v-- Sub-problems --v Scenarios -> VoIP (Matt) B-Fed (Mukund) ABC (Per+Machi) SvcComp (Bhaskar) Congestion Pricing in a Backup Paths (wdc) BGP (many people) Trust Mgmt. (Takashi) QoS on Overlay (Lakme) Auction-based Rsrc Alloc Stateless QoS OPP (Sharad) Isobar++ (Yan)
            WLAN (Jimmy)         for wireless spectrum (wdc,matt)      
Svc*   pstn gw selection b-conn multi-access conn Fault Tol Svc Comp conn Fault-tol conn conn "" QoS conn QoS Policy+Conn. Measurement
                             
Domain   Perf+Admin Protocol+Admin Access+Admin Cluster Admin Overlay Node Admin., scope Trust+Admin X Admin X X X
(Number of)   (10-100) 1000 10-100 1000   100 10000 10-100 2   1 10000 100
Domain Mgr.   Location server B-GW MOSE Cluster Mgr WLAN Access Point Overlay Node BGP router AAA server Overlay Node Auctioneer Router Overlay Node Measurement Node
(Function)   (redirector) (data router) (redirector,router) (svc router)   conn data router auth,redirn   (centralized allocator) (QoS provider) (Policy mgr.) (Prober)
Peering   Admin Admin Admin   X Overlay Admin Admin Admin Pairwise X X Admin X
                      (no peering bt domains yet)      
Info propagated bet. peers   Mesh flooding D.V. routing Undecided L.S. routing X X D.V. routing Pairwise Feedback (pkt drops) X X D.V. routing? X
(What info)   (congestion info) (connectivity+metric) (content/client proximity, (Link costs+node costs)     (connectivity) (credential agrmnt)       (connectivity+policies) X
        access method                    
        performance)                    
                             
Svc* Placement   X X X X X X X X X X   X Based on clustering
                            1-per-cluster
Svc* Discovery   X X (Near Future) X ? (Replica discovery) X X X X X X   X X
    Preconfig Preconfig Preconfig         Preconfig          
                             
Svc* selection   QoS+Load (heur.) Shortest path "best" MOSE Shortest path X Low-fault-correl-path Shortest path X X X   Policy-based shortest-path Cluster prober
    (pull, dyna,1-hop) (push, multi-hop) (content based) (mod. Dijk)   (centralized)           Perf constraint-based… X
                             
                             
                             
                             
Resource Alloc/Mgmt   Pricing-based FCFS   X Congestion Price based Paths X Load distributor (mb) WFQ + FEC Auction-based Stateless Methods Admission Control X
    (GW-VoicePorts (Data channels) (Load+access-perf+   (Wireless bandwidth)     (Load) Overlay drop rate (ephemeral, shared resources) (Aggregation/Sampling)    
    IP paths)   addr space+                    
        end-server-load                    
                             
Measurement --           X X     Dynamic,drops Passive thruput,delay measurements Metering of b/w Connectivity/Perf input to decisions  
  -- Performance   pkt drop (RTCP) link cost (probes) latency,bw,(probes) Liveness, link costs     (Dynamic) -Morley CPU usage         Congestion/Failure
    congestion:ports           Convergence            
                             
  --Topology         Graphing ALGO, heur. X X (Static) - Sharad   X X      
          static     (graphing algo, heur)            
                             
Usage verification by svc mgr   X X X (Future) X X X   X X X Stateless detection ^ Yes - wrt above…  
                             
Svc* Verification by user   X X X (Future) X X X   X X X   X X
                             
Trust Mgmt.   X X <-use AAA X X X   InterDmn - static X X Certificates X X
                  IntraForeignDmn** -          
                  - dynamic          
                             
                             
Format Transformation   X IP Protocol headers IP- Protocol headers Implicit X X   X FEC X   X X
        transcoding