Cariden often presents at conferences (see the news/events page for a recent overview). On this page we provide a selection of talks and papers by Cariden and its customers:
Author(s): Cariden Technologies
The current surge in mobile traffic growth is causing mobile backhaul networks to struggle to cope with the demand for services transiting from broadband radio access networks (RANs) onto operators’ core networks. Consequently, many operators are upsizing the capacity of their backhaul networks to relieve congestion, maintain customer satisfaction, and ultimately remain competitive. Others outsource this backhaul requirement to the traditional network service providers who, in turn, need to deliver the traffic cost effectively while maintaining the service quality that this type of traffic requires. This solution brief looks at the challenges faced in providing these services efficiently and describes how Cariden’s planning and traffic management products are being used to overcome them.
mobile_backhaul_solution_brief.pdf
Event: RIPE 61, November 2010, Rome, Italy
Author(s): Thomas Telkamp, Director of Network Consulting (Cariden), Clarence Filsfils (Cisco), Paolo Lucente (pmacc)
This presentation reviews current industry best practices for planning and traffic engineering in IP/MPLS networks. Technologies and approaches are compared, leveraging experience gained and case studies, including a number of tier 1 deployments.
156-ripe61-bcp-planning-and-te.pdf
Event: MPLS 2010, Washington DC
Author(s): Arman Maghbouleh, President (Cariden)
A wealth of information is available about MPLS standards, but little information is available about what is actually deployed and why. This study presents the results of a survey of 59 worldwide telecommunication providers. The survey results confirm the success of MPLS as a basis for service delivery and traffic engineering. The results also point to interesting findings such as vendor preferences in MPLS protocol choice, more variation in protocol choice for Layer 2 services than Layer 3 services, perseverance of single-service networks alongside multiservice networks, a tendency for keeping to the basics as much as possible, and extremely long adoption cycles.
mpls-deployment-survey-2010-1027.pdf
Event: DENOG 2009, Frankfurt, Germany
Author(s): Thomas Telkamp, Director of Network Consulting (Cariden)
In today’s economic climate, efficiency has become a key aspect of building networks, and operators are looking for the minimum amount of over-provisioning to meet QoS requirements. In this presentation, we analyze backbone traffic traces at different timescales. After showing that the aggregated traffic is well behaved, we present a methodology and simple empirical rule for capacity allocation on backbone links. In this manner, we demonstrate that some rules of thumb, such as a maximum link load of 50%, might not be acceptable approaches any more.
how_full_is_full_denog_11_09.pdf
Event: RIPE 52, April 2006, Istanbul, Turkey
Author(s): Thomas Telkamp, Director of Network Consulting (Cariden)
For most Internet service providers, the majority of their traffic enters or leaves the network via BGP-enabled peerings or upstream providers. Not only do these links need to have enough capacity during normal operation, but they also need to provide redundant capacity during link failures. For the egress traffic this can be easily verified by simulating the rerouting under failure since the topology of the network is completely known. The return traffic, however, cannot be simulated because the behaviour of the remote network is unknown. This creates a gap in the planning process for external peering links.
This presentation offers a simple methodology for creating failover matrices that describe the traffic redistribution under peering link failure conditions. These matrices provide a useful mechanism for sharing information and improving the mutual planning process without disclosing any proprietary information.
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