Explanation/Reference:
Correct addressing, the opposite of transparent Addressing which includes Port or Full transparency, enables you to use the connection pooling optimization feature. Connection pooling works only for connections optimized using correct addressing. Connection pooling enables Steelhead appliances to create several TCP connections between each other before they are needed. When transparent addressing is enabled, Steelhead appliances cannot create the TCP connections in advance because they cannot detect what types of client and server IP addresses and ports are needed.
Incorrect:
not B: If you manage IP address-based or TCP port-based QoS policies for optimized traffic on your WAN or WAN routers, you might use full address transparency or port transparency.
Not C: Full address transparency preserves your client and server IP addresses and port numbers in the TCP/IP header fields for optimized traffic in both directions across the WAN. VLAN tags can also be preserved.
Note: RiOS v6.0 or later offers the following options for configuring WAN visibility modes:
* Correct Addressing - WAN-side connections use Steelhead appliance IP addresses and Steelhead appliance server ports.
* Transparent Addressing - the following are Transparent Addressing options:
- Port Transparency - WAN-side connections use Steelhead appliance IP addresses but use TCP server ports that mirror the LAN-side connection.
- Full Transparency - WAN-side connections mirror all IP addresses and TCP ports used on the LAN-side connection.
- Full Transparency with Forward Reset - The same as Full Transparency, with an additional packet during auto-discovery to aid with integration of stateful network devices on the WAN.
References: Steelhead Appliance Deployment Guide, Including the Steelhead Mobile Controller, December 2013, pages 49-51
https://support.riverbed.com/bin/support/download?did=a53locljdv9s5oc0agjp851iol