OSPF Summary

To access the OSPF Summary section, navigate to Routers > Router Name > Insights page. Then click the OSPF tab in the Routing Protocols section.

The OSPF tab in the Routing Protocols section displays the OSPF summary information of a router. OSPF is an interior gateway protocol that routes packets within a single autonomous system (AS).

From the OSPF section, you can view OSPF summary information such as status of OSPF neighbors and their interfaces, address of the designated router, address of the backup designated router and so on.

The widgets in the OSPF section display the following:

Neighbors─Number of OSPF neighbors of the router.
Down Neighbors─Number of OSPF neighbors that are down. A down neighbor is a router in the initial state of a neighbor conversation. It indicates that no recent information has been received from the neighbor.
Interfaces─Total number of interfaces from all OSPF neighbors.
Down Interfaces─Number of interfaces of the router that are in the initial interface state. In this state, the lower-level protocols have indicated that the interface is unusable. No protocol traffic will be sent or received on such an interface.

Neighbors

The Neighbors table displays detailed information about each OSPF neighbor of the router. You can view details such as the state of the neighbor, address, interface through which the neighbor is reachable, priority and so on, from this table.

The Neighbors table displays the OSPF neighbor summary in an easy-to-understand tabular format. Table 1 describes the fields in the Neighbors table. OSPF neighbors that are in state Full are represented in green and the neighbors in any other state are represented in red in the table.

You can sort the columns in the table by the header. Click any column header to sort its entries. You can filter the columns that are displayed in the Neighbors table to show specific fields. Click the table setting icon to choose the columns that you want to be displayed.

Note:

The Neighbors table is updated every three minutes. Click the refresh icon to trigger a manual refresh, if needed.

Table 1: Fields in the Neighbors Table
Field	Description
State	State of the neighbor: Attempt—Indicates that no recent information has been received from the neighbor. This state is valid only for neighbors attached to nonbroadcast networks. Down—Initial state of a neighbor conversation. It indicates that no recent information has been received from the neighbor. Exchange—Router is describing its entire link-state database (LSDB) by sending database description packets to the neighbor. Each packet has a sequence number and is explicitly acknowledged. ExStart—First step in creating an adjacency between two neighboring routers. The goal of this step is to determine which router is primary, and to decide upon the initial DD sequence number. Neighbor conversations in this state or greater are called adjacencies. Full—Neighboring routers are fully adjacent. These adjacencies appear in router LSAs (Link-State Advertisements) and network LSAs. Init—A Hello packet has recently been seen from the neighbor. However, bidirectional communication has not yet been established with the neighbor. This state might occur, for example, because the router itself did not appear in the neighbor's Hello packet. Loading—Link-state request packets are sent to the neighbor asking for the more recent LSAs that have been discovered (but not yet received) in the Exchange state. 2Way—Communication between the two routers is bidirectional. This state has been assured by the operation of the Hello Protocol. The (Backup) designated router is selected from the set of neighbors in state 2Way or greater.
Address	IP address of the neighboring router’s interface attached to the network.
Interfaces	Interface through which the neighbor is reachable.
Neighbor ID	OSPF Router ID of the neighboring router.
Priority	Priority of the neighbor to become the designated router.
Dead Interval	The number of seconds before which the router’s neighbors will declare it down, when they stop hearing the router’s Hello Packets. This number is advertised in the Hello packets sent out of this interface.

Interfaces

The Interfaces table displays the status of all the OSPF interfaces of the router in an easy-to-understand tabular format. Table 2 describes the fields in the Interfaces table. OSPF interfaces that are in the state Down are represented in red and the interfaces in any other state are represented in red in the table.

You can sort the columns in the table by the header. Click any column header to sort its entries. You can filter the columns that are displayed in the Interfaces table to show specific fields. Click the table setting icon to choose the columns that you want to be displayed.

Note:

The Interfaces table is updated every three minutes. Click the refresh icon to trigger a manual refresh, if needed.

Table 2: Fields in the Interfaces Table
Field	Description
State	State of the interface: BDR Down DRother Loop PtToPt Waiting
Interface	Name of the interface running OSPF version 2.
Area	The ID of the area to which the attached network belongs. All routing protocol packets originating from the interface are labeled with this Area ID.
DR ID	IP address of the area's designated router.
BDR ID	IP address of the backup designated router for a particular subnet.
Neighbors	Number of neighbors on the interface.

For more information on OSPF configuration on Juniper routers, see Understanding OSPF Configurations.

ON THIS PAGE

OSPF Summary

Neighbors

Interfaces