Dhcp snooping

[amrashraf1]

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If i have more than one vlan on switch can i make ip dhcp snooping on only one vlan of them and all another vlan on switch can take ip from my dhcp server or not for example :

#ip dhcp snooping

#ip dhcp snooping vlan 8 

#interface f0/0

#ip dhcp snooping trust 

This config make client in vlan 8 take ip from trusted port but in the same switch have vlan12 the question vlan 12 can take ip or not

[amrashraf1]

Cisco switch 3650

[MHM Cisco World]

SW-SW"3650" "this is DHCP Server"?

[amrashraf1]

Yes 

[MHM Cisco World]

so you config trust and dhcp snooping in first SW and this SW send DHCP into other SW"3650" for IP assign ?

[amrashraf1]

Yes sw 2960 requsest ip from 3650

[amrashraf1]

is there any problem

[MHM Cisco World]

this is real not lab?

[amrashraf1]

Yes real !!! Whta is the problem my friend

There is any mistake

[MHM Cisco World]

Hi friend, 
SW2960-SW3650
Q1 is SW2960 config as L3SW?
Q2 is SW3650 also config as dhcp snooping?
Q3 the interface between two SW are L2 access or L2 trunk or L3 ?
Q4 when both VLAN config as DHCP snooping are both VLAN get the right IP address?

[amrashraf1]

Q1: is Access switch layer 2

Q2:not configure as dhcp snooping

Q3:layer 2 trunk

Q4:yes get right ip from dhcp

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[MHM Cisco World]

Can you share 

show ip dhcp snooping 

[amrashraf1]

but now i apply snoop for vlan 8 and 12 in order to vlan 12 can take ip 

[MHM Cisco World · Accepted solution]

I am so sorry but this is bug,
see attachment
sorry but you need to allow vlan for dhcp snooping.

[amrashraf1]

 true i have this version so ihave bug in this realse of ios thank u very much u r so professional man thnak u again 

[paul driver]

Hello
Did you perfrom the test i asked?
On the access-port that is in vlan 12 that doesn't have snooping enabled, trust that interface and see it the host then receives a dhcp allocation