Network Instruments WAN Probe Kit - Manual (Page 41)

Running Observer Software with the WAN Probe 35
Top Talkers
Just as in standard Observer, Top Talkers shows the IP and MAC address of stations on
your network sorted by volume of traffic generated and received. In WAN Observer, the
MAC Address tab shows DLCIs sorted by volume of traffic. Also, the sorting and charting
statistical criteria (such as percentage of packets, packets per second, etc.) that apply to
WAN is a subset of those available for standard network analysis.
WAN Filtering
In addition to the standard Observer packet filtering rules (station address, pattern
matching, etc.), there are two WAN-specific filtering rules available for use with WAN
probes:
• DLCI Address, which lets you enter the number of the DLCI address you wish
include or exclude.
• WAN Conditions, which let you include or exclude frames based on flow direction,
forward and backward congestion, and discard eligibility.
To create a WAN filter rule, choose Actions->Filter Setup for Selected Probe. The
default filter rule (any address<-->any address) is displayed. Select and right click on the
rule to display the popup menu: