Ty ch?n DHCP ?c h? tr? b?i khch hng

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ID c?a bi: 121005 - Xem s?n ph?m m bi ny p d?ng vo.
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D?ch v? my ch? Windows NT DHCP (Dynamic Host Configuration Protocol) cho php tr?nh ph?c v? DHCP ? cung c?p m?t danh sch cc ty ch?n c th? ?c g?i ? DHCP khch hng. Cc ty ch?n cung c?p thng tin c?u h?nh DHCP khch hng. Ty ch?n h? tr? b?i cc my ch? DHCP ?c ?nh ngh?a trong RFC 1533, v Khch hng Microsoft DHCP c th? ch?p nh?n ch? l m?t vi trong s? cc ty ch?n ny.

THNG TIN THM

Hi?n nay khch hng Microsoft DHCP c th? ch?p nh?n v s? d?ng hai sau ty ch?n:
   - DHCP Protocol Options
   - Information Options
				
LU ?: Gi tr? trong ngo?c () l m? s? cho m?i ty ch?n tng ?ng.

Ty ch?n giao th?c DHCP

Lo?i tin nh?n DHCP (53): ty ch?n ny ?c s? d?ng ? chuy?n t?i lo?i c?a cc DHCP th. M? cho ty ch?n ny l 53, v chi?u di c?a n l 1. Gi tr? php l? cho ty ch?n ny l:
   Value   Message Type
   -----   ------------
     1     DHCPDISCOVER
     2     DHCPOFFER
     3     DHCPREQUEST
     4     DHCPDECLINE
     5     DHCPACK
     6     DHCPNAK
     7     DHCPRELEASE
				
Th?i gian cho thu (51): Ty ch?n ny ?c s? d?ng trong m?t khch hng yu c?u (DHCPDISCOVER ho?c DHCPREQUEST) ? cho php khch hng ? yu c?u m?t th?i gian cho thu cho IP ?a ch?. Trong tr? l?i my ch? (DHCPOFFER), m?t my ch? DHCP s? d?ng ty ch?n ny xac ?nh gi thu n l s?n sng cung c?p. l trong giy, v ?c quy ?nh nh m?t s? nguyn d?u 32-bit. M? cho ty ch?n ny l 51, v chi?u di c?a n l 4.

Gia h?n th?i gian (58): Ty ch?n ny xc ?nh kho?ng th?i gian t? ?a ch? chuy?n nh?ng cho ?n khi khch hng qu tr?nh chuy?n ?i ? nh n?c RENEWING. Gi tr? trong giy v ?c quy ?nh nh m?t s? nguyn d?u 32-bit. M? cho ty ch?n ny l 58, v chi?u di c?a n l 4.

Rebind Time (59): Ty ch?n ny xc ?nh kho?ng th?i gian t? ?a ch? chuy?n nh?ng cho ?n khi khch hng qu tr?nh chuy?n ?i ? nh n?c REBINDING. Cc gi tr? trong giy v ?c quy ?nh nh m?t s? nguyn d?u 32-bit. Cc M? cho ty ch?n ny l 59, v chi?u di c?a n l 4.

Ty ch?n thng tin

M?t n? m?ng con (1): Ty ch?n m?t n? m?ng con xc ?nh m?ng con c?a khch hng m?t n? theo RFC 950 [5]. N?u c? hai m?t n? m?ng con v cc ty ch?n b? ?nh tuy?n ?c quy ?nh trong m?t th tr? l?i DHCP, ty ch?n m?t n? m?ng con ph?i l ?u tin. M? cho cc ty ch?n m?t n? m?ng con l 1, v chi?u di c?a n l 4 octet.

Router m?c ?nh (3): Ty ch?n b? ?nh tuy?n ch? ?nh m?t danh sch cc ?a ch? IP cho b? ?nh tuy?n trn m?ng con c?a khch hng. Router nn ?c li?t k theo th? t? s? thch. M? cho cc ty ch?n b? ?nh tuy?n l 3. Chi?u di t?i thi?u cho ty ch?n b? ?nh tuy?n l 4 octet, v chi?u di ph?i lun lun l m?t nhi?u 4.

DNS Server (6): Ty ch?n my ch? tn mi?n ch? ?nh m?t danh sch cc tn mi?n Tn my ch? tn h? th?ng (STD 13, RFC 1035 [8]) c s?n cho khch hng. Cc my ch? nn ?c li?t k theo th? t? u tin. M? cho tn mi?n ty ch?n my ch? tn l 6. Chi?u di t?i thi?u cho ty ch?n ny l 4 octet, v chi?u di ph?i lun lun l b?i s? c?a 4.

Tn mi?n (15): The Domain Name ty ch?n xc ?nh tn mi?n DNS m h? ph?c v? DHCP l ? ch? ?nh cc khch hng cho ? phn gi?i tn my ch? DNS.

H? ph?c v? WINS (NetBIOS tn my ch?) (44): The NetBIOS tn my ch? (NBNS) ty ch?n xc ?nh m?t danh sch c?a RFC 1001/1002 [19] [20] NBNS tn my ch? li?t k theo th? t? u tin. M? cho ty ch?n ny l 44. T?i thi?u Chi?u di c?a cc ty ch?n l 4 octet, v chi?u di ph?i lun lun l m?t nhi?u 4.

NetBIOS nt lo?i (46): The NetBIOS nt lo?i ty ch?n cho php NetBIOS trong khch hng TCP/IP ?c c?u h?nh ? ?c c?u h?nh nh m t? trong RFC 1001/1002. Gi tr? ?c quy ?nh nh m?t octet duy nh?t ? nh?n d?ng khch hng g? nh sau:
   Value         Node Type
   -----         ---------
    0x1           B-node
    0x2           P-node
    0x4           M-node
    0x8           H-node
				
Trong bi?u ? trn y, m?i gi tr? ch? ra m?t s? trong c s?-16 (h? th?p l?c phn). M? cho ty ch?n ny l 46 v chi?u di l 1.

NetBIOS ph?m vi Id (47): The NetBIOS ph?m vi ty ch?n xc ?nh cc NetBIOS qua TCP/IP ph?m vi tham s? cho cc khch hng nh quy ?nh trong RFC 1001/1002. Xem m? [19], [20], v [8] ?i v?i nh?ng h?n ch? t?p k? t?. M? cho ty ch?n ny l 47 v chi?u di t?i thi?u l 1. B?t k? ty ch?n khc ? nh?n ?c b?i khch hng ang b? b? qua v b? i, v khng c s?n thng qua b?t k? c ch?. Xin lu ? r?ng ph?m vi NetBIOS ID l tr?ng h?p nh?y c?m.

Khm ph b? ?nh tuy?n (31) (Windows 2000 ho?c m?i hn): ki?m tra RFC 2132 cho bi?t thm chi ti?t.

Classless l? (249) (Windows XP ho?c sau ny): ki?m tra trang Web sau y ? bi?t chi ti?t:
http://www.IETF.org/RFC/rfc3442.txt
T?nh router(33) (Windows ho?c sau ny): ki?m tra RFC 2132 cho bi?t thm chi ti?t.

LU ?: Khch hng DHCP c th? thay ?i thi?t ?t ng k? theo ?nh ngh?a c?a quy t?c trong:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Dhcp\Parameters\Options\Ty ch?n ID
M?i ng?i trong cc ty ch?n ny c m? tng ?ng trong ?ng d?ng khch DHCP r?ng, trong s? nh?ng ng?i khc, c?n ph?i chuy?n ?i d? li?u tr?c khi n c th? ?c thm vo registry Windows NT. V? v?y, n khng th? ?c thm b? sung ch?a kha ? y l khng c chuy?n ?i d? li?u s? di?n ra.

Thu?c tnh

ID c?a bi: 121005 - L?n xem xt sau cng: 17 Thang Tam 2011 - Xem xt l?i: 2.0
p d?ng
  • Microsoft Windows NT Server 3.51
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 3.5
  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows 95
T? kha:
kbnetwork kbmt KB121005 KbMtvi
My d?ch
QUAN TRONG: Bi vi?t ny ?c d?ch b?ng ph?n m?m d?ch my c?a Microsoft ch? khng ph?i do con ng?i d?ch. Microsoft cung c?p cc bi vi?t do con ng?i d?ch v c? cc bi vi?t do my d?ch ? b?n c th? truy c?p vo t?t c? cc bi vi?t trong C s? Ki?n th?c c?a chng ti b?ng ngn ng? c?a b?n. Tuy nhin, bi vi?t do my d?ch khng ph?i lc no c?ng hon h?o. Lo?i bi vi?t ny c th? ch?a cc sai st v? t? v?ng, c php ho?c ng? php, gi?ng nh m?t ng?i n?c ngoi c th? m?c sai st khi ni ngn ng? c?a b?n. Microsoft khng ch?u trch nhi?m v? b?t k? s? thi?u chnh xc, sai st ho?c thi?t h?i no do vi?c d?ch sai n?i dung ho?c do ho?t ?ng s? d?ng c?a khch hng gy ra. Microsoft c?ng th?ng xuyn c?p nh?t ph?n m?m d?ch my ny.
Nh?p chu?t vo y ? xem b?n ti?ng Anh c?a bi vi?t ny:121005

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