1 / 3

VPLS/IPLS Full Mesh Failures

VPLS/IPLS Full Mesh Failures. Assumption that full mesh of PWs is present. If assumption fails, black holes can occur. Failure modes: Data plane failures that misdirect or drop packets Loss of proper PW state at edges Auto-discovery/configuration failures

sasha
Télécharger la présentation

VPLS/IPLS Full Mesh Failures

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. VPLS/IPLS Full Mesh Failures • Assumption that full mesh of PWs is present. • If assumption fails, black holes can occur. • Failure modes: • Data plane failures that misdirect or drop packets • Loss of proper PW state at edges • Auto-discovery/configuration failures • But remember: PWs not real wires • Implemented via any-any network • Increase in error coverage is small: • Failures not caused by backhoes, router outages, but by bugs and errors. L2VPN WG

  2. Bad Ideas for Detecting Failure • Local Information (detection only): • mismatch between operational PWs and discovered endpoints • PW operational status changes • Global Information (with resilience): • PWs as overlay network, run SPT • PWs as overlay network, run routing L2VPN WG

  3. Not Quite So Bad Idea? • Global Information (detection only) • Each edge tells every other edge “here are the PW endpoints I can talk to” • Get global info, from each edge, set of other edges that can be seen. • Any edge not universally seen is removed from mesh. • Is this worth pursuing? L2VPN WG

More Related