TCP's retransmission timeout
The retransmission timeout plays an important role in allowing TCP to recover from segment losses. Over the years, extensions to TCP have been developed to reduce the reliance of TCP on the...
View ArticleMPLS autobandwidth
Since several years, Cisco routers have included a feature called mpls autobandwidth that allows the router to compute automatically the bandwidth required for an LSP and adjust the reserved bandwidth....
View ArticleTCP crypt
Despite its respectable age (the first specification was published in September 1981), TCP is still alive and researches and IETFers continue to develop new extensions to improve the protocol....
View ArticleSecuring BGP
BGP is one of the key protocols that are used on the Internet today. Despite of its importance, the security of BGP is still a concern. Several solutions to improve the security of BGP have been...
View ArticleThe return of T/TCP
In the early 1990s, the T/TCP extension to TCP was proposed to allow hosts to exchange data without being forced to wait until the end of the three way handshake. Specifications ( RFC1379 and RFC1644)...
View ArticleNew TCP timestamps
Introduced in RFC1323, the TCP timestamp option enables TCP hosts to better estimate the round-trip time by adding a timestamp to each transmitted TCP segment. These timestamps are also useful for high...
View ArticleRoute Flap Damping is back ?
One of the problems faced by BGP routers today is the BGP churn, i.e. the number of messages that they have to process. Measurement studies have shown that a small fraction of the prefixes are...
View ArticleDNS prefetching : browser optimisations may cause DNS server overload
Recent browser have added an optimisation that enables the browser to resolve all the DNS names that appear inside a visited HTML page while the browser displays the HTML page. This can speed up the...
View ArticleWho is using MPLS and how
In an interesting survey presented at MPLS 2010, Cariden, a vendor of provisioning and traffic engineering tools, describes the current deployments of MPLS. The survey mentions several interesting...
View ArticleMoving to INGI Blog
This INL blog will not be maintained anymore. We have created a department-wide blog and our blog posts will now appear on the INGI blog at :http://sites.uclouvain.be/blog-ingi/Stay tuned !
View Article
