dhcp pool and vrf

[interfacedy]

Hi, VRF usually are used at interface so that making packet special.  Please the two below configurations. Is there any different impact on dhcp pool between the two configurations? Thank you

Configuration 1:

ip vrf test1
rd 100:10

!
ip dhcp pool test1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1

!

interface vlan 100

ip vrf forwarding test1
ip address 192.168.1.1 255.255.255.0

Configuration 2:

ip dhcp pool test1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1

!

interface vlan 100
ip address 192.168.1.1 255.255.255.0

[Georg Pauwen · Accepted solution]

Hello,

configuration 1 won't work with adding the line marked in bold to the DHCP pool. Other than that, the difference is obviously that the first configuration only works in conjunction with a VRF...what are you after exactly ?

Configuration 1:

ip vrf test1
rd 100:10
!
ip dhcp pool test1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
--> vrf test1
!
interface vlan 100
ip vrf forwarding test1
ip address 192.168.1.1 255.255.255.0

Configuration 2:

ip dhcp pool test1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
!
interface vlan 100
ip address 192.168.1.1 255.255.255.0

[interfacedy]

Thank you for your reply. After change as below, configuration1 and 2 would have the same effect? 

Configuration 1:

ip vrf test1
rd 100:10
!
ip dhcp pool test1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
vrf test1
!
interface vlan 100
ip vrf forwarding test1
ip address 192.168.1.1 255.255.255.0

[Georg Pauwen]

Hello,

one of the configs is without, the other with the VRF, so the latter only works if your clients are part of the VRF context as well.

I am still not really sure what you are asking...

[interfacedy]

Thank you Georg!