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| Content Provider | ACM Digital Library |
|---|---|
| Author | Choffnes, David R. Scott, Colin Madhyastha, Harsha V. Anderson, Thomas Katz-Bassett, Ethan Cunha, Ítalo Valancius, Vytautas Krishnamurthy, Arvind Feamster, Nick |
| Abstract | The Internet was designed to always find a route if there is a policy-compliant path. However, in many cases, connectivity is disrupted despite the existence of an underlying valid path. The research community has focused on short-term outages that occur during route convergence. There has been less progress on addressing avoidable long-lasting outages. Our measurements show that long-lasting events contribute significantly to overall unavailability. To address these problems, we develop LIFEGUARD, a system for automatic failure localization and remediation. LIFEGUARD uses active measurements and a historical path atlas to locate faults, even in the presence of asymmetric paths and failures. Given the ability to locate faults, we argue that the Internet protocols should allow edge ISPs to steer traffic to them around failures, without requiring the involvement of the network causing the failure. Although the Internet does not explicitly support this functionality today, we show how to approximate it using carefully crafted BGP messages. LIFEGUARD employs a set of techniques to reroute around failures with low impact on working routes. Deploying LIFEGUARD on the Internet, we find that it can effectively route traffic around an AS without causing widespread disruption. |
| Starting Page | 395 |
| Ending Page | 406 |
| Page Count | 12 |
| File Format | |
| ISSN | 01464833 |
| DOI | 10.1145/2377677.2377756 |
| Journal | ACM SIGCOMM Computer Communication Review (CCRV) |
| Volume Number | 42 |
| Issue Number | 4 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1993-07-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Availability Measurement Outages Routing Bgp Internet Repair |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications Software |
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