This is for the page where we list places that you may have bufferbloat and be unable to see it. I think that there is a place in the wiki, but I have to locate it, and I started writing this offline.
Many owners of (managed) fiber sell NNI to Access Port "LAN Extension" services. Typically there is a 1GB/s ethernet NNI in the data center, and a VLAN is assigned to travel to a 10Mb/s or 100Mb/s port at each site. The consumer of this service is usually (Boutique) ISPs, but also larger enterprises. Without oversubscribing the NNI, the provider of the fiber may have oversubscribed the service, and this can cause queues to develop inside of this layer-2 network. Even without oversubscription in the provider network, instantaenous bursts can sometimes cause significant jitter and buffer consumption. These buffers may have nothing to do with the consumer's traffic. Addition of buffers here reduces the drop probability therefore appears to the provider to be a good idea. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | network architect [ ] [email protected] http://www.sandelman.ca/ | ruby on rails [
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