Ngwá ọrụ kachasị maka nlekota netwọkụ na nchọpụta nsogbu taa bụ ọdụ ụgbọ mmiri Port (Span), makwaara dị ka ọdụ ụgbọ mmiri. Ọ na-eme ka anyị nyochaa okporo ụzọ network na-enweghị itinye aka na ọrụ na netwọkụ dị na mpaghara, gụnyere snaffer, ma ọ bụ ụdị ndị ọzọ nke network nyocha.
Ụfọdụ ndị na-ahụkarị bụ:
• Nsogbu Nchọpụta Nchọgharị site na njikwa nsuso / data data;
• Nyochaa batency na jetter site na iji na-enyocha ngwugwu VoIP;
• Nyochaa nyocha nke na-enweghị isi;
• Chọpụta anomalies site na inyocha okporo ụzọ netwọkụ.
Span okporo ụzọ nwere ike na-enyo enyo na ọdụ ụgbọ mmiri ndị ọzọ na otu ngwaọrụ ahụ, ma ọ bụ na-enyo na ngwaọrụ netwọk ndị ọzọ n'akụkụ 2 nke ngwaọrụ isi (RHPAN).
Taa, anyị ga-ekwu okwu banyere teknụzụ nlekota Internet na ntanetị nke a na-akpọ Esspan (onye na-ahụ maka ọdụ ụgbọ mmiri na-agbanwe agbanwe) nke a ga-ebufe gafee IP atọ. Nke a bụ ndọtị nke Span ka ọ na-aga n'ihu.
Ụkpụrụ arụmọrụ nke Esspan
Ka anyị buru ụzọ lee atụmatụ ISSPAN:
• Mpempe akwụkwọ nke ngwugwu site na ọdụ ụgbọ mmiri sitere na ebe a na-aga ebe a na-aga ebe a na-aga site na parting site na iji usoro ịmachi anya (GRE). A machibidoro ọnọdụ ahụ nke sava ahụ.
• Site na enyemaka nke onye ọrụ (UDF) nke mgbawa, a na-eme nke 1 ruo 126 site na ngalaba Ntọala, dị ka akara ngosi TCP na nnọkọ TDMA;
• na-akwado ịtọ ntọala;
• Na-akwado Ogologo Mmekọ Mmekọ (Pasket Slicing), na-ebelata nrụgide na sava lekwasịrị.
Site na njirimara ndị a, ị ga - ahụ ihe kpatara ISSPAN bụ ngwá ọrụ dị mkpa maka nyochaa netwọta dị n'ime ụlọ ọrụ data taa.
Enwere ike ichikota isi oru nke Esspan na uzo abuo:
• Ngosipụta nnọkọ: Jiri Esspan na-anakọta ihe niile mepụtara na ebe nchekwa ọhụrụ TCP (RDMMMMMMMMMMA) na ọkwa nkwado ndabere maka igosi;
• Nchọpụta nsogbu netwọkụ: na-ejide okporo ụzọ netwọkụ maka nyocha mmetụ mgbe nsogbu netwọọ pụtara.
Iji mee nke a, ngwaọrụ isi obodo kwesịrị ịzagharị okporo ụzọ nke mmasị onye ọrụ site na nnukwu igbe nke pụrụ iche ka ọ nwee ike iru ya na ngwaọrụ nnata. Ọzọkwa, mee ka ngwaọrụ nnata wepụta ma weghachite usoro mbụ a na-enyocha mbụ.
Ngwaọrụ nnata nwere ike ịbụ sava ọzọ na-akwado ịba ụba ngwugwu ISSPan.
Ụdị nke nyocha
Packet ndị na-eji eean na-eji GRE ma ziga ya na njedebe IP ọ bụla maka Ethernet. A ga-eme ihe achọrọ ugbu a.
Maka usoro ọmụmụ izu ụka nke ESSAPN, ihe ndị a bụ packet ngwugwu enyo nke ngwugwu ICMP:
Protoclol nke Essspan etolitela ogologo oge, na site na nkwalite nke ike ya, a kpụrụ ọtụtụ nsụgharị, a na-akpọ "Esspan". Ụdị dị iche iche nwere usoro isi dị iche.
A kọwara ya na ngalaba nke mbụ nke isi okwu:
Na mgbakwunye, ụdị Protocol dị na isi ihe GE na-egosikwa ụdị Esson dị n'ime. Thedị ụdị ubi 0x80be na-egosi ụdị nke II, na 0x22EB na-egosi ụdị nke ISSPan.
1. Ụdị m
Mpaghara nke ụdị nke ụdị m IP na-esi kpọmkwem n'elu isi nke mbụ enyo enyo. Achịcha a na-agbakwunye 38 bytes na mbụ etiti mbụ: 14 (Mac) + 20 (IP) + 4 (GRE). Uru nke usoro a bụ na ọ nwere nha isi kọmpat ma belata ọnụahịa nke nnyefe. Agbanyeghị, maka na ọ na-ese ọkọlọtọ na 0, ọ naghị ebu ubi agbatị na ụdị m anaghị eji m ọtụtụ, yabụ na ọ dịghị mkpa ịgbasawanye karịa.
Usoro isi nke GRE dị ka ndị a:
2. Pịnye II
Na ụdị nke II, C, K, S, S, S, S, Furms, na mpaghara isi nke ya niile 0 ma ọ bụghị n'ọhịa. Ya mere, egosiri ubi usoro a na-egosi na ụdị isi nke ụdị II. Nke ahụ bụ, ụdị nke ahụ nwere ike ịhụ iji nweta ngwugwu GRE, yabụ na enweghị ike idozi ọnụ ọgụgụ dị iche iche na-enweghị ike idozi n'ihi mmejọ netwọdi.
Usoro isi nke GRE nke ụdị II dị ka ndị a:
Ke adianade do, ụdị nke etiti II usoro II usoro na-agbakwunye isi nke 8-byte erpan n'etiti isi isi na nke mbụ.
Usoro isi nke ISSpan maka ụdị nke II dị ka ndị a:
N'ikpeazụ, ozugbo na-esote usoro onyonyo mbụ, bụ ọkọlọtọ 4-by Hota Ethernet Cyclic Retundancy Returdic Tyclic Returnancy (CRC).
Ọ dị mma ịmara na mmejuputa ihe, enyo enyo anaghị enwe ubi FCS nke mbụ etiti, kama ịgụta uru CRC ọhụrụ a na-emegharị dabere na Elfia dum. Nke a pụtara na ngwaọrụ nnata enweghị ike ịchọpụta usoro CRC izizi nke mbụ etiti ahụ, anyị nwere ike iche na ọ bụ naanị obere okpokolo agba na-enweghị atụ.
3. Pịnye III
Pịnye nke III na-ewepụta onye isi ala ma na-agbanwe agbanwe nke ọma, gụnyere ma dị na njikwa netwọdi, ma ọ bụ na nyocha intrusion, na nyocha na-egbu oge, na ndị ọzọ. Ihe ngosi ndị a kwesịrị ịma ihe niile mbụ nke enyo nke enyo ahụ wee gụnye ndị na-anọghị na mbụ ahụ n'onwe ya.
Isi ihe nke ISII III nke IIII gụnyere iwu nke 12-byte na ndepụta okwu 8-Byte - Sounseher akọwapụtara.
Usoro isi nke ISSPan maka ụdị nke III dị ka ndị a:
Ọzọ, mgbe enyo mbụ nke mbụ bụ 4-byte crc.
Dịka enwere ike ịhụ site na usoro isi nke ụdị nke III, na mgbakwunye na-ejigide ver, VLAN, Cos, a na-agbakwunye ọtụtụ ubi dị iche iche, dịka:
• bso: a na-egosi iguzosi ike n'ezi ihe nke data nke okpokolo nke a na-ebu site na Osppu. 00 bụ ezigbo etiti, 11 bụ ihe ọjọọ, 01 bụ obere etiti, 11 bụ nnukwu osisi;
• Ogemestimp: Ebubatala site na ngwaike elekere na usoro oge. Ubi nke 32-bit a na-akwado opekata mpe 100 Microsecons nke Timestamp;
• A na-eji ụdị mpempe akwụkwọ (p) na etiti (ft): A na-ejikarị ya eme ihe nke mbụ Etherpan na-ebute ma otherpan na-ebute na Ethernet Frames ma ọ bụ ngwugwu IP.
• NJ HW: Ihe nchọpụta pụrụ iche nke engine nke egwe-ala n'ime usoro;
• gra (monamp motulality): na-akọwapụta motulality nke igwefoto. Dịka ọmụmaatụ, 00B na-anọchite anya 100 Microcond (01B 100 nanosecontity, 10b Iee)
• Platf id vs. Online ihe omuma a na-egosi na ọdịnaya dị iche iche dabere na ọnụahịa platif.
Enwere ike iji ya gosipụta na mpaghara isi dị iche iche kwadoro na ngwa ISSPan mgbe niile, ọbụlagodi njehie nchịkọta ma ọ bụ okpokolo agba agba, ebe ị na-ejikwa ngwugwu ahụ na VLAN. Na mgbakwunye, enwere ike ịgbakwunye ozi oge ochie na mpaghara ozi ndị ọzọ na etiti nke ọ bụla na-eme ihe.
Site na ndị isi atụmatụ Esspan, anyị nwere ike nweta nyocha nke netwọkụ ọzọ, wee banye na ACL kwekọrọ na usoro nke netwọọdụ ndị anyị nwere mmasị na ya.
Nchọpụta nke NJIRI NKE RDMA
Ka anyị were teknụzụ Esspan iji nweta nhụgharị RDMA Formy na ọnọdụ RDMA:
Rdama: Nnweta ebe nchekwa dị n'ime ime ihe nkesa na-enyere gị aka ịgụ ma dee ebe nchekwa nke ihe nkesa B site na iji bandwidth, na-enweghị ike, na obere ọrụ. A na-ejikarị ya na nnukwu data na arụmọrụ ekesara dị elu.
Rocev2: RDMMA N'IME ETETE ETETNE 2. Ihe ndekọ RDMA na-etinye na isi UDP. Nọmba ọdụ ụgbọ mmiri bụ 4791.
Ọrụ kwa ụbọchị na ndozi nke RDMMMMA chọrọ ịnakọta usoro akwụkwọ ndekọ dị iche iche na mkpu dị iche iche, yana ihe ndabere maka ịchọta nsogbu ndị na-adịghị mma. Ejikọtara ya na ISSPan, enwere ike ijide ihe data, enwere ike ijide ngwa ngwa iji nweta microcond na-ebugharị data dị mma na ọnọdụ nchịkwa Protocol nke usoro ịgbanyụ mgbawa. Site na ọnụ ọgụgụ data na nyocha, RDMA na-ebugharị nyocha dị mma na njedebe.
Iji nweta nlele nke RDAM nnọkọ RDAM, anyị chọrọ ISSPan ka dakọtara Keywords maka usoro mmekọrịta RDMMA mgbe ọ na-enyo enyo, anyị kwesịrị iji ndepụta ndị ọkachamara.
Nkọwapụta ọkwa dị larịị
UDF mejupụtara ubi ise: Udf isi okwu, ala ụlọ, mpaghara, mpaghara bara uru, na nkpuchi. Enwere ike iji oke site na ikike nke ndenye ngwaike, enwere ike iji udfs asatọ. Otu udf nwere ike dakọtara ọnụ abụọ.
• Isi okwu UDF: UDF1 ... Udf8 nwere isi okwu asatọ nke ngalaba UDF
• Baace ubi: na-egosipụta mmalite mmalite nke ubi UDF. Ndị a
L4_header (ọdabara na RG-S6520-64cq)
L5_header (maka rg-s6510vs8cq)
• Gbanyụọ: na-egosi oge a dabere na ala. Uru bara uru sitere na 0 ruo 126
• Ubi Uru: uru dakọtara. Enwere ike iji ya na mpaghara nkpuchi iji hazie uru a ga-ekwekọ. Ihe bara uru bụ abụọ
• Nkịtị Nta: nkpuchi, uru dị mma
(Gbakwunye: Ọ bụrụ na a na-eji ọtụtụ ndenye na otu UDF Ahịa, isi na mpaghara mpaghara ga-abụ otu.)
Ndekọ abụọ ahụ jikọtara ọnụ na RDMA Pamine Secon bụ ngwugwu ọkwa mkpọsa (CNP) na nkwenye na-adịghị mma (NAK): Nak): Nak): Nak): Nak): Nak):
A na-emepụta nke mbụ site n'aka nna nnata ozi Ecn zitere site na ngbanwe ahụ (mgbe ụlọ na-eweta ihe na-erute ọnụego), nke nwere ozi gbasara mkpọchi. A na-eji nke ikpeazụ eme ihe gosipụta RDMA nnyefe nwere ozi nzaghachi ọnwụ.
Ka anyị leba anya na otu esi eme ka ozi abụọ a dakọtara site na iji ndepụta ndị ọkachamara na-eme ihe:
Ndepụta ndị ọkachamara na RDMA
Onwere ikike ọ bụla ọ bụla eq791Udf 1 l4_header 8 0x8100 0xffs(Dakọtara rg-s6520-64cQ)
Onwere ikike ọ bụla ọ bụla eq791udf 1 l5_header 0 0x8100 0xffs(Dakọtara RG-s6510vs8cQ)
Ndepụta ndị ọkachamara na RDMA
Onwere ikike ọ bụla ọ bụla eq791udf 1 l4_header 8 0x1100 0xff00 Udf 2 l4_header 20 0x6000 0xffs(Dakọtara rg-s6520-64cQ)
Onwere ikike ọ bụla ọ bụla eq791udf 1 l5_header 0 0x1100 0XFF00 UDF 2 l5_header 12 0x6000 0xffs(Dakọtara RG-s6510vs8cQ)
Dị ka nzọụkwụ ikpeazụ, ị nwere ike iji oge RDMA na-ahụ anya site na iji bulie ndepụta ndọtị ọkachamara n'ime usoro ihe kwesịrị ekwesị.
Dee na nke ikpeazụ
Esspan bụ otu n'ime ngwaọrụ dị egwu na taa na netwọkụ etiti etiti, okporo ụzọ netwọ dị mgbagwoju anya, na-arịwanye elu na netwọk ọrụ na ndozi.
Site na ogo nke ugo nke O & M, Teknụzụ dị ka NetConf, webcconf, na GRPC a ma ama n'etiti ụmụ akwụkwọ O & M. Iji GPC dị ka usoro iwu na-emebi emebi maka iziga okporo ụzọ enyo na-enwe ọtụtụ uru. Dịka ọmụmaatụ, dabere na protocol / 2 nke abụọ, ọ nwere ike ịkwado usoro ịkwanye nkwanye ugwu n'okpuru otu njikọ ahụ. Site na onye na-a protobuf na-emegharị, a na-ebelata ogo ozi site na nke ọkara site na usoro JSON, na-eme ka nnyefe data ngwa ngwa. Cheedị echiche, ma ọ bụrụ na i jiri ISSPAN nwee mmasị ma ziga ha n'ihe nkesa nyocha na GRPC, ọ ga - eme ka ọ dịkwuo mma nke netwọk na mmezi?
Oge Post: Mee-10-2022
