132 CHAPTER 9: PROBLEM SOLVING
Cannot ping or Telnet to the Layer
3 Module VLAN 1 IP address.
Switch or stack does not have an IP
address.
Configure the Switch, or stack, that
contains the Layer 3 Module to
have a management IP address, and
then ensure that the Layer 3
Module also has an IP address. Both
addresses must be on the same
network and subnet.
You can configure the Switch
management IP address using the
ip interface define
command on the Switch.
Switch management IP address is
on a different network from Layer 3
Module IP address.
The Layer 3 Module VLAN 1 IP
address must be on the same
network and subnet as the Switch
management IP address.
You can change the Switch
management IP address using the
ip interface define
command on the Switch.
Layer 3 Module non-volatile
configuration is in an invalid state,
and the module is continually
rebooting.
Follow the procedure in “Resetting
the Module to the Factory Default
Values” in Appendix B.
bridge vlan summary on the
Layer 3 Module does not show any
of the VLANs that have been
defined on the Switch, apart from
VLAN 1.
Layer 3 Module is not receiving
VLAN update messages from the
Switch.
The Switch does not have a
management IP address, or has a
management IP address that is not
on the same subnet as the Layer 3
Module VLAN 1 IP address.
Configure the Switch to have an IP
address on the same network as the
Layer 3 Module VLAN 1 IP address.
You can do this using the ip
interface define command
on the Switch.
After removing a VLAN from the
Switch, the VLAN remains in the
bridge vlan summary on the
Layer 3 Module.
Layer 3 Module only receives
updates about VLAN changes every
30 seconds.
Wait for at least 60 seconds for the
VLAN update to be sent to the
Layer 3 Module from the Switch,
and then try again.
(continued)
Table 36 Identifying Problems with the Layer 3 Module (continued)
Problem Cause Solution
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