Mickael Meulle

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Routing policies are typically partitioned into a few classes that capture the most common practices in use today[1]. Unfortunately, it is known that the reality of routing policies[2] and peering relationships is far more complex than those few classes[1,3]. We take the next step of searching for the appropriate granularity at which policies should be(More)
The border gateway protocol (BGP) is used today by routers of all autonomous systems (AS) in the Internet. BGP is responsible for end-to-end reachability in the Internet. BGP routers have to exchange routes towards about 200,000 prefixes (blocks of IP addresses). Inside each AS, routers are using internal iBGP sessions to exchange their best route with(More)
The Border Gateway Protocol (BGP) is used today by all Autonomous Systems (AS) in the Internet. Inside each AS, iBGP sessions distribute the external routes among the routers. In large ASs, relying on a full-mesh of iBGP sessions between routers is not scalable, so route-reflection is commonly used. The scalability of route-reflection compared to an iBGP(More)
Researchers and network operators often say that BGP table transfers are slow. Despite this common knowledge, the reasons for slow BGP transfers are not well understood. This paper explains BGP table transfer delays by combining BGP messages collected at a large VPN provider backbone and controlled experiments with routers of three different vendors as well(More)
This paper studies how intradomain routing instability relates to events in network trouble tickets for two networks: a VPN provider and the Internet2 backbone network. Our goal in performing this joint analysis of routing and trouble tickets is to better understand the likely underlying causes of intradomain routing instability. We develop a method to(More)
One of the most common provider provisioned VPN technologies uses MPLS as a data plane for customer flow isolation and BGP as a control plane for routing between VPN sites. From a data plane perspective, such networks can provision hundreds of thousands of VPN sites. However, the BGP control plane is prone to scalability concerns. Some BGP routers in VPN(More)
The Internet is organized as a collection of networks called Autonomous Systems (ASes). The Border Gateway Protocol (BGP) is the glue that connects these administrative domains. Communication is thus possible between users worldwide and each network is responsible of sharing reachability information to peers through BGP. Protocol extensions are periodically(More)
We call <i>network events</i> incidents that disturb the normal behavior of one or more elements of an IP network. Routers, network interface cards, and IP links can fail or malfunction for many reasons. For example, operators may need to reboot a router for a software upgrade, an interface card may crash, and IP links may be overloaded because of a(More)
The Internet is organized as a collection of administrative domains, known as Autonomous Systems (ASes). These ASes interact through the Border Gateway Protocol (BGP) that allows them to share reachability information. Adjacent routers in distinct ASes use external BGP (eBGP), whereas in a given AS routes are propagated over internal BGP (iBGP) sessions(More)