LNS Switches: Difference between revisions

LNS Switches (view source)

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→‎Multiple LNS links to BT, TT and mobile

AA-Andrew

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<indicator name="Front">[[File:Menu-document.svg\|link=Category:~~Technical_Documents~~Technical Documents\|30px\|Back up to the Technical Documents category]]</indicator> This article is rather technical and covers the way we connect to BT for broadband links. The LNS handles authentication (logging in using your username and password) and routing of your IP addresses to you. It handles the negotiation of the link with your equipment and establishes a session. [[File:6000-small.png\|~~none~~frameless\|~~frame~~500px\|A FireBrick ~~6000 LNS~~FB6000]] ==Multiple LNS links to BT, TT and mobile== We operate multiple LNSs connected to multiple links in to carriers. This is partly for redundancy (if one of the LNSs or links break) and partly for load (to handle ~~over~~multiple ~~a gigabit, the size~~gigabits of ~~each link~~traffic). We currently have 1214 LNSs in use (A-N), plus one spare and one 'test' LNS. This has grown over time with four in 2012, seven in April 2016, nine in January 2017 ~~and~~, twelve in November 2017 and 14 in September 2018. Normally we run with n-1 live LNSs and so this leaves one as a backup in case of failure. Usually this creates a good graph for the previous day. However, in some cases the previous day on one of the LNSs may have been deleted before archive. In some cases the two LNS may operate on a different scale and so the combined graph looks messy and confusing. In some cases we change the graph format slightly and this can also lead to a messy graph. [[Category:~~Technical_Documents~~Technical Documents]]