Overscan reachability

OVERSCANUI KIT

Behind a break is unreachable, not down. Each host's state is derived from the path to it, from one vantage, the monitor. A host every one of whose parents is down is UNREACHABLE, state undetermined: it is not blamed for its router, and its last report of UP is shown as history with its age, not believed. The router blocking the path is named with how many are behind it. A link is lit only when a poll came back over it, a host never polled is UNPOLLED, and redundant parents keep a host reachable while one of them answers.

demo/topology.html, from this page

import 'overscan'
import 'overscan/overscan.css'

<ov-topology
  id="live-topology"
  max-age="8"
></ov-topology>

import { OvTopology } from 'overscan/react'

<OvTopology
  id="live-topology"
  max-age="8"
/>

import { OvTopology } from 'overscan/vue'

<OvTopology
  id="live-topology"
  max-age="8"
/>

import OvTopology from 'overscan/svelte/OvTopology.svelte'

<OvTopology
  id="live-topology"
  max-age="8"
/>

live: the core router fails and recovers

variation: src="models/topology-site.json" max-age="60"

import 'overscan'
import 'overscan/overscan.css'

<ov-topology
  src="models/topology-site.json"
  max-age="60"
></ov-topology>

import { OvTopology } from 'overscan/react'

<OvTopology
  src="models/topology-site.json"
  max-age="60"
/>

import { OvTopology } from 'overscan/vue'

<OvTopology
  src="models/topology-site.json"
  max-age="60"
/>

import OvTopology from 'overscan/svelte/OvTopology.svelte'

<OvTopology
  src="models/topology-site.json"
  max-age="60"
/>

a core router down

two paths, one down

every host answering

variation: src="models/topology-redundant.json"

import 'overscan'
import 'overscan/overscan.css'

<ov-topology src="models/topology-redundant.json"></ov-topology>

import { OvTopology } from 'overscan/react'

<OvTopology src="models/topology-redundant.json" />

import { OvTopology } from 'overscan/vue'

<OvTopology src="models/topology-redundant.json" />

import OvTopology from 'overscan/svelte/OvTopology.svelte'

<OvTopology src="models/topology-redundant.json" />

terminal

variation: src="models/topology-clear.json" max-age="60"

import 'overscan'
import 'overscan/overscan.css'

<ov-topology
  src="models/topology-clear.json"
  max-age="60"
></ov-topology>

import { OvTopology } from 'overscan/react'

<OvTopology
  src="models/topology-clear.json"
  max-age="60"
/>

import { OvTopology } from 'overscan/vue'

<OvTopology
  src="models/topology-clear.json"
  max-age="60"
/>

import OvTopology from 'overscan/svelte/OvTopology.svelte'

<OvTopology
  src="models/topology-clear.json"
  max-age="60"
/>

industrial

cyber

antiseptic

esper

neo

machina

holo

aegis

vector