NAT configuration on MSR3024 with Dual ISP

[korobkinaa]

Hello.

We have MSR3024 with 2 ISPs connected. Every ISP allocates a pool of PA IP-addresses, /27. The goal is to configure equal-cost load-balancing between ISPs for incoming (from Internet to DMZ Servers, Static NAT) and outgoing (Internet surfing, NPAT) connections.

Unfortunately, MSR allows only to configure one Static NAT translation between Inside Local and Inside Global IPs. For example:

!

[MSR3024]nat static outbound 192.168.1.10 1.1.1.1

[MSR3024]nat static outbound 192.168.1.10 2.2.2.2

The Local IP address has been used by another outbound static NAT mapping.

!

Need help.

[Vince-Whirlwind]

You can't load-balance connections because the router is a Layer-3 device.

You need a Layer-7 device in your gateway to do this.

[korobkinaa]

How about this solution:

!

interface GigabitEthernet1/0

 description ISP-1

nat server protocol tcp global 1.1.1.1 inside 192.168.1.10

!

interface GigabitEthernet2/0

 description ISP-2

nat server protocol tcp global 2.2.2.2 inside 192.168.1.10

Can anybody explain the order (ACL, NAT, Routing and so on) in which incoming packet is processing on MSR

Thanx)