R1 didn't get ip from the R2 DHCP

[Ibrahim Jamil]

Hello Guys

R1(g0/0)  ---- SW1-----R2 ,

R1 G0/0 Configured with ip address DHCP

R2 is DHCP Server , SW1 does snooping on VLAN 10

R2

--

IP dhcp pool POOL

network 10.10.10.0 255.255.255.0

default-router 10.10.10.1

!

SW1

===

ip dhcp snooping

ip dhcp snooping vlan 10

!

int g1/0/1

desc connected to R2 DHCP

ip dhcp snooping trust

ip dhcp limit rate 200

R1 didn't get ip from the R2 DHCP , what is missing ,

thanks all

Ibrahim

[Ian Walker]

Is SW1 a layer 3 switch?
You'll need ip helper address adding to L3 switch

[Ibrahim Jamil]

Hello Ian

it L2 Switch sir

Ibrahim

[paul driver · Accepted solution]

Hello

Do you get ip address if snooping is disabled?

if so trying disabling option 82 ( if enabled) when snooping is active

review this

res
Paul

[Ibrahim Jamil]

Hello Paul

so the below commands for L2 SW1

ip dhcp relay information trust all (Global)

!

!

int X/X

Desc to R2 DHCP Server

ip dhcp relay information trusted (interface)

pls advise

Ibrahim

[paul driver]

Hello

you didn't mention it your rtr1  was  able to obtain a lease when snooping was disabled?

[Ibrahim Jamil]

Yep , when snooping is OFF , R1 get IP from R2

thanks