Finisar Surveyor, User Manual

Page: 342 / 454

11-8
Surveyor
User’s Guide
Setting this value to a high number may help in identifying a wider range of
calls, but may also decrease performance. The default settings is recommended
unless you are trying to identify non-standard or partial calls as possible.
Multi-QoS Performance Optimization
Real-time monitoring of calls is supported, but the utilization of the network will
greatly affect the calls that you see in the Multi-QoS tables. The monitor function
can record all calls at 10 Mbps. For 100 or 1000 Mbps networks, high network
usage will result in missed packets and therefore missed calls. Note that all traffic is
captured in capture mode, regardless of the network utilization.
You can increase the monitoring performance of Multi-QoS by disabling the
monitoring of other statistics for a specific module.
To enable this feature from Summary View, select
Configuration
→
Module
→
Settings...
. Select the
Modes
tab and enable the check box for
Monitor MQoS Only
.
The Multi-QoS performance option can also be set in Detail View for a specific
module. Select
Configuration
→
Settings...
and select the
Modes
tab.
Call Filtering with Multi-QoS
Multi-QoS has a feature for quickly creating a filter from tables. Click the right
mouse button on any call in the table to see the filter options supported for this type
of call. This feature only works in capture mode after the analyzer is stopped.
For calls in Range Summary tables and the All Calls table, the menu has a
Single
Call Display Filter
option. You can create and apply a display for the selected call
without having to go to the filter window. This saves several steps in the filter
creation process. You can also create a single call display filter from the Call Details
window by clicking on
Single Call Display Filter
.
Return to Capture View to see the subset of packets created by applying the display
filter.
The filter created through this process will filter all the internet traffic to and from
the source and destination IP addresses for the selected call. The filter will collect all
RAS, Q.931, and H.245 call set-up packets for this call. If the call includes a
gatekeeper, these packets will be included as well.
See “Filtering on Single Channels” on page 11-29 for information on filtering
channels within calls.