TY - GEN
T1 - Outage analysis of a university campus network
AU - Choi, Baek Young
AU - Song, Sejun
AU - Koffler, George
AU - Medhi, Deep
PY - 2007
Y1 - 2007
N2 - Understanding outage and failure characteristics of a network is important to assess the availability of the network, determine failure source for trouble-shooting, and identify weak areas for network availability improvement. However, there has been virtually no failure measurement and analysis on access networks. In this paper, we carry out an in-depth outage and failure analysis of a university campus network using a rich set of both node outage and link failure data. We investigate the aspects of spatial and temporal localities of failures and outages, the relation of link failure and node outage, and the impact of the hierarchical and redundant network design on outage. We find most of link failure events are not caused by node failures; frequent link up-down events may not lead to the corresponding node's outage; for access layer switches that connect to end hosts, their link up-down events exhibit periodic patterns.
AB - Understanding outage and failure characteristics of a network is important to assess the availability of the network, determine failure source for trouble-shooting, and identify weak areas for network availability improvement. However, there has been virtually no failure measurement and analysis on access networks. In this paper, we carry out an in-depth outage and failure analysis of a university campus network using a rich set of both node outage and link failure data. We investigate the aspects of spatial and temporal localities of failures and outages, the relation of link failure and node outage, and the impact of the hierarchical and redundant network design on outage. We find most of link failure events are not caused by node failures; frequent link up-down events may not lead to the corresponding node's outage; for access layer switches that connect to end hosts, their link up-down events exhibit periodic patterns.
UR - https://www.scopus.com/pages/publications/40949163571
UR - https://www.scopus.com/pages/publications/40949163571#tab=citedBy
U2 - 10.1109/ICCCN.2007.4317895
DO - 10.1109/ICCCN.2007.4317895
M3 - Conference contribution
AN - SCOPUS:40949163571
SN - 9781424412518
T3 - Proceedings - International Conference on Computer Communications and Networks, ICCCN
SP - 675
EP - 680
BT - Proceedings of 16th International Conference on Computer Communications and Networks 2007, ICCCN 2007
T2 - 16th International Conference on Computer Communications and Networks 2007, ICCCN 2007
Y2 - 13 August 2007 through 16 August 2007
ER -