NEC IP8800/S6300 manual If Duid of this system conflicts with other system, Reproducing the Duid

3. Troubleshooting Functional Failures in Operation

Table 3-34: Retention of Route Information to Prefix Distribution Target

Retention Information			Event and Retention
Concerning Prefix
	Server Function Restart		Routing Manager Restart	This System Restart
	Command	Server
	Execution	Failure
Route information to client	Y	Y/N	Y	N

(Legend)

Y: Guaranteed

Y/N: Not guaranteed (each status information may be retained)

N: Not guaranteed (re-setting required because of initialization)

Note

Route management functions required when setting route information to prefix distribution target.

For other failures, see "3.9.1 Communication Is Disabled or Is Disconnected."

(a) Checking route information

When using the automatic route setting feature to the prefix distribution targets from the IPv6DHCP server, the route information after prefix distribution can be checked using the show ipv6 route command with "-s" parameter specified.

Figure 3-15: Check for Routing Information Using Operation Command

> show ipv6 route -s
Total: 10routes	Next Hop	Interface	Metric	Protocol	Age
Destination
3ffe:1234:5678::/48	::1	tokyo	0/0	Static	45m
<Active Gateway	Dhcp>	osaka	0/0	Static	23m
3ffe:aaaa:1234::/48	::1
<Active Gateway	Dhcp>
:
>

(b) Reconfiguring route information

When using automatic route information setting feature of the IPv6DHCP server of this system to prefix distribution target, if an event occurs that deletes route information due to a failure, etc., restoration requires the redistribution of prefixes. Execute operations for the re-acquisition of prefix information by the client system.

(3) If DUID of this system conflicts with other system

If DUID conflicts in the configurations with 2 or more IPv6DHCP servers including this system in the same network, reconfigure the DUID in this system according to the following procedure.

(a) Deleting the file containing DUID information

The DUID of this system is stored in /usr/var/dhcp6/dhcp6s_duid. Explicitly delete the file from the operation command line using rm.

(b) Reproducing the DUID

After deleting the DUID file, restart the server using the restart ipv6 dhcp server command or add an IPv6DHCP server setting to the configuration information. The IPv6DHCP server acquires the MAC address of the IPv6 interface used as IPv6DHCP server interface when restarted and generates new DUID based on that information and time information.

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