System information

326 Switched Observer
automatically scale from modem speeds of 1000 bits/second to gigabit speeds of 1000
megabits/sec.
Y-axis values automatically to the current (within the viewable time frame) port or
aggregate switch load. Typical network speeds are represented by the following values:
This metric is a good value to determine how efficiently you are utilizing your switch.
See “Bandwidth Utilization” on page 69.
Internet Observer – Switched
In switched mode, Internet Observer functions identically to the non-switched Internet
Observer.
See “Internet Observer Mode (Internet Patrol, Pairs Matrix, IP Subprotocols)” on page 76.
Network Errors by Station – Switched
The Switched Network Errors by Station mode will identify and display Ethernet error
packets broken down by switch port source of the error and the type of error packet. To
identify the specific station on a port that has multiple addresses, a separate Observer or
Probe would need to be installed on that downstream segment.
The ability to track Ethernet errors by station requires the use of both a Network
Instruments ErrorTrak™ driver, a certified network adapter card, and a switch that will
forward error packets when the port is being monitored.
Once the switched Errors by Station is running, the display is identical to the standard
(non-switched) Errors by Station display except all data is by port.
See “Network Errors by Station Mode” on page 93.
Size Distribution Statistics – Switched
Switched Size Distribution Statistics displays all standard (non-switched) size distribution
statistics by port. Each port may display a particular MAC address (and IP address) if the
Modem/ISDN/TI/T3 10K—45M
10megabit Ethernet Range 2M—8M
100megabit Ethernet Range 20M—80M
1000megabit (GigaBit) Range 200M—800M
4MB Token Ring 1M—3M
16MB Token Ring 4M—14M