topic Re: DHCP snooping in Network Security

DHCP snooping

M.Sultan — Thu, 14 Dec 2023 09:38:30 GMT

Hello guys

I configured DHCP snooping on SW1.

#ip dhcp snooping
#ip dhcp snooping vlan 1
#interface fast0/0
#ip dhcp snooping trust
#no shutdown

My endpoint is connected to interface fast0/1, Now my endpoint PC taking APIPA.

Before snooping i tested my DHCP server is OK!

My practice lab is Packet tracer v8.2 which is latest, and other lab is Pnetlab in both simulator it doesn't work, i want to know what its not working cause its the third day is juggling to resolve it.

Re: DHCP snooping

M02@rt37 — Thu, 14 Dec 2023 09:41:57 GMT

Helo @M.Sultan

Please share your PT lab in a zip file here.

Re: DHCP snooping

MHM Cisco World — Thu, 14 Dec 2023 09:44:30 GMT

No ip dhcp snooping information option

This need to make server accept dhcp request

MHM

Re: DHCP snooping

M.Sultan — Thu, 14 Dec 2023 09:44:57 GMT

I did still not working !!!

Re: DHCP snooping

M.Sultan — Thu, 14 Dec 2023 09:46:53 GMT

#no ip dhcp snooping information option

i run this command on trusted interface but still not working.

Re: DHCP snooping

MHM Cisco World — Thu, 14 Dec 2023 09:47:56 GMT

Can you share all config here

MHM

Re: DHCP snooping

MHM Cisco World — Thu, 14 Dec 2023 09:49:18 GMT

This command need to apply in global mode not on interface mode

MHM

Re: DHCP snooping

balaji.bandi — Thu, 14 Dec 2023 09:51:03 GMT

Follow below thread :

https://community.cisco.com/t5/network-security/dhcp-snooping/m-p/4977548#M1106897

Re: DHCP snooping

M.Sultan — Thu, 14 Dec 2023 09:52:51 GMT

this command is not appearing on switch except to run it on specific interface.

Re: DHCP snooping

M.Sultan — Thu, 14 Dec 2023 09:54:40 GMT

i will share later today, i don't have access to my lab now.