Name
Abstract | ||
|---|---|---|
Open Shortest Path First (OSPF) is a dynamic, hierarchical routing protocol designed to support routing in TCP/IP networks. A simulation of the OSPF Election Protocol shows three results: (1) The Designated Router (DR) can be elected in constant time. (2) If a router has a limited number of input buffers, a competition for buffers between the Election and the Flooding Protocols increases the election time and causes an oscillatory behavior.At each router, the Router-ID of the DR continuously changes causing instability. (3) In the worst case, when the DR and the BDR fail at the same time, the DR-agreement-time is bounded above by twice the HelloInterval. A simulation of the OSPF Flooding Protocol, using 20, 50 and 80 router point-to-point networks, shows three results: (1) For the 50 router network, as link speed exceeds 4000 Kbps, the probability of overflowing the input buffers increases causing retransmissions. The increase in bootup-convergence-time from retransmissions is bounded by two and three times the RxmtInterval for link speeds of 4000 to 6000 Kbps and above 50 Mbps respectively. The increase in the bootup-convergence-time is due to large number of unacknowledged flooding packets received within RxmtInterval. (2) For 20 and 50 router networks, the input buffer size has little impact on the bootup-convergence-time. For the 80 router network, a small change in the input buffer size drastically changes the bootup-convergence-time. (3) Reducing the value of the RxmtInterval lowers the bootup-convergence-time at high link speeds. |
Year | DOI | Venue |
|---|---|---|
1993 | 10.1145/166237.166243 | SIGCOMM |
Keywords | Field | DocType |
point to point,hierarchical routing,open shortest path first,routing protocol | Computer science,Flooding (computer networking),Computer network,Real-time computing,Hot Standby Router Protocol,Core router,Link state packet,P Router,Router,One-armed router,Metrics,Distributed computing | Conference |
Volume | Issue | ISSN |
23 | 4 | 0146-4833 |
ISBN | Citations | PageRank |
0-89791-619-0 | 9 | 22.51 |
References | Authors | |
0 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Deepinder P. Sidhu | 1 | 534 | 161.66 |
| Tayang Fu | 2 | 9 | 22.51 |
| Shukri Abdallah | 3 | 74 | 30.36 |
| Raj Nair | 4 | 121 | 35.03 |
| Rob Coltun | 5 | 155 | 60.14 |