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Controlling Designated Router Election

At designated router election, the router priorities are evaluated first, and the router with the highest priority is elected designated router.

By default, routers have a priority of 128. A priority of 0 marks the router as ineligible to become the designated router. To configure a router so it is always the designated router, set its priority to 255.

To change the priority of a Services Router to control designated router election:

  1. Navigate to the top of the configuration hierarchy in either the J-Web or the CLI configuration editor.
  2. Perform the configuration tasks described in Table 121.

Table 121: Controlling Designated Router Election

Task

J-Web Configuration Editor

CLI Configuration Editor

Navigate to the OSPF interface address for the Services Router. For example, navigate to the ge-/0/0/1 level in the configuration hierarchy.
  1. In the J-Web interface, select Configuration>View and Edit>Edit Configuration.
  2. Next to Protocols, click Edit.
  3. Next to Ospf, click Edit.
  4. Under Area id, click 0.0.0.3.
  5. Under Interface name, click ge-0/0/1.

From the [edit] hierarchy level, enter

edit protocols ospf area 0.0.0.3 interface ge-0/0/1

Set the Services Router priority to a value between 0 and 255—for example, 200. The default value is 128.
  1. In the Priority box, type 200.
  2. Click OK.

Set the priority value:

set priority 200

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