Product specifications

Switch Infrastructure Diagnostics
164
The following can result in problems reported in the State Machine Test:
• A Stack Collision prevents the State Machines from reconciling successfully. Check the results of the Collision
Test.
• If another error has occurred during the State Machine Test, restart the process by disconnecting the stacking
cable, and then reconnecting it. If the error persists, reboot the switch. If the error still persists, reboot both
switches on either side of the stacking cable. Finally, try to reboot all switches on that side of the stack.
Stack Serial Numbers
This test reports the serial numbers of switches that are expected to be part of the stack from the reporting switch’s
perspective.
When the switches reported here are not the same as the switches reported by the Stack MAC Addresses Test, there
could be problems reaching a switch that is supposed to be part of the stack. Sometimes this information can be
verified by a failure in the Ping Stack Test.
The test can also report two chassis serial numbers with the same chassis ID (like an index). This could indicate a
collision.
Module Assignment
This test makes sure that all switches have been assigned Module IDs correctly. This information is necessary for
proper switch communication. If a problem is reported, your only option is to reboot the switch. If the problem
persists, contact Avid Personnel for additional help.
Collision
Collisions result when two switches have conflicting configuration information. This can happen when connecting a
new switch to a stack that has an IP address or chassis ID that conflicts with a switch that is already in the stack. To
correct this, perform an “Add” from a switch that is already a part of the stack, and configure the new switch with
non-conflicting information.
Performance
Link Aggregation Configuration
This test checks that Link Aggregation Configuration information is consistent among different processes in the
switch. If a problem is reported here, try configuring link aggregation again through the switch Agent web page.
The test also checks each port that is a member of a link aggregation group to make sure that the link is up.
Link Aggregation Load Balancing
This test is marked informational. Therefore, no determination of PASS/WARN or FAILED will be made regarding
the test result. In order to provide complete Link Aggregation Load Balancing results for the entire system, every
switch that is a member of a link aggregation group must report information that is consistent with other switches in
the system. If data is not consistent, or a result from a switch is missing, then the total data transmitted and received
for all link aggregation groups cannot be determined. Review the data displayed carefully, and make sure that:
• The data transmitted and received is balanced between all port members of the link aggregation group. If system
results are complete, then each port will report its percentage of data transmitted and received with regard to the
total amount of data transmitted and received for that link aggregation group.
• If system results are not complete, then correct any other issues reported by Switch Diagnostics, and run Switch
Diagnostics again.