Packet listeners display details
The packet listeners screen displays the packet listeners that are currently running on the
controller.
Figure 21 Selecting the Packet listeners screen
Description
Screen component
Refreshes the information on the screen.
Refresh
The PacketListener Role is one of the following:
PacketListener Role
ADVISOR
Examines the incoming packet. Might add processing hints to the message context,
but does not modify the packet out message.
DIRECTOR
Processes the packet. Might add actions or instructions to the packet-out message.
Can instruct the controller to block the packet, or to send the packet out.
OBSERVER
A passive observer who might examine the incoming packet and any packet-out
response.
Packets are given to packet listeners with role of
ADVISOR
first,
DIRECTOR
second,
and
OBSERVER
third. Every packet listener is guaranteed to see the packet-in
message. Depending on the action taken by higher altitude Directors, a lower altitude
Director might be too late to influence the packet processing.
The weight or priority this packet listener should have relative to other packet listeners
that have the same role. The controller gives packet listeners with higher numbers
priority over packet listeners with lower numbers.
Altitude
The average time, in milliseconds, that the packet listener spent processing a packet.
Average (ms)
The number of packets processed by that packet listener since the packet listener
registered.
# Samples
Packet listeners
57