the SPF algorithm after a network topology change is detected, the maximum number of times the SPF algorithm can run in succession, and a hold-down interval after the SPF algorithm runs the maximum number of times.

To configure SPF:

  1. Enter the Delay Time. Specify the time interval between the detection of a topology change and when the SPF algorithm runs.
  2. Enter the Holddown Time. Specify the time interval to hold down, or wait before a subsequent SPF algorithm runs after the SPF algorithm has run the configured maximum number of times in succession.
  3. Specify the maximum number of times the SPF algorithm can run in succession. After the maximum is reached, the hold-down interval begins.
Policies tab

Import Policy

The import policy enables you to control which routes learned from an area are used to generate summary link-state advertisements (LSAs) into other areas.

Click Add to add an import policy.

Click Move up or Move down to move the selected policy up or down the list of policies.

Click Remove to remove an import policy.

Export Policy

The export policy enables you to specify which summary LSAs are flooded into an area.

Click Add to add an export policy.

Click Move up or Move down to move the selected policy up or down the list of policies.

Click Remove to remove an export policy.

Traceoptions tab

File Name

Specifies the name of the file to receive the output of the tracing operation.

Enter a name.

Number of Files

Specifies the maximum number of trace files.

Type a value.

File Size

Specifies the maximum size for each trace file.

Type a value.

World Readable

Specifies whether the trace file can be read by any user or not.

Select True for it to be read by any user.

Select False if you don’t want it read by any user.

Flags

Specifies the tracing operation to perform.

Specify one or multiple flags.