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Monitoring OSPF Routing Information

Purpose

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

Table 1: 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.