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3. Troubleshooting Functional Failures in Operation
74
Figure 3-14: IPv6DHCP Server Failure Analysis Procedure
(a) Checking the log and interface
Communication may be interrupted by NIM or interface failure (or damage) or failure in the neighboring system.
Check the log displayed by this system and the up/down status of interfaces using the show inpv6 interface
command. For the procedure, see "3.9.1 Communication Is Disabled or Is Disconnected."
(b) Checking the status of the IPv6 DHCP server in this system
1. Checking if the IPv6DHCP server service is running
Confirm that information can be retrieved from the IPv6DHCP server daemon using the show ipv6 dhcp
server
statistics command. If the show ipv6 dhcp server statistics command produces the following
output, reset
IPv6DHCP server using configuration command service ipv6 dhcp.
[Execution results]
> show ipv6 dhcp server statistics
> < show statistics >: dhcp6_server doesn't seem to be running.
2. Checking the remaining distributable prefixes
Verify the operation log using the show logging command.
No physical failure message exists.
A physical failure message exists.
Check the Up/Down status of the interface using the
show ipv6 interface command.
see the manuals "Message Log Reference" and
"3.9.1 Communication Is Disabled or Is Disconnected"
and perform the actions described in [Action] associated
with each log message.
Check the status of IPv6DHCP server.
Go to "3.4 Network Interface Communication Failure."
The settings of this system
are correct.
The settings of this system
are incorrect.
Check if the prefix has been distributed
redundantly using the show ipv6 dhcp binding
command.
Follow the configuration procedure described in this
chapter.
Not redundantly distributed.
Redundantly distributed.
Verify if the status and the settings of client.
Follow the procedure for restoring from duplicate
distribution described in this chapter.
<Unable to distribute the configuration.>