TY - GEN
T1 - Independent relays in overlays for reliable enterprise IP telephony
AU - Karacali, B.
AU - Karol, M.
AU - Krishnan, P.
AU - Kumar, K.
AU - Meloche, J.
PY - 2006
Y1 - 2006
N2 - Network QoS degradation can significantly impair the ability of networks to satisfy the stringent requirements of real-time applications such as IP Telephony. Recently, we proposed a simple and practical overlay technique called ORBIT (Overlays providing Reliability for Better IP Telephony) that uses intelligent endpoints and independent relays. In the ORBIT architecture, the endpoints rapidly detect network QoS degradation and find better "single-hop" alternate paths (i.e., paths that traverse at most one relay). One key issue for ORBIT and single-hop overlays in general is how many relays to deploy and where to place these relays in the network for adequate protection against QoS problems. In this paper, we concentrate on enterprise networks and evaluate the benefits of random placement of relays. Our simulation study indicates that a small number of relays with respect to the network size is sufficient to achieve a high level of protection.
AB - Network QoS degradation can significantly impair the ability of networks to satisfy the stringent requirements of real-time applications such as IP Telephony. Recently, we proposed a simple and practical overlay technique called ORBIT (Overlays providing Reliability for Better IP Telephony) that uses intelligent endpoints and independent relays. In the ORBIT architecture, the endpoints rapidly detect network QoS degradation and find better "single-hop" alternate paths (i.e., paths that traverse at most one relay). One key issue for ORBIT and single-hop overlays in general is how many relays to deploy and where to place these relays in the network for adequate protection against QoS problems. In this paper, we concentrate on enterprise networks and evaluate the benefits of random placement of relays. Our simulation study indicates that a small number of relays with respect to the network size is sufficient to achieve a high level of protection.
UR - http://www.scopus.com/inward/record.url?scp=50649104393&partnerID=8YFLogxK
U2 - 10.1109/SARNOF.2006.4534788
DO - 10.1109/SARNOF.2006.4534788
M3 - Conference contribution
AN - SCOPUS:50649104393
SN - 1424400023
SN - 9781424400027
T3 - 2006 IEEE Sarnoff Symposium
BT - 2006 IEEE Sarnoff Symposium
T2 - 2006 IEEE Sarnoff Symposium
Y2 - 27 March 2006 through 28 March 2006
ER -