IPv4 Unicast Routing Communication Failure

3. Troubleshooting Functional Failures in Operation

3.7IPv4 Unicast Routing Communication Failure

3.7.1No RIP Routing Information Exists

Isolate the problem according to the failure analysis method listed below if RIP route information does not exist in the displayed route information acquired by this system.

Besides, when the upper limit of routing is set by configuration command maximum routes, see "3.7.4 No Routing Information Exist [OP-NPAR]." [OP-NPAR]

Table 3-18: RIP Failure Analysis Method

No.	Troubleshooting Steps and Command	Action

1	RIP neighboring information is displayed.	Go to No. 2 if the interface of a neighboring router is not displayed.
	show ip rip neighbor
	show ip rip neighbor	Go to No. 3 if the interface of a neighboring router is displayed.


2	Check to see if the RIP setting is correct in the	Go to No. 3 if the configuration is correct.
	configuration.
	configuration.	Correct the configuration if it is not correct.
		Correct the configuration if it is not correct.

3	Confirm that the routing are not filtered by	Check to see if the neighboring router advertises the RIP route.
	referring to the configuration.
	referring to the configuration.	Correct the configuration if it is not correct.
		Correct the configuration if it is not correct.

3.7.2No OSPF Routing Information Exists

Isolate the problem according to the failure analysis method listed below if OSPF route information does not exist in the displayed route information acquired by this system.

Besides, when the upper limit of routing is set by configuration command maximum routes, see "3.7.4 No Routing Information Exist [OP-NPAR]." [OP-NPAR]

Table 3-19: OSPF Failure Analysis Method

No.	Troubleshooting Steps and Command	Action

1	Check the interface status of OSPF.	Go to No. 3 if the interface status is DR.
	show ip ospf interface <IP Address>
	show ip ospf interface <IP Address>	Go to No. 2 if the interface status is BackupDR or DR Other.


		Execute the command again after a certain period if the interface status is
		"Waiting." Go to No. 1.

2	Check the status of a neighboring router of DR	Go to No. 4 if the status of the neighboring router of DR is other than Full.
	from Neighbor List.
	from Neighbor List.	Go to No. 5 if the status of the neighboring router of DR is Full.


3	Check the status of all neighboring routers from	Go to No. 4 if the status of some neighboring routers is other than Full.
	Neighbor List.
	Neighbor List.	Go to No. 5 if the status of all neighboring routers is Full.


4	Check to see if the OSPF setting is correct in	Go to No. 5 if the configuration is correct.
	configuration.
	configuration.	Correct the configuration if it is not correct.
		Correct the configuration if it is not correct.

5	Check the OSPF routes that have been learned.	Go to No. 6 if the route is set to "InActive."
	show ip route all-routes
	show ip route all-routes	If no route exists, check to see if the neighboring router advertises the OSPF

		route.

6	Confirm that the routing are not filtered by	Check to see if the neighboring router advertises the OSPF route.
	referring to the configuration.
	referring to the configuration.	Correct the configuration if it is not correct.
		Correct the configuration if it is not correct.

IP8800/S6700, IP8800/S3600, IP8800/S6600, IP8800/S6300, IP8800/S2400 specifications

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NEC IP8800/S6700 IPv4 Unicast Routing Communication Failure, No RIP Routing Information Exists

Models: IP8800/S6700 IP8800/S3600 IP8800/S6600 IP8800/S6300 IP8800/S2400