In this case the focus is resilience within a data centre. In particular resilience at the network layer. If several paths are available to a destination the system known as INFLEX can support fail over between paths seamlessly using OpenFlow. In this case the system is tested using Openvswitch.
Vasileios Kotronis, Xenofontas Dimitropoulos and Bernhard Ager
Claim is for an outsourced control plane for routing which is backward
compatible with BGP. Idea is that any “significant sized” networks
outsource routing to a contractor specialising in this.
Outsourcing party exports to contractor the following:
Policies, either directly or derived from SLAs.
Topologies and measurement data (jitter, load etc)
This paper deals with reducing costs for cloud computing users. Cloud customers
use “Traffic Redundancy Elimination” (TRE) to reduce bandwidth costs.
Redundant data chunks are detected and removed – cloud providers will
not implement middleboxes for this as they have no incentive.
The paper gives a TRE solution which does not require a server
to maintain client status. The system is known as PACK “Predictive
ACKnowledgements” which is receiver driven.
Hitesh Ballani, Paolo Costa, Thomas Karagiannis and Ant Rowstron
This paper looks at the issue of reducing variability in performance
in data centre networks. Variable network performance can lead
to unreliable application performance in networked applications –
this can be a particular problem for cloud apps. Virtual networks
are proposed as a solution to isolate the “tenant” performance from
the physical network infrastructure. The system presented is known
as Oktopus. The system provides a tradeoff between guarantees to tenants,
costs to tenants and profits to providers by mapping a virtual network
to the physical network.