Pedro Almeida wrote:
Hello all;
I have some doubts concerning the way CTP works:
- when are CTP routing frames sent? and the LEEP frames?
TEP 123 states: "The implementation sends routing beacons as LEEP
packets." What does this mean?
but since "The implementation uses two mechanisms to estimate the
quality of a link: periodic LEEP [1] packets and data packets.", then
why do I notice that only after exactly 14 data messages exchanged do
I get correct payloads within the serial frames? it's as if the tree
is still being formed and until then, all i get is 0'es. If i reduce
the rate of data frames are being sent or if i increase the number of
nodes, it still requires exactly 14 frames (at least 14 frames on the
serial port) to give meaningful information. Are not the LEEP frames
used by default? How can i relate this to the behaviour i see in the
serial port. And the routing frames? are they also being exchanged by
default somewhere in the link layer?
Thank you!
TEP 123 is not intended to document exactly how the implementation in
net/ctp works; rather, it is intended to document how the protocol works
and establish the requirements for interoperability. Therefore, 123 does
not specify exactly how everything works, as that would make it
impossible for protocol implementations to improve over time.
The implementation in net/ctp currently uses a trickle timer for routing
frames, resetting the timer when it hears a P bit or sets the P bit.
Phil
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