Hitachi GR2000 Series - Manual (Page 208)

Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview
7-42 GR2K-GA-0015
Ver. 07-02
If there is no problem, check the status of this device’s DHCP client in regards to 2
above.
If the device appears to have a problem, check the configuration defining information
in regards to 1 above.
If there is no apparent problem, refer to 3 and 4 above. Check for the connection of
the network devices including HUB and cables and the contents of the setting for
DHCP server and relay agent.
See Table 7-14, DHCP Client Communication Failures Troubleshooting Chart, for a
flowchart for troubleshooting these failures.
Figure 7-14 DHCP Client Communication Failures Troubleshooting Chart
(a) Inspection of Log Message and Interface
One possible reason why the IP address would not be allocated to this device’s DHCP
client interface is an interruption of communication between the DHCP client and
the DHCP server. 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 Section
7.5.1, “Communication cannot be done or communication is disconnected” on page
7-23.
(b) Confirmation of the Status of the DHCP Client of this Device
An IP address that cannot be allocated from the DHCP server could be an
impediment in this device’s DHCP client. Items to be confirmed are given below:
< No IP address can be allocated to DHCP clients.>
Confirmation of impediments and the status 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 7.5.1
The status due to the “show dhcp lease” and
“show dhcp client statistics” commands
Follow the procedure in Section 7.4,
“Communication failure in network
interface”.
Confirmation of the network
configuration and the status of the
DHCP server device.
Confirm the DHCP server
at the connection. Confirm the DHCP relay
agent at the connection. Confirm the configuration
defining information.
A problem is
present in this
device.
No problems with this
device. (No relay
agent is available.)
No problems with this
device.
No problems with this device.
Via the relay agent.
up
down