The MPLS WG Archive

[Juha Heinanen <jh@lohi.eng.telia.fi>]

Lee Thomas writes:

 > I like having the static overlay model identified as this
 > reflects many current network implementations and I like the Signaled
 > Overlay Model as it describes a model that may be implemented as a new
 > network, or a Static Overlay network could be transitioned to a SOM.

opposite of static is not signaled but dynamic.  we do all of our ip/atm
overlays using signaled svcs between the routers, but the topology is
still static.  so better names would be static and dynamic overlays.

an example of dynamic overlays was documented as

ftp://lohi.eng.telia.fi/tmp/draft-ietf-ion-intra-area-unicast-01.txt

which unfortunately never got progressed because in the atm world it had
a dependency with the ospf ara option.  since signaling in mpls is based
on ip addresses, the ara thing is not anymore needed and i may respin
the i-d for mpls.

-- juha