MICROCHIP AN1286 Ethernet Ring Protection Switch Configuration User Guide
Mawu Oyamba
Chikalatachi chikufotokoza momwe mungakhazikitsire mawonekedwe a Ethernet Ring Protection Switching (ERPS). Ethernet Ring Protection Switching imatanthauzidwa ndi muyezo wa ITU G.8032.
Kukhazikitsa uku kumagwirizana ndi ITUT-G.8032(V1) ndi ITUT-G.8032(V2).
Muyezo wa ITU G.8032 umatanthawuza njira zosinthira zodzitchinjiriza (APS) ndi njira zosinthira zodzitchinjiriza za ma ring topology a Ethernet layer network (ETH). Protocol yachitetezo yofotokozedwa mu ITU G.8032 imathandizira kulumikizidwa kwa pointto point, point-to-multipoint ndi multipoint-to-multipoint kulumikizana mkati mwa mphete kapena mphete zolumikizidwa, zotchedwa "multi-ring/ladder network" topology. Mapu a mphete a ETH amatengera mawonekedwe a mphete.
Node iliyonse ya Efaneti ya mphete imalumikizidwa ndi ma ring ring node a Efaneti omwe akutenga nawo mbali mu mphete ya Efaneti yomweyo, pogwiritsa ntchito maulalo awiri odziyimira pawokha. Ulalo wa mphete umamangidwa ndi ma ring ring node awiri oyandikana ndi Ethernet ndipo doko la ulalo wa mphete limatchedwa doko la mphete. Chiwerengero chocheperako cha Ethernet ring node mu mphete ya Ethernet ndi ziwiri.
Kupewa kwa loop mu mphete ya Ethernet kumatheka potsimikizira kuti, nthawi iliyonse, magalimoto amatha kuyenda pamalumikizidwe onse kupatula amodzi. Ulalo womwewu umatchedwa ulalo wachitetezo cha mphete (RPL) ndipo nthawi zonse ulalo wa mphetewu umatsekedwa, mwachitsanzo, osagwiritsidwa ntchito pamagalimoto. Mbali imodzi yosankhidwa ya Ethernet ring node, mwini wake wa RPL, ali ndi udindo woletsa magalimoto kumapeto kwa RPL. Pansi pa kulephera kwa mphete ya Ethernet, node ya mwini wake wa RPL ali ndi udindo wotsegula mapeto ake a RPL, pokhapokha ngati RPL yalephera, kulola kuti RPL igwiritsidwe ntchito pamsewu. Mbali ina ya mphete ya Efaneti yomwe ili pafupi ndi RPL, malo oyandikana nawo a RPL, athanso kutenga nawo gawo poletsa kapena kumasula mathero ake a RPL.
Zinthu zotsatirazi za mphete ya Ethernet zimathandizidwa:
- Kulephera kwa Signal (SF) - Pamene chikhalidwe cha SF chidziwika pa chingwe cha mphete ndipo chimatsimikiziridwa kukhala cholephera "chokhazikika", ma ring ring node a Ethernet omwe ali pafupi ndi ulalo wolephera wa mphete amayambitsa njira yosinthira chitetezo.
- Palibe pempho (NR) - Mkhalidwe womwe palibe zopempha zosinthira zachitetezo cha komweko zikugwira ntchito. Malamulo otsatirawa amathandizidwa:
- Kusintha kokakamiza (FS) - Lamuloli limakakamiza chipika pa doko la mphete pomwe lamulo limaperekedwa.
- Kusintha kwa Manual (MS) - Popanda kulephera kapena FS, lamuloli limakakamiza chipika pa doko la mphete pomwe lamulo limaperekedwa.
- Chotsani - Lamulo Lomveka, pa Ethernet ring node, imagwiritsidwa ntchito pazinthu zotsatirazi.
- Kuchotsa lamulo loyang'anira dera (mwachitsanzo, FS kapena MS).
- Kuyambitsa kuyambiranso kusanachitike kudikirira kubwezeretsa (WTR) kapena kudikirira kutsekereza (WTB) timer itatha pakachitika ntchito yobwezeretsa.
- Kuyambitsa kubwereranso pakachitika ntchito yosabwereranso.
Kusintha kobwerera komanso kosabwerera.
- Mu ntchito yobwereranso, pambuyo poti (zi) zomwe zimayambitsa kusinthako zatha, njira yamagalimoto imabwezeretsedwa ku bungwe loyendetsa ntchito, mwachitsanzo, kutsekedwa pa RPL.
Chilema chikachotsedwa, njira yamagalimoto imabwerera ikatha nthawi ya WTR, yomwe imagwiritsidwa ntchito popewa kuwongolera chitetezo pakagwa vuto lapakatikati. - Pogwira ntchito yosabwereranso, njira yamagalimoto ikupitirizabe kugwiritsa ntchito RPL, ngati siinalephereke, pambuyo posintha kusintha.
Kusintha kwa chitetezo kumachitika pamene:
- SF imalengezedwa pa imodzi mwamalumikizidwe a mphete ndipo mawonekedwe a SF omwe apezeka ndi ofunika kwambiri kuposa pempho lililonse lapafupi kapena pempho lakutali.
- uthenga wa R-APS womwe walandiridwa ukupempha kuti usinthe ndipo umakhala wofunika kwambiri kuposa pempho lililonse lakwanu
- zoyambitsidwa ndi owongolera (mwachitsanzo, FS, MS) ngati zili zofunika kwambiri kuposa pempho lililonse lakwanu kapena pempho lakutali.
Zotsatira za ERPS
Zambiri za ERPS zimatengedwa mkati mwa R-APS PDU yomwe ndi imodzi mwamagulu a Ethernet OAM PDUs. Mawonekedwe a OAM PDU amtundu uliwonse wa Ethernet OAM amafotokozedwa mu ITU-T Rec. Y.1731.
Kusintha
Munthawi yanthawi zonse, kasinthidwe ka ERPS kumafuna kuti zochitika za CFM MEP zikhazikitsidwe mbali zonse ziwiri zakuyenda kotetezedwa. Komabe, ngati mfundo za mphete zalumikizidwa kumbuyo ndi kumbuyo, ndiye kuti, osadutsa maukonde ena osinthira, mutha kudalira ulalo wakuthupi mwachindunji popanda kugwiritsa ntchito CFM MEP kuti chizindikiro chikulephereke. Zikatero, gwiritsani ntchito "sf-trigger link".
Wakaleample la kasinthidwe ka ERPS likuwonetsedwa pansipa, ndi kasinthidwe kogwirizana ndi CFM:
Kusintha kwa magawo
Mawu omasulira a ERPS global level CLI configuration command ndi:
Kumene:
Syntax ya ERPS level CLI configuration command ndi:
Kumene:
Wakaleample akuwonetsedwa pansipa:
Kugwiritsa ntchito control commands
Ma syntax a ERPS level CLI command ndi:
Kumene:
ExampLe:
Onetsani udindo ndi ziwerengero
Ma syntax a show erps CLI command ndi:
Kumene:
Exampndikuwonetsa ziwerengero:
Exampndikuwonetsa status:
Konzani mphete zitatu zosinthiraample
Makina atatu osinthira amapangidwa kuti awonetse momwe mawonekedwe a ERPS angasinthidwe. Maukonde akuwonetsedwa pansipa.
Malamulo otsatirawa azimitsa STP ndi LLDP, yambitsani C-Port pa Port 1 ndi 2 pama switch onse atatu.
Zosintha za 3 za munthu aliyense tsopano zakonzedwa motere:
Konzani CFM ndi ERPS pa Switch 1
Konzani CFM ndi ERPS pa Switch 2
Konzani CFM ndi ERPS pa Switch 3
Zolemba / Zothandizira
 |
MICROCHIP AN1286 Ethernet Ring Protection Switch Configuration [pdf] Buku Logwiritsa Ntchito AN1286, AN1286 Ethernet Ring Protection Switch Configuration, Ethernet Ring Protection Switch Configuration, Ring Protection Switch Configuration, Protection Switch Configuration |
