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New Member

configure multiple dhcp on ASA 5505


I want to configure multiple DHCP pool on ASA. that I create like

int e0/2

no shut

interface Ethernet0/2.10
vlan 10
nameif inside10
security-level 100
ip address

interface Ethernet0/2.20
vlan 20      
nameif inside20
security-level 100
ip address

dhcpd address inside10
dhcpd dns x.x.x.x  y.y.y.y interface inside10
dhcpd enable inside10

dhcpd address inside20
dhcpd dns h.h.h.h  z.z.z.z interface inside20
dhcpd enable inside20

I have following query...

1. int e0/2 work as trunk port, is it? 

    any special confiduration require other than dot1Q?

2. How can I configure inside interface?

    is it like,

    access-group inside_access_in_1 in interface inside10

    access-group inside_access_in_1 in interface inside10

3. How can I configure static NAT ?

4. How can i configured inside route?

5. How can I configured default NATing?

6. On which interface I access ASA? currently using inside interface.


Dhaval Dikshit


configure multiple dhcp on ASA 5505

1) For trunking you have already assigned vlans to subinterfaces noextra config reuired on ASA.

2) This is the way access-list is assigned to interface. Same access-list inside_access_in_1 should exist on ASA .This will provide you controlling traffic from host falls in inside 10.

3) Depend upon ASA version-  for ex-   nat(inside10,outside) 2.x.x.x.x netmask For NAT you should configure one more interface which will be outside say for internet. Host will get natted with 2.x.x.x.

4) Lets say you have router inside zone - and subnet 10.x.x.x /24 behind that.

     route inside 10.x.x.x

5) no term is called default nat it should be static/dynamic/policy/pat

6) you can access any of the interface - ssh inside/outside



New Member

configure multiple dhcp on ASA 5505

Thanks Ajay,

Just want to more specific,

5) Shell I put dynamic NAT for each inside sub interface ?

Currently I'm using as inside subnet as user and managment both.

  • Now I introduce 2 new subnets i.e. and (configure DHCP for both subnet on ASA) as USER vlan and existing as managment.
  • Pls. suggest key features that I have to take care and need to configure for my requirment.

Thanks once again...


configure multiple dhcp on ASA 5505

No matter how many interfaces you have if you just want to give them internet access-use PAT.

For ex. nat (inside) 1 its for inside users same u can go for nat (dmz)

New Member

configure multiple dhcp on ASA 5505

Hi Ajay,

Thanks a lot for your kind support.



configure multiple dhcp on ASA 5505

Happy to help

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