MAC e$11 MAC -Mr MW•MI MAC-IM
RS1 PSI lea 164
Hirsh 4.11: Tinh sin sang cao #4
Khi Chang ta di thiet lap duqc kha nang chiu loi cho by chuyen mach lap 2 va cho cac bij can bang tai, thi b0 Binh tuyen se la khuyit diem duy nhat con xot lai trong mo hinh mang hien c6. Hinh 4.12 the hien thiet kt bao ptim co hai by dinh tuyen..MOt nhom trunk veri hai hoc nhieu lien ket duqc sir dung de ket not den hai thiet bj chuyen mach. Nhem trunk cung cap hai lqi fch d6 la kha nang mo rOng va kha Wing chiu 18i. Tat ca cac lien ket trong nhom trunk duqc sir dung de cung cap mgt bang thong tang hgp bing yogi tang cac bang thong duqc cung cap beri mai lien ket trong nhom trunk. Neu men lien ket bj loi, luqng tai to dOng ducat chia se tren cac lien ket khac trong nhom trunk. Thuat toan dirge sir dung de phan phOi tai giOn cac lien ket va so the lien ket 118 trq trong nhom trunk phu thuOc vao cac thiet bi san phim duqc sir dung. Trong cac thiet ke truck do, mei lien ket gap phai sir co se bien cac be) can bang tai va b0 dinh tuyen trit nen ve dung. Trong thief ke dusk the hien trong hinh 4.12, chimg ta sir dyng cac nheim trunk de han the vin de nay.
V1P1 -1u 10040 Arse vin-141 104521 Standby San Me 191010 I V4P1 AN 141 10 14,11154andby VIP!-141 14915 21 Arse Sass IP-10 10 102
Chuang 4: Thiet ka mang voi bi) can bang tai DO Van Thinh — A13439
VItKr Irle141.111265.3 VW Meal 1490.4
141 14145.1 1//101152
10101010 10.101029 10101010 10 10 1010
MA[-111 MAC-10 MAC-Mt MAC -MI
ltS1 452 453 RS4
Hinh 4.12: Tinh sr5n sang cao #5
Trong thiet ke dugc the hien trong hinh 4.12, chimg ta sir clang hai be dinh tuyen cling met hic bang cach sir dung VRRP de cung cap tinh sari sang cao. Chung to sir clang hai dja chi IP VRRP, trong de mai dja chi IP duct s6 halt ben mOi be (Anil tuyen. Chung ta c6 the eau hinh tie• can bang tai 1 tro den dia chi IP1 VRRP vi be can bang tai 2 tro den dja chi IP2 VRRP cho tau lugng ra ben ngoei. Dieu pity chophop phan phoi ltru lugng ben ngoii phAi thong qua ca hai be djnh tuyen. MOt so sin pham ding cho phop phin phoi tai
tren nhieu tuyen dtrimg tinh. Trong trutmg hop nAy, chting ta c6 the xic (firth hai tuyen dueng tinh tren moi be can bang tai den mai dja chi IP VRRP, vi phan ph6i luu lugng truy cap tren ca hai be djnh tuyen.
Thief ke dugc the hien trong hinh 4.13 dai dien cho bien the c6 tinh sin sing cao trong thiet 1ce met earth tay; Thiet ke nAy gieri thieu bo chuyen mach ler 2/3 trai ngtrge voi be chuyen mach 16p 2 ket not veri may eh& Ngoiti ra, cac diem lien ket gina lx") chuyen mach lop 2/3 vi be djnh tuyen 41 (lien cho cac Han ket tiny chinh. Neu chung ta sir dung be chuyen mach lop 2 vi su dung cac diem lien ket by chinh nhtr dA bier., se c6 met Wing lap vi chung ta phiti chay STP. Bat cu khi nAo c6 STP, chin ta can can than ngAn chart cac lien ket de cung cap luong Itru lugng tai uu. Neu chimg ta sir dang ‘be chuyen mach lop 3 vi sir dung cac ket filar tren, chung ta se tranh dugc STP bang cach eau hinh cac mang con khde nhau. Trong !hi& ke par. mai 1)0 can bang tai truy cap den tat ca cite may chit. Nhung neu chimg ta mat be chuyen mach 16p 2/3, chting ta se mat met tiers so may chit vi ca be can bang tai dugc ket not den lx) chuyen mach. Nhung nhin chung, be chuyen mach 16p 2/3 thtremg it gap phid sa co hcrn so veri met may chit hay met be can bang tai, bOi vi c6 it tinh nang vi cAu hinh lien quan den be chuyen mach 16p 2/3.
Load I Balainfr 2 11PI -111 I* * 20 Mouthy Un- 111 1* IS 21 Mine Canary - 1011/10 Lod Elahorn VIM -111 100.20Arthe 111P2 111 141114541 fandby Canty WI .• It M101
Chucmg 4: Thiet k'e mang tr6i b0 can bang tai DO Van Thjnh — A13439
%IMP 1P1 - 111 110115
VRkP 11•2 -141.1411.10
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