HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 deployment guide (AG421-96001, March 2007)

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR DEPLOYMENT GUIDE 55
6 - POLICY-BASED ROUTING
D
EPLOYMENTS
Asymmetric HP EFS WAN Accelerator
Deployments with PBR
The following section describes asymmetric HP EFS WAN Accelerator deployments
with PBR. The examples in this section apply only if the clients are on one side of the
WAN and are connecting to servers on the other side of the WAN.
If the client-side HP EFS WAN Accelerator is on a different Layer-2 interface than the
clients on the router where PBR is configured, PBR can be enabled on a Layer-2
interface basis and redirect TCP traffic going to the server.
IMPORTANT: HP recommends you define a policy based on the source or destination IP and
not on the TCP source or destination ports because certain protocols use dynamic ports instead
of fixed ones.
Configuring
PBR Using the
CLI
The following section describes how to configure PBR using the HP EFS WAN
Accelerator Command Line Interface (CLI).
The following figure illustrates a network where PBR is enabled on the interface of the
client-side router connected to the Layer-2 switch that redirects traffic to the HP EFS
WAN Accelerator.
Figure 6-1. Client-Side, HP EFS WAN Accelerator Attached to a Router
The client-side router has a fastEthernet 0/0 interface attached to the Layer-2 switch
and fastEthernet0/1 attached to the HP EFS WAN Accelerator.
The server-side router has a fastEthernet0/0 interface attached to the Layer-2 switch.
This example uses the following IP addresses:
 Client-side. Clients=10.0.0.0/16, HP EFS WAN Accelerator=10.2.0.2/16,
Router(fastEthernet0/0)=10.0.0.1/16, Router(fastEthernet0/1)=10.2.0.1/16
 Server-side. Servers=10.1.0.0/16, HP EFS WAN Accelerator=10.1.0.3/16,
Router(fastEthernet0/0)=10.1.0.1/16