17.3-rasm. Vlan 10 va Vlan 20 dagi hostlarga
static IP address berish
17.4-rasm. Vlan 10 dagi hostlar dinamik IP addresslarni sozlash
17.5-rasm. Vlan 10 dagi hostlar dinamik IP address berish
Yuqoridagi rasmlardan ko’rish mumkinki(17.3 va 17.4-rasmlar). Vlan 10
dagi hostlar ip address olgan lekin vlan 20 dagi hostlar ip address olmagan.
Demak, vlan 20 nima uchun ip address olmaganligini
aniqlab ushbu xatolikni
bartaraf etishimiz kerak.
Komutator va marshrutizator qurilmalarida muammolarni aniqlash uchun
quyidagi buyruqlardan foydalaniladi:
–
Komutator uchun:
Show vlan
– vlanlarni ko’rish
Show vlan brief-
Show interface trunk-
Show ip arp-
Show mac-address-table-
Show ip interface brief show interface fastEthernet 0/1…
–
Marshrutizator uchun:
Show ip arp-
Show dhcp lease-
Show ip dhcp pool-
Show ip dhcp binding-…
17.6-rasm. Show vlan
17.6-rasmdan Vlanlarda muammo yo’qligini ko’rish mumkin.
17.7-rasm. Show interface
trunk
17.7-rasmdan muammo interfaceda ekanligini ko’rish mumkin. Vlanlarni
trunk portlarga biriktirishda vlan 20 biriktirilmasdan
qolib ketgan shuning uchun
vlan 20 dagi hostlarda dhcp xizmati ishlamagan. Topilgan muammo quyidagicha
bartaraf etiladi:
Switch#
Switch#conf t
Switch(config)#interface fastEthernet 0/9
Switch(config-if)#switchport trunk allowed vlan add 20
Switch(config-if)#
Muammo bartaraf etilganligini testlab ko’rish kerak(17.7-rasm)
17.8-rasm Testlash natijalari