Short-circuiting a ROUTE REQUEST using Cached Routes
Short-circuiting
: Replying to ROUTE REQUESTs using Cached Routes
Short-circuiting
the
Route Discovery operation:
If
a
node
receives a
ROUTE REQUEST
and
the
node
has a
source route
to the
destination
:
The
node
can
terminite
the
ROUTE REQUEST
prematurely
and
The
node
will
send
a
ROUTE REPLY
message
back
to the
requester
!!!
Example:
Node A
sends a
REQUEST REQUEST
to find a
route
to
D
:
Node Y
does
not
have a
route
to
D
and will
forward
the
ROUTE REQUEST
:
Node X
does
have
a
source route
and can
reply
with a
ROUTE REPLY
message: