| Abstract: |
In this survey, we study and compare topology
aggregation techniques pertaining to QoS routing. Aggregation techniques
have been an explicit by design or implicit part of many routing
protocols, including the currently deployed ones on the Internet due to
scalability. Topology Aggregation, defined as those techniques to
abstract or summarize the sate information to be exchanged, processed
and maintained by network nodes for routing purposes, have not been
studied extensively except under a rather limited context. Under the
continuing growth of the Internet, scalability issues of routing, and
QoS routing in particular, have been gaining more importance than ever.
With this in mind, we are surveying the TA techniques from the
literature. Many of the techniques of TA, if not in its entirety, seems
to be relevant to current and future IP networks, especially when the
very active research area of interdomain routing is considered. |