Riverbed SteelHead 3070-SD, User Manual

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16 | Configuring Virtual SteelHead WAN Optimization
Assigning the in-path IP address and default gateway in SCM
• When WAN optimization is enabled in SCM, there is a momentary interruption to service as the
SteelConnect is reconfigured with its SteelHead LAN and WAN interfaces.
When WAN optimization is enabled, a virtual SteelHead instance is automatically provisioned by the
system. The primary port on the SteelHead SD appliance is connected directly to the primary interface
of the virtual SteelHead instance.
The virtual SteelHead instance is configured with a single in-path interface pair (LAN/WAN). Unlike
physical SteelHead appliances or their virtual equivalents that exist outside of an SD-WAN service-
chained deployment, the number of in-path interfaces is irrelevant. For consistency and compatibility,
the in-path interface pair is configured as LAN0_0 and WAN0_0.
Assigning the in-path IP address and default gateway in SCM
The first step is to assign an in-path IP address within the LAN zone for the site. You choose an IP address
for the LAN zone in which the SteelHead SD is installed. You will use this IP address to configure the in-
path interface and default gateway on the virtual SteelHead instance.
These instructions assume that you have configured the primary and LAN ports on the SteelHead SD
appliance in SCM:
• The LAN port is configured as a single-zone uplink for the SteelHead WAN optimization service. By
default, the LAN port is disabled on SteelHead SD appliances unless it is explicitly enabled. If you
don't enable the LAN port, SteelConnect won’t see either the SteelHead WAN optimization service
or the clients on the LAN side of the network.
• The primary port is configured as SteelHead Primary mode for the SteelHead SD appliance.
Note: If the LAN port attached to the SteelHead SD appliance is in a VLAN trunk, the virtual SteelHead instance must
be given an IP address from one of the zones that is part of the trunk, and the virtual SteelHead in-path IP address
must also be configured with the corresponding VLAN ID.
For details on configuring the primary and LAN ports, see the SteelHead SD Installation Guide .
To assign the in-path IP address and the default gateway in SCM
1. In SCM, choose Network Design > Zones.
2. Select the zone with the SteelHead SD appliance to expand the pane. The IP tab is displayed.