dhcp request failed

[gezachew]

I create a network that has two VLANs in one subnet. I set switch 6 as a server and switch 5 as a client. when I select DHCP in pc it says failed. This is the running configuration on the router. please help me.

ip dhcp excluded-address 192.168.11.1
ip dhcp excluded-address 192.168.40.1
!
ip dhcp pool vlan
dns-server 8.8.8.8
ip dhcp pool finance
network 192.168.40.0 255.255.255.0
default-router 192.168.40.1
dns-server 8.8.8.8
ip dhcp pool cctv
network 192.168.11.0 255.255.255.0
default-router 192.168.11.1
dns-server 8.8.8.8
!

interface FastEthernet0/0
ip address dhcp
duplex auto
speed auto
!
interface FastEthernet0/0.11
encapsulation dot1Q 11
ip address 192.168.11.1 255.255.255.0
!
interface FastEthernet0/0.40
encapsulation dot1Q 40
ip address 192.168.40.1 255.255.255.0

[balaji.bandi]

Config does not look good, we only have half the information, until we know the full configuration - we only assuming here..that not going to anywhere of the solution. So you need to post complete switch 5 and 6 config, (show run) - also tell us where is PC connected?

[gezachew]

thank you for your comment below is the screenshot of the network and an attached pkt file. password is baby

[Georg Pauwen · Accepted solution]

Hello,

the Vlans configured on your subinterfaces did not correspond to the Vlans configured on the switches. The subinterfaces were 11 and 40, on the switches, Vlans 2 and 4 were configured. I changed 2 to 11m and 4 to 40.

Attached the revised file (saved in PT version 8).

[gezachew]

thankyou for your support. it worked now I realized that encapsulation dot1q 11 means referring subnet not VLAN id. 10nx.

[paul driver]

Hello

FYI -  DOT1Q x  represens the vlan the subnet resides in.

On the rtr

interface FastEthernet0/0.11
encapsulation dot1Q 2  
ip address 192.168.11.1 255.255.255.0

interface FastEthernet0/0.40
encapsulation dot1Q 4
ip address 192.168.40.1 255.255.255.0

[gezachew]

thankyou too.

[balaji.bandi]

Thank you for the information, unfortunately, I do not use PT, someone sure assists you in this community.

[gezachew]

yes, I check it on my pt file.

[Faresnani]

It appears that in the router you did the VLAN ID wrong 

you have CCTV VLAN with ID 2, need to change the encapsulation ID to 2 not 11, and same with the finance VLAN from 40 to 4