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BI S 12BI S 12

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IPIP

IPIPIPIPIPIPIPIPIPIP

ClientClient

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Gii thieu dch vu DHCPGii thieu dch vu DHCP

Mi thit b trn mng nu dng giao thc TCP/IP th u phi c 1 a ch IP hp l, duy nht trn mng .

Nu my trm t t IP cho mnh hoc qun tr vin cu hnh cho tng my d sinh ra trng IP, v y l cng vic mt thi gian v khng m bo

Dch v DHCP cho php chng ta cp ng cc thng s cu hnh mng cho cc my trm.

Cc h iu hnh ca Microsoft v cc h iu hnh khc nh Unix hoc Macintosh u h tr c ch ny, c ngha l trn cc h iu hnh ny phi c mt dch v gi l DHCP Client.

DHCP l g?DHCP l g?

1 0 0 1 1 0 0 0

150 .

1 0 0 0 0 1 0 1 0 0 1 1 0 0 0 0 1 0 1 1 1 0 0 18 bits 8 bits 8 bits 8 bits

133 . 48 . 185 .8 bits 8 bits 8 bits 8 bits

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Khc phc c tnh trng ng a ch IP, gim chi ph qun tr h thng

Gip ISP tit kim s lng a ch IP tht (Public IP)Ph hp cho cc my tnh thng xuyn di chuyn

qua li gia cc mng (Laptop)Kt hp vi h thng mng khng dy (Wireless)

cung cp cc im Hostpot nh ti nh ga, sn bay, trng hc, phng hi tho

u im cau im ca DHCP DHCP

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ClientClient

Phng thc hot ng ca DHCP Phng thc hot ng ca DHCP

Khi Client khi ng, my s broadcast 1 gi tin DHCPDISCOVERDHCPDISCOVER, yu cu Server no m nhim vai tr DHCP phc v mnh. Gi tin ny c cha a ch MACMAC ca my Client.

BOOT

Client Server DHCP

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Server DHCP khi nhn c gi tin yu cu nu cn c th cung cp IP, s gi li cho Client gi tin DHCPOFFER, cho bit s cp cho Client 1 c IP trong khong thi gian nht nh, km theo l 1 Subnet Maskv c IP ca Server.

Phng thc hot ng ca DHCP Phng thc hot ng ca DHCP

ClientClient

Client Server DHCP

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Client s xem xt ngh ca Server trong DHCPOFFER, v broadcast li gi tin DHCPREQUEST chp nhn li ngh

Phng thc hot ng ca DHCP Phng thc hot ng ca DHCP

ClientClient

Client Server DHCP

OK!

Khi c IP ny s c Client s dngv Server s khng cp pht c IP cho bt c Client no khc trong nhngphin giao dch sau.

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Server nhn c gi tin chp nhn ca Client s gi ngc li gi tin DHCPACK nh l 1 hip c, cho bit IP , Subnet Mask , thi gian s dng chnh thc c p dng

Phng thc hot ng ca DHCP Phng thc hot ng ca DHCP

ClientClient

Client Server DHCP

Ngoi ra cn km theo cc thng tincu hnh b sung nh : c Gatewayc DNS Server nu c

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Cai at DHCP

Chn Start Setting Control Panel Trong Control Panel double click vo

Add/Remove Programs

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Trong hp thoi Add/Remove Programs, nhp chn mc Add/Remove Windows Components

Trong Windows Components Wizard, t sng Networking Services v nhn nt Details

Click

Ci t DHCP (tt)

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Trong hp thoi Networking Services nhn chn mc Dynamic Host Configuration Protocol (DHCP) v nhn OK

ClickClick

ChnChn

Ci t DHCP (tt)

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Quay v hp thoi Windows Components Wizard, nhn chn Next

Win s cu hnh cc thnh phn v ci t dch v DHCP.

Cui cng nhn Finish kt thc

Ci t DHCP (tt)

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Cau hnh cho dv DHCP

Sau khi ci t xong ta s thy biu tng DHCP trong menu Addministrative Tools

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Khi ng dv DHCP ln Trong ca s DHCP, nhp phi ln biu tng Server

ca mnh chn mc New Scope trong popup menu

Cu hnh DHCP (tt)

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Trong hp thoi Scope Name, nhp vo tn v ch thch, gip cho vic nhn din Scope ny, ri nhn Next

Cu hnh DHCP (tt)

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H.thoi IP Address Range xut hin. Nhp vo c bt u v kt thc ca danh sch c cn cp pht

Sau ch nh Subnet Mask bng cchcho bit s bit 1 hocnhp vo chui sNhn chn Next

Cu hnh DHCP (tt)

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Trong h.thoi Add Exclusions, nhp vo nhng c no ta cn loi ra khi nhm c ch nh trn.

Cu hnh DHCP (tt)

Cc c loi ra ny ta s dng t chocc my tnh cnc IP tnh hoc dnhdng cho mc ch no

loi 1 c duy nht, ta ch nhp trong Start IP Addressri nhn Add

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Trong h.thoi Lease Duration, cho bit thi gian cc my trm c th s dng c IP ny. Default cc my trm s c lm mi li c IP khi s dng thi gian cho php

Mc nh l 8ngy. Sau thi gian Client sxin c khc

Cu hnh DHCP (tt)

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H.thoi Configure DHCP Options xut hin. Ta c th ng cu hnh cc tu chn ph bin (trn), hoc khng ng , vic thit lp ny thc hin sau (di). Chn ng v nhn Next

Cu hnh DHCP (tt)

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Khai bo c Router (Default Gateway) nu c trong hp thoi ny, nhn Add v nhn Next

Cu hnh DHCP (tt)

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Khai bo tn Domain trong h.thoi ny (nu my c gia nhp domain), v khai bo c IP ca DNS Server, Next

Cu hnh DHCP (tt)

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Trong hp thoi ny khai bo c IP ca WINS Serverdng phn gii cc tn NetBIOS thnh c IP. (Khng dng, c th b qua)

Cu hnh DHCP (tt)

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Kch hot Scope trong h.thoi ny. Scope ch c th cp pht c IP cho my con khi c kch hot, nhn Next.

Cu hnh DHCP (tt)

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Nhn finish kt thc

Cu hnh DHCP (tt)

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Cau hnh cac tuy chon DHCP

L cc thng tin ph gi km theo c IP khi cp pht cho Client

C th ch nh tu chn 2 mc : Scope v Server.

Trong ca s DHCP, bn tri, click chn Server tm Server Option hocclick mt Scope no tm Scope Option

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Right click ln mc tu chn tng ng v chn Configure Options

Hp thoi cu hnh cc tu chn xt hin

Sau khi chn xong hoc chnh sa cc tu chn xong, nhn OK kt thc

Cu hnh tu chn DHCP (tt)

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Trong ca s DHCP, mc tu chn tng ng s xut hin cc thng tin cp pht

Cu hnh tu chn DHCP (tt)

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Cau hnh danh rieng a ch

Trong bn tri ca s DHCP chn Reservation, right click New Reservation

Nu cn dnh ring a ch IP cho 1 my tnh c bit no trn mng, ta s cu hnh n trong Reservation

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Xut hin hp thoi New Reservation. t tn cho mc ny trong Reservation name

Nhp IP s cp cho my trong IP Address

Nhp c MAC vo MAC Address Description : m t

DHCP only : ch cho php Client s dng giao thc DHCP xin IP

BOOTP only : ch dng giao thc BooTP xin IP

Both : Chp nhn c 2 giao thc

Cu hnh dnh ring a ch

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Address Pool

Dy a ch IP dnh cp pht

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Address Leases

192.168.1.5 w06 3/26/2006 4:23:19 PM

192.168.1.8 w02 3/26/2006 4:26:12 PM192.168.1.9 w12 3/27/2006 9:26:12 AM

Nhng a ch IP cp pht cho cc Client

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Reservation

Cc a ch IP dnh ring cho nhng my c bit

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Vy l ta ci t xong dch v DHCP

C th tm ngng hot ng hay hot ng li bng cch:

Cu hnh dnh ring a ch

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