SLA management in federated environments

Abstract

Increasingly, services such as E-commerce, web hosting, application hosting, etc., are being deployed over an infrastructure that spans multiple control domains. These end-to-end services require cooperation and internetworking between multiple organizations, systems and entities. Currently, there are no standard mechanisms to share selective management information between the various service providers or between service providers and their customers. Such mechanisms are necessary for end-to-end service management and diagnosis as well as for ensuring the service level obligations between a service provider and its customers or partners. In this paper we describe an architecture that uses contracts based on service level agreements (SLAs) to share selective management information across administrative boundaries. We also describe the design of a prototype implementation of this architecture that has been used by us for automatically measuring, monitoring, and verifying service level agreements for Internet services.

Reputation = f(user ranking, compliance, verity)

“…Compliance (or conformance) has been discussed in [4] and explored by [14]. The design for conformance in [14] consists of a contract template and a System Dictionary used to verify a contract.…”

“…Compliance (or conformance) has been discussed in [4] and explored by [14]. The design for conformance in [14] consists of a contract template and a System Dictionary used to verify a contract. The customer specific data is inserted in the contract template and verified against the system measurements that were asserted while forming the contract.…”

“…The customer specific data is inserted in the contract template and verified against the system measurements that were asserted while forming the contract. The contract is evaluated and the compliance results are presented as customized reports for each customer [14]. Here, compliance remains a graphical view to the end user and is not formally quantified.…”

ASP strategies and solutions for eProcurement processes offered by an eMarket

“…Since first concepts and proposals exist (e.g. SLAs for federated environments [12]) and well-established rules and procedures do exists for ATM networks, we will most likely have to wait a few more If the reader can transfer the findings to a direct ASP user (e.g. buyer or supplier who is not using an intermediary), it should be possible to obtain some insights and take some actions arising from the cases presented above.…”

“…Literature on contracts for ATM services, service level agreements (SLA) between multiple cooperating organizations and contracts in the telecom industry (cf. [12], [13]) cover similar inter-organizational services with multiple service customers and multiple service providers. The research covers elements of SLAs, contracts and their automated monitoring, as well as system architectures for designing and managing contracts and SLAs.…”