Filter
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RMON U
TILITIES
9-27
Configuring Channels – The data and event stream formed by the packets that match the filter (or a group of
combined filters) is referred to as a “channel.” A channel can be based on a single filter or on multiple filter
expressions which are OR’ed together. The channel can be configured to pass packets through if they match or fail
to match the stated expression(s). Events can then be defined to turn the channel on or off, or can also be
triggered when the packets are accepted. From the control table, click on the Add (Edit) button to add (edit) a
channel entry. The dialog box that opens is described in the following table.
Table 9-20 Channel and Buffer Add/Edit Dialog Box
Field Description
Channel Controls the flow of data through the channel.
Index A number that identifies this channel in the channel table.
Interface A media interface on the monitored device. (MIB-2: 1.3.6.1.2.1.2.2.1.2)
Accept type Controls how the filters associated with this channel are implemented.
Matched – Packets will be accepted if they match both packet data and packet status entries
defined in the filter.
Failed – Packets will be accepted if they fail either packet data or packet status entries defined
in the filter.
Turn-On Event Specifies an event that will turn on the channel.
Turn-Off Event Specifies an event that will turn off the channel.
Accept Event Specifies an event that will be generated when the channel is on and a packet is accepted.