3Com Traffix Transcend Traffix Manager User Manual page 132

132 A C: A
PPENDIX GGREGATING
D
EVICES
If layer 2 above the name is selected, the device
office.acme.com is aggregated into the device representing
.com.
If a network device does not have the selected layer above the
name, then the device is aggregated into a device representing the
highest DNS layer possible. office.acme.com does not have a
layer three above its name and would therefore be aggregated into
the device representing the DNS layer .com.
Aggregate from tail allows you to specify a DNS layer above the
end of the device name. A network device that has a non-local
DNS domain is aggregated into a Traffix Manager device
representing this DNS layer.
For example, if DNS layer 2 is selected, the device
mydevice.acme.com is aggregated into the device representing
the DNS domain acme.com.
Discard Any network device that has a non-local DNS domain is
discarded immediately, and no data for that device is collected.
Setting a Maximum Device Limit
You can specify a device limit of 100,000 devices. This allows you to
monitor local devices in detail, but reduce the detail of data kept about
non-local devices. This setting is treated as a "hint" by Traffix Manager: if
new local devices are seen after this user-defined limit is reached, the
setting is increased gradually, up to the maximum version limit, to allow
for the new local devices to be stored.
This prevents unnecessary loss of information about local devices.