==> Jak sprawdzic statystyki jakiejs sieci? cisco6.han#sh ip bgp flap-statistics BGP table version is 16738002, local router ID is 212.76.159.113 Status codes: s suppressed, d damped, h history, * valid, > best, i - internal Origin codes: i - IGP, e - EGP, ? - incomplete Network From Flaps Duration Reuse Path h 12.149.7.0/24 212.76.159.94 3 00:22:43 6705 3300 701 1239 22406 * 24.50.145.0/24 212.76.159.94 6 01:16:17 6705 6461 19548 7843 * 24.52.128.0/21 212.76.159.94 2 00:08:08 6705 6461 19548 7843 * 24.52.136.0/22 212.76.159.94 2 00:08:08 6705 6461 19548 7843 * 24.54.24.0/24 212.76.159.94 6 01:16:17 6705 6461 19548 7843 * 24.55.192.0/24 212.76.159.94 5 01:16:17 6705 6461 19548 7843 * 40.252.56.0/24 212.76.159.94 1 00:10:02 6705 3300 3549 5511 3215 * 57.249.147.0/24 212.76.159.94 1 00:10:02 6705 3300 3549 5511 3215 *> 61.57.128.0/20 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 7534 * 61.57.160.0/19 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 18044 * 61.60.224.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.226.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.228.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.229.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.230.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.231.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.232.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.233.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.234.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.235.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.237.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 * 61.60.238.0/24 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 9918 9918 18049 *> 61.61.0.0/20 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.16.0/20 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.32.0/20 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.48.0/20 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.64.0/19 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.96.0/19 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.128.0/19 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 *> 61.61.160.0/19 212.76.159.94 1 00:02:56 6705 3300 3549 9918 9918 9918 * 61.93.0.0/18 212.76.159.94 3 00:16:09 6705 3300 7018 9269 9269 9269 * 61.93.64.0/18 212.76.159.94 3 00:16:09 6705 3300 7018 9269 9269 9269 ^C cisco6.han# ==> Wybierany sobie jakas siec, badz szukamy tej ktora nas interesuje w tej liscie. ==> Nas interesuje np. 57.249.147.0/24. Cos we Francji, jak widac w whois: OrgName: SITA-Societe Internationale de Telecommunications Aeronautiques OrgID: SIDTA Address: 112 Avenue Charles de Gaulle Address: Neuilly, 92522 Cedex City: StateProv: PostalCode: Country: FR ==> teraz wklepujemy "sh ip bgp 57.249.147.0": cisco6.han#sh ip bgp 57.249.147.0 BGP routing table entry for 57.249.147.0/24, version 16383696 Paths: (3 available, best #1, table Default-IP-Routing-Table) Not advertised to any peer 13237 6461 5511 3215, (received & used) 217.71.104.41 from 212.76.149.129 (212.76.159.249) Origin incomplete, localpref 125, valid, internal, best 6705 3300 3549 5511 3215 212.76.159.94 from 212.76.159.94 (212.98.126.197) Origin incomplete, localpref 100, valid, external Community: 6705:110 6705:3001 6705 3300 3549 5511 3215, (received-only) 212.76.159.94 from 212.76.159.94 (212.98.126.197) Origin incomplete, localpref 100, valid, external Community: 6705:110 6705:3001 ==> I jak widac: Not advertised to any peer. Czyli calkiem down. ==> Wybieramy cos cos jeszcze osiagalne jest ;-) : 24.50.145.0/24 ==> Nalezy do: Adelphia Cable Communications ADELPHIA-CABLE (NET-24-48-0-0-1) 24.48.0.0 - 24.51.255.255 Adelphia 24501440-Z255 (NET-24-50-144-0-1) 24.50.144.0 - 24.50.151.255 ==> Nasze cisco pokazuje: cisco6.han#sh ip bgp 24.50.145.0 BGP routing table entry for 24.50.145.0/24, version 16737180 Paths: (3 available, best #1, table Default-IP-Routing-Table) Not advertised to any peer 13237 6461 19548 7843, (received & used) 217.71.104.41 from 212.76.149.129 (212.76.159.249) Origin IGP, localpref 125, valid, internal, best 6705 6461 19548 7843 212.76.159.94 from 212.76.159.94 (212.98.126.197) Origin IGP, localpref 100, valid, external Community: 6705:200 6705:3000 Dampinfo: penalty 1148, flapped 6 times in 01:21:20 6705 6461 19548 7843, (received-only) 212.76.159.94 from 212.76.159.94 (212.98.126.197) Origin IGP, localpref 100, valid, external Community: 6705:200 6705:3000 cisco6.han# ==> Co widac? Dampinfo: penalty 1148, flapped 6 times in 01:21:20 ==> Czyli: w ostatnich 80 minutach 6 razy mieli lacze down.