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Comprising more than 61,000 servers located across nearly 1,000 networks in 70 countries worldwide, the Akamai platform delivers hundreds of billions of Internet interactions daily, helping thousands of enterprises boost the performance and reliability of their Internet applications. In this paper, we give an overview of the components and capabilities of(More)
In today's networks, the evolution of wide-area services is constrained by standardization and compatibility concerns. The result is that the introduction of a new service occurs much more slowly than the emergence of new applications and technologies that beneet from it. To ameliorate this problem, an active network exploits mobile code and programmable(More)
The growing numbers of mobile users challenge cellular network scalability. The IPv4 address space is not sufficiently large to uniquely identify all active network devices, while at the same time network address translation (NAT) middleboxes used to extend the IPv4 address space introduce performance overheads. Therefore, ISPs have started to adopt IPv6(More)
The transition to IPv6 cellular networks creates uncertainty for content providers (CPs) and content delivery networks (CDNs) of whether and how to follow suit. Do CPs that update their CDN contracts to allow IPv6 hosting achieve better, or worse performance in mobile networks? Should CDNs continue to host mobile content over IPv4 networks, or persuade to(More)
  • Stefan L. Karlsson, Elisabeth Ax, Erik Nygren, Susanne Källgård, Margareta Blomquist, Annelie Ekman +3 others
  • 2014
We describe here the development of stable classical and El Tor V. cholerae O1 strains of the Hikojima serotype that co-express the Inaba and Ogawa antigens of O1 lipopolysaccharide (LPS). Mutation of the wbeT gene reduced LPS perosamine methylation and thereby gave only partial transformation into Ogawa LPS on the cell surface. The strains express(More)
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