Hitachi GR2000 Series - Manual (Page 219)

Troubleshooting
GR2K-GA-0015 7-53
Ver. 07-02
Figure 7-17 DNS Relay Communication Failures Troubleshooting Chart
7.5.5.1 Inspection of Log Message and Interface
Impediment (or breakage) of the hardware (RP/NIF/Line) or impediment in the
adjacent device may be seen as the cause of the communication obstruction. Inspect
the log messages shown in the router and the interface up/down status by the
show
ip interface command. For the procedure, refer to Subsection 7.5.1, “Communication
cannot be done or communication is disconnected” on page 7-23.
7.5.5.2 Confirmation of this Device’s DNS Relay State
(a) Confirmation of the DNS Relay Demon Actuation
Use the show dns-relay command to confirm whether information can be derived from
the DNS relay demon. If the result of executing the show dns-relay command is as
shown below, re-set the relay function by using the dns-resolver configuration
definition command.
[Result of the execution]
> show dns-relay
Can not execute this command.
No DNS relay configuration.
<Cannot communicate>
Confirmation of impediment occurrence by
using the show logging command.
Physical error
log not found Physical error
log found
Inspect interface up/down status with
show ip interface command.
Follow the procedure for each log message
according to the Operation log and MIB, and
follow the procedure for troubleshooting on IP
communication failures according to
Section 5.2.
Confirm the DNS relay status by using the
show dns-relay command.
Follow the procedure
in Section 5.6.
No problems in the
setting of this device. There is a problem in the
setting of this device.
Confirm the name server.
Confirm the configuration
definition in this chapter.
up
down