Cu hnh VLAN bng Packet TracerA. Mc tiu ca bi lab: Bit c nhng u
im VLAN cng nh cch cu hnh VLAN trn Cisco Switch. B. Chun b cho bi
lab: S dng Router, Switch v PC1, PC2 c kt ni v cu hnh IP nh hnh
sau.
Chng ta s cu hnh cho Router v Switch h tr VLAN. Mc ch ca lab ny
l thit lp cc PC1 v PC2 c th ping c cho nhau thng qua switch. Sau ta
s thay i cc VLAN trn switch chng khng th ping cho nhau cng nh khng
th ping ti router c na. Cui cng ta s thay i cu hnh trn Switch cc PC
thuc cng VLAN v xem xt rng chng li c th ping cho nhau. C. Cc bc thc
hin: 1. Bt u bng vic cu hnh a ch IP cho cng Fa0/0 ca Router nh
sau.
2. Kt ni ti PC1 v t IP cho n nh sau
3. Kt ni ti PC2 v t IP cho n nh sau
4. T PC2, kim tra ping thnh cng ti PC1 v Router
5. Gi kt ni ti Switch v cu hnh VLAN. Mc nh, th tt c cc cng gi l
port trn switch u nm trong cng VLAN c ID l 1 ngha l VLAN 1. Trong
trng hp ny ta s thit t cho port Fa1/1 ca switch hin ang ni vi PC1
vo mt VLAN c ID l 22 tch bit vi cc port cn li. Bt u to mt VLAN mi c
ID l 22 nh sau
Nu mun bn c th t tn cho VLAN 22 ny gip nhn dng v phn bit d dng
hn gia cc VLAN, nh trong hnh trn ta t l pc1-pc2. 6. Gi ta cn gn cc
port vo VLAN 22 va to bc 5. Di y s gn port Fa1/1 ca Switch ang ni
vi PC1 vo VLAN 22.
7. Tip n ta kt ni li vo PC2 v th ping ti PC1 v Router th kt qu
nh sau:
Nh hnh trn ta thy, PC2 c th ping ti Router nhng PC1 khng th ping
c PC1. Ti sao li nh vy? Trn Switch, ta cu hnh cho VLAN 22 ch gm
port Fa1/1. iu ny c ngha rng tt c cc port cn li l Fa0/1, Fa2/1
-> Fa5/1 vn cn nm trong VLAN 1. V th, khi PC2 hin ang ni vi port
Fa2/1 gi gi tin ping ti Switch th cc gi tin c nh du l VLAN 1 v cng
ng ngha vi vic chng ch c th i ra khi cc port thuc VLAN 1 m thi. V
kt qu l cc gi tin ping t PC2 khng th i ra khi port Fa0/1 thuc VLAN
22 ti PC1. 8. Gi ta li kt ni tr li Switch v cu hnh VLAN cho port
Fa2/1 hin ang ni vi PC2 nm trong VLAN 22 nh sau
9. Gi kt ni li vi PC2 v th ping li ti Router v PC1
S khc l y l g? Hin PC2 c th ping ti PC1 nhng vn khng th ping ti
Router. L do l v lc ny gi tin ping t PC2 c nh du l VLAN 22, tc l n
ch c th i ra khi port Fa0/1 ang c ni vi PC1 v cng thuc VLAN 22. y
cng chnh l mc ch ca bi lab m ta mun thc hin.
10. Kt ni tr li Switch v s dng lnh show vlan hoc show vlan brief
xem xt vic phn nh VLAN
11. Cui cng, kt ni li vo Switch v gn port Fa0/1 vo VLAN 22 cho
php c 3 thit b Router, PC1, PC2 c th ping c ln nhau.
12. Kim tra li vic ping thnh cng gia Router, PC1 v PC2 bng cch t
Router ping ti PC1 v PC2
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