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Monitoring OSPF Routing Information

 

Purpose

Note

This topic applies only to the J-Web Application package.

Use the monitoring functionality to monitor OSPF routing information on routing devices.

Action

To view OSPF routing information in the J-Web interface, select Monitor > Routing > OSPF Information.

To view OSPF routing information in the CLI, enter the following CLI commands:

  • show ospf neighbor

  • show ospf interface

  • show ospf statistics

Meaning

Table 94 summarizes key output fields in the OSPF routing display in the J-Web interface.

Table 94: Summary of Key OSPF Routing Output Fields

Field

Values

Additional Information

OSPF Interfaces  

Interface

Name of the interface running OSPF.

 

State

State of the interface: BDR, Down, DR, DRother, Loop, PtToPt, or Waiting.

The Down state, indicating that the interface is not functioning, and PtToPt state, indicating that a point-to-point connection has been established, are the most common states.

Area

Number of the area that the interface is in.

 

DR ID

Address of the area's designated device.

 

BDR ID

Address of the area's backup designated device.

 

Neighbors

Number of neighbors on this interface.

 

Adjacency Count

Number of devices in the area using the same area identifier.

 

Stub Type

The areas into which OSPF does not flood AS external advertisements

 

Passive Mode

In this mode the interface is present on the network but does not transmit or receive packets.

 

Authentication Type

The authentication scheme for the backbone or area.

 

Interface Address

The IP address of the interface.

 

Address Mask

The subnet mask or address prefix.

 

MTU

The maximum transmission unit size.

 

Interface Cost

The path cost used to calculate the root path cost from any given LAN segment is determined by the total cost of each link in the path.

 

Hello Interval

How often the routing device sends hello packets out of the interface.

 

Dead Interval

The interval during which the routing device receives no hello packets from the neighbor.

 

Retransmit Interval

The interval for which the routing device waits to receive a link-state acknowledgment packet before retransmitting link-state advertisements to an interface’s neighbors.

 
OSPF Statistics  
Packets tab

Sent

Displays the total number of packets sent.

 

Received

Displays the total number of packets received.

 
Details tab

Flood Queue Depth

Number of entries in the extended queue.

 

Total Retransmits

Number of retransmission entries enqueued.

 

Total Database Summaries

Total number of database description packets.

 
OSPF Neighbors

Address

Address of the neighbor.

 

Interface

Interface through which the neighbor is reachable.

 

State

State of the neighbor: Attempt, Down, Exchange, ExStart, Full, Init, Loading, or 2way.

Generally, only the Down state, indicating a failed OSPF adjacency, and the Full state, indicating a functional adjacency, are maintained for more than a few seconds. The other states are transitional states that a neighbor is in only briefly while an OSPF adjacency is being established.

ID

ID of the neighbor.

 

Priority

Priority of the neighbor to become the designated router.

 

Activity Time

The activity time.

 

Area

Area that the neighbor is in.

 

Options

Option bits received in the hello packets from the neighbor.

 

DR Address

Address of the designated router.

 

BDR Address

Address of the backup designated router.

 

Uptime

Length of time since the neighbor came up.

 

Adjacency

Length of time since the adjacency with the neighbor was established.