Allied Telesis Rapier Switch - Manual (Page 3)

Application Note 3
Allied Telesyn Guide to Ingress Rate Limiting on the Rapier-i
C613-43002-00 REV A
June 23, 2003
■ Add ports 1 and 2 to the VLAN, using the command:
add vlan=2 port=1,2
■ Set the Egress Limit on port 2, using the command:
set switch port=2 egresslimit=2000
■ Link port 2 to port 3, using a cross-over cable.
This set up, shown in Figure 2, has the effect of setting an Ingress Rate Limit of
2Mbps on Port 1 with the benefit of buffering. The result is that the end-to-end
throughput of the traffic from host 1 to host 2 will be very close to the
configured limit of 2Mbps.
Figure 2: Rate limiting on the Rapier-i
References
E. Altman, J. Bolot, P. Nain, D. Elouadghiri, M. Erram-dani, P. Brown, and D.
Collange, “Performance Modeling of TCP/IP in a Wide-Area Network”, 34th
IEEE Conference on Decision and Control, Dec. 1995.
K. Fall and S. Floyd, “Simulation-based Comparisons of Tahoe, Reno, and
SACK TCP” Computer Communication Review, Jul. 1996.
A. Kumar, “Comparative Performance Analysis of Versions of TCP in a Local
network with a Lossy Link”, IEEE/ACM Transactions on Networking, Aug.
1998.