The following errors may appear on the Managed Bandwidth Usage page. They are related to a Session Manager instance being unreachable from System Manager. The diagnosis and resolution steps are similar:

• Network fragmentation has occurred. Bandwidth limits are not being enforced. This error indicates that communication is being disrupted among the cluster of Session Managers in the core (non-Branch).

• Unable to access status information for xxxx — cannot connect to server, internal error. The Session Manager instance is unreachable from System Manager.

• Data displayed may be inaccurate due to connection problems to one or more Session Managers. If one of the Session Managers is not accessible by System Manager, the values may not be accurate.

System Manager may be able to communicate with the Session Manager instance, but the Session Manager instance itself may be isolated from the rest of the core members. During this period, total bandwidth management in the core is unable to be properly enforced.

Causes

Possible causes include:

• An upgrade is in progress among the Session Managers.

• Session Manager is provisioned administratively but is not actively up and running.

• Misadministration could cause the Session Manager to appear to be administered, but the Session Manager is unreachable.

• There is a true network error within the core where connectivity is limited or unavailable between certain Session Managers.

• There is an error among the Session Managers that has limited their ability to maintain a full cluster of core Session Manager nodes.

Solutions

1. The condition should be transient and ultimately resolved on its own if network connections are being limited or disrupted, or if Session Manager is being upgraded.

2. If the condition lasts for longer than 10 minutes, check the administration and verify it is correct.

3. If the condition still exists, contact an Avaya service representative to help resolve the problem.