QoS in Virtual In-Path and Out-of-Path Deployments
You can use QoS enforcement, on both inbound and outbound traffic, in virtual in-path deployments (for example, WCCP and PBR) and out-of-path deployments. In both of these types of deployments, you connect the SteelHead to the network through a single interface: the WAN interface for WCCP deployments, and the primary interface for out-of-path deployments. You enable QoS for these types of deployments:
Configure subnet side rules appropriately with LAN IP subnets on the LAN side. The subnet side rules define which part of the interface traffic belongs to the LAN side.For information about subnet side rules, see the SteelHead Management Console User’s Guide.
Set the WAN throughput for the network interfaces to the total speed of the LAN and WAN interfaces, or to the speed of the local link, whichever number is lower.Configure QoS as if you have deployed the SteelHead in a physical in-path mode.Figure 6‑12 shows two SteelHeads are deployed in a virtual in-path deployment. The client side IP subnets (192.168.10.0/24 for the client side SteelHead and 172.30.10.0/24 on the server side SteelHead) need to be configured as LAN-side subnets in the Subnet side rules table.
Figure 6‑12. Virtual In-Path Example
