User guide

Useful Information and References 207
Useful Information
and References
The following section provides useful information and references when
using Reports in 3Com Network Administrator.
VLAN-unaware
Devices
A VLAN-unaware device is:
■ A device that does not support VLANs, or
■ A device that supports VLANs but has no VLANs configured, or
■ A device that supports VLANs, has exactly one VLAN configured and
has all ports using untagged traffic for that VLAN. This enables 3Com
Network Administrator to identify factory default switches with all
ports on the ‘default’ VLAN.
VLANS and the
Switch 4007
The configuration of VLANs on the Switch 4007 differs from that on
other device types. On the 4007, VLANs are created on each individual
module in the chassis, i.e. VLANs cannot be created device-wide as with
stackable devices. In order for a VLAN to span modules, the backplane
ports of the modules must be members of the VLAN. However, if the
backplane ports of a module are not members of a VLAN, this VLAN is
effectively local to this module. Another completely separate VLAN can
be defined on another module with the same VLAN ID.
Key Considerations The following section provides some useful advice when using the
Reports feature in 3Com Network Administrator.
Report Information
Out-of-Date
The information that appears in Reports is based on information held in
the current inventory file. If changes have occurred since the last refresh
operation, the report will contain out-of-date information. The one
exception to this is the Prioritization Configuration report, which uses
SNMP queries on your network devices to generate this report.
Disk Usage Generated reports are not aged or deleted automatically in any way.
Therefore, over a period of time, the number of reports stored on disk will
build up. One generated report will take up approximately 4K to 5K,
depending on the number of devices reported on. You can delete
generated reports from the Reports > History tab.
3Com Network Administrator for HP OpenView.book Page 207 Wednesday, November 12, 2003 2:33 PM