Hitachi GR2000 Series Manual do Utilizador descarregar pdf (Página 196)

Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview

7-30 GR2K-GA-0015

Ver. 07-02

Step 3. A packet is discarded by queue control when the total number of discarded

frames (total discarded frames due to queue overflow) is more than one.

In this example, since the total number of discarded frames is 2375, a

packet is discarded by queue control.

7.5.1.9 Inspection of Null Interface Definition Information

When the packet is not discarded although communication to a specific network or

terminal is restricted by the Null interface, the Null interface configuration definition

may be incorrect. Ensure that the Null interface is correctly set up, in accordance

with the following procedure:

Step 1. Using the show interface ipv4-unicast command, ensure that the Null

interface status is “up.”

Step 2. Ensure that the Null interface is correctly defined to the current

configuration information.

Step 3. Use the show ip route command to inspect the route information that this

device has obtained. Ensure that the static route information has been

correctly defined.

Step 4. Using the show ip interface command, ensure that the packet is discarded on

the Null interface.

7.5.1.10 Inspection of Policy Routing Definition Information

When communication is disabled despite no physical failure in this router and the

correct route information, there is a possibility that a failure on the policy routing

output interface is causing packets to be discarded.

To check for such a possibility, follow the procedure below:

Confirm the status of the Null interface by executing the

show ip interface ipv4-unicast command.

Confirm whether the setting is correct in the Null interface of the

operating configuration defining information.

Confirm the route information by executing

the show ip route command.

Confirm that the packet has been discarded on the Null interface

by executing the show ip interface command.

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Hitachi GR2000 Series Manual do Utilizador Página 196