Latest posts

  • MTU and PMTUD on L2VPNs

    I recently ran into an interesting issue at work today. One of our customers were having issues with a site in Gothenburg. They were using L2VPNs as circuits between their central site and the remote sites. Across this L2VPN they are running MPLS MP-eBGP peering using inter AS option 2b to allow multiplexing of different…

  • MPLS basics – tips & trix

    This will be a living document, for troubleshooting and tracing MPLS traffic. The idea is for me and others to be able to reference this post for basic MPLS troubleshooting. < MPLS purpose and MPLS packet headers The original purpose of MPLS was to allow for faster packet routing through a provider network. This is…

  • DC@Home 3 – Configuring the MPLS WAN

    The past two weeks I have been working hard at getting the new MPLS WAN up and running. The idea is to build a scaleable solution, even though my MPLS cloud never will grow large enough to require the scalability. The plan is also to allow my colleagues to join the MPLS WAN, which means…