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3. Troubleshooting Functional Failures in Operation
107
3.13.3 Communication with VRRP Configuration in IPv6 Network Is
Disabled
Isolate the problem according to the failure analysis methods shown in the table below if communication with the
VRRP configuration is disabled.
Table 3-62: VRRP Failure Analysis Method
11 Execute show vrrpstatus command
with "detail" parameter specified to confirm
that the virtual router status is not "Initial."
If the virtual router is set to "Initial," check the following items:
• If the current priority is not set to zero (0), delete the non-operation factors
displayed in the "Admin State" column. (For non-operation factors, see
"Operation Commands.")
• Execute the show logging command to check the log, and if "The VRRP
virtual MAC address entry can't be registered at hardware tables" is displayed,
setting up the hardware MAC address table is failed. Delete the configuration
for the current virtual router and reconfigure the configuration with a different
virtual router number, or modify the ID of the VLAN where the virtual router is
set up, then the virtual router may operate. [IP8800/S3600]
If the virtual router is not set to "Initial," check the operation of the remote system
constituting the same virtual router.
No. Troubleshooting Steps and Command Action
1
Check the status of the remote systems and
this system constituting a same virtual router
and confirm that one system is used as a
master router and other systems are used as
backup routers.
For the configuration constituting a single virtual router, if one system is master
and the other systems are backup, check the following:
• If terminals are connected under the virtual router without other routers between
them, confirm that the virtual IP address of the virtual router is configured as a
default gateway in the network settings of each terminal.
• Check for the routing information in devices on the communication paths
including this system.
Go to No. 2 if there is no problem in terminal setting and in the route information
in systems on the communication route.
Go to No. 3 if the status of a virtual router is not correct.
2
Execute the show vlan command with
"detail" parameter specified to confirm that
the status of the physical port within the
VLAN where the virtual router is set up is
set to "Forwarding."
• If the physical port is set to "Blocking," the communication has been interrupted
temporarily due to the STP topology change or the like. If this is the case, wait
for a while and check again to see if the physical port is set to "Forwarding." If
the status of the physical port does not change to "Forwarding" after some time,
check the configuration and physical network structure.
• If the physical port is "down," it is not physically connected. Check to see if
connectors and/or cables are connected correctly.
If the status of the physical port is "Forwarding," check for the target network for
the high traffic.
3 Confirm that both remote system and this
system constituting a virtual router are not set
to master.
Go to No. 4 if multiple virtual routers are set to master.
Go to No. 8 if only one virtual router is set to master.
4 Check the communication between the
routers constituting the virtual router using
the ping ipv6 command with the actual
IPv6 addresses.
If the routers constituting the virtual router cannot communicate with each other
with the actual IPv6 addresses, check the physical network configuration.
Go to No. 5, if the communication between routers constituting the virtual router
is possible by issuing the ping ipv6 command with the actual IPv6 addresses.
No. Troubleshooting Steps and Command Action