Brocade Network Advisor SAN User Manual v11.1x (53-1002167-01, May 2011)

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Configuring FCIP tunnel advanced settings

7. You can activate the Enable backward compatibility feature on 8 Gbps platforms if IPSec is

enabled. This allows multiple 1 Gbps circuits to be created using 10 Gbps ports even if the

switch at one end of the tunnel is using Fabric OS 7.0 and the switch at the other end is using

Fabric OS earlier than v7.0. Note that this feature can only be enabled when IPSec is enabled

and when circuits are configured without any advanced 10 Gbps features, such as lossless

failover, multi-gigabit circuits, or 10 Gbps Adaptive Rate Limiting (ARL).

Configuring FICON emulation

FICON emulation and acceleration features and operating parameters are configured from the

FICON Emulation tab (Figure 293). Before you configure these features you must decide which

features you want to implement, and you must look closely at the operational parameters to

determine if values other than the default values are better for your installation.

1. Select Advanced Settings on the Add FCIP Tunnel dialog box to display the Advanced Settings

dialog box.

2. Select the FICON Emulation tab.

FIGURE 293 Advanced Settings FICON Emulation Tab

3. Select the check boxes for the FICON emulation features you want to implement.

The primary FICON emulation features are FICON XRC Emulation (IBM z/OS Global Mirror

emulation), tape write pipelining, tape read pipelining, TIN/TUR emulation and device level ACK

emulation provide support for the primary features. If you select any of the primary features,

you must also select TIN/TUR emulation and device level ACK emulation.

For 8 Gbps platforms operating with Fabric OS 6.4.1 and later, you can also enable FICON

Teradata read pipelining and FICON Teradata write pipelining.