System information

RMON Modes 427
MAC Bytes
The number of octets (bytes) of data in MAC packets (excluding those that were not good
frames) received on the network (excluding framing bits, but including FCS octets).
MAC Packets
The number of MAC packets (excluding packets that were not good frames) received.
NAUN Changes
The total number of NAUN changes detected by the Probe.
Occurrence of Hardware Address
The occurrence of a hardware address specified in the Actions dialog. The addresses are
listed from the local or remote address table. This table can be viewed or edited in either
the “Discover Network Names” mode dialog, or the “Filter” dialog.
Note: This trigger is only available using Network Instruments’ RMON2
Probe.
Ring Poll Events
The number of ring poll events detected by the Probe (i.e., the number of ring polls
initiated by the active monitor that were detected).
Ring Purge Events
The number of times that the ring enters the ring purge state from normal ring state. The
ring purge state that comes in response to the claim token or beacon state is not counted.
Ring Purge Packets
The number of ring purge MAC packets detected by the Probe.
Sequence of Bytes at an Offset
The occurrence of a sequence of bytes at a specified offset. The format of the offset is a
decimal number representing the number of bytes “offset” or from the beginning of a
packet. The bytes defined must be defined in hex with a space between each set of
characters.
For example, if you define an offset-sequencing trigger to look for telnet packets (i.e.,
looking for TCP port 23), the offset would be
42 if no Token Ring source routing
information is in the packet, and the sequence would be
00 17 — port 23 in hex.
See the section on active highlighting (in the Packet View sections of the manual) for help
on creating offsets.
• Note: This trigger will only be available using Network Instruments’ RMON2 Probe.