NEC IP8800/S6600 Checking unicast routing information, Checking DHCP/BOOTP setting information

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

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3. Troubleshooting Functional Failures in Operation

(6) Checking unicast routing information

Check the route information acquired by this system if communication is not possible even when the address resolution with the neighboring system is achieved, or if communication is disabled in the midway to the other party during IPv4 unicast communication, or if the route to the other party is abnormal. Use the following procedure:

1.Log in to the system.

2.Execute the show ip route command to check the route information acquired by this system.

3.For IP8800/S6700, IP8800/S6600, and IP8800/S6300, check to see if packets are discarded because of the Null interface. If the route information sending interface resulting a communication failure is null0, packets are discarded because of the Null interface. Review the setting conditions for the static routing function in the configuration.

4.Go to "3.7 IPv4 Unicast Routing Communication Failure" if the route information on the failed interface is missing in the route information acquired by this system or if the next hop address is invalid.

5.If the route information acquired by this system contains the route information on the failed interface, the following functions set for the interface may have problem. Check these functions.

DHCP/BOOTP function

Go to "(7)Checking DHCP/BOOTP setting information."

Filtering/QoS function

Go to "(8)Checking filtering/QoS setting information."

(7) Checking DHCP/BOOTP setting information

When the relay function or the server function of DHCP/BOOTP on this system provides IP addresses to the neighboring system, there is possibility that IP addresses are not correctly assigned to the neighboring system.

Check to see the settings of the relay function or the server function. For the procedure, see "3.23.1 Checking Filtering/ QoS Setting Information."

(8) Checking filtering/QoS setting information

Certain packets may have been discarded by filtering, or packets may have been discarded through bandwidth monitoring, discarding control, or shaper of the QoS control. Review if the conditions of filtering and QoS control in the configuration have been set up correctly and if bandwidth monitoring, discarding control, or shaper has been set up appropriately for system operation. For the procedure, see "3.23.1 Checking Filtering/QoS Setting Information."

(9) Checking option license OP-NPAR [OP-NPAR]

If no information is displayed by the show ip interface command though the interface is set to VRF interface and configured, there is possibility that option license OP-NPAR is unregistered or invalid. Check the status of option license on this system by using the show license command.

1.Log in to the system.

2.Check to see the license software and the enabled options by using the show license command.

3.If OP-NPAR does not appear in the license software, it indicates any license key for OP-NPAR has not been registered yet. Register the license key for OP-NPAR.

4.When OP-NAPR is displayed in license software but it is not displayed as an enabled option, the hardware configuration of this system might not support OP-NPAR. Review the hardware configuration. For more information about the hardware configuration, see the manual "Configuration Settings, Vol. 1."

5.When this system hardware configuration supports OP-NPAR but the OP-NPAR is not displayed as an enabled option, use the reload command to restart the system, which will enable the option license.

6.When OP-NPAR appears as an enabled option, see step 4 or later in "(2)Checking interface status."

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NEC IP8800/S6600, IP8800/S3600, IP8800/S2400 Checking unicast routing information, Checking DHCP/BOOTP setting information