Deployment Guide

• Remaining Buffer--The number of remaining buffers. The remaining buffer value is non-editable. If
the Buffers Needed value exceeds the remaining buffer value, a warning message displays.
• Frame Size --The size of the frame. When you edit the frame size value, the desired distance value
can also be changed for LD and LS modes and vice versa. But the buffer value cannot be changed.
• VC Link Init --The fill words used on long distance links. When set to IDLE (0) mode, the link uses
IDLE fill words. When set to ARB (1) mode, the link uses the default ARB fill words.
• Fill Word --Fill word comprises of the following modes:
‐ Mode 0 : Use IDLE in link init and IDLE as Fill word
‐ Mode 1: Use ARB in link init and ARB as Fill word
‐ Mode 2 : Use IDLE in link init and ARB as Fill word
‐ Mode 3 : Try Mode 1 first; if it fails, then try Mode 2.
NOTE
Fill word is not supported in 16 Gbps capable FC platforms. You must configure Fill Word and then
configure Long Distance and VC Link Init . Make sure Fill Word is always equal to or greater than
the VC Link Init value.
• Link Distance(km) --The actual distance of the link.
• Desired Distance (km) -- Required for a port configured in LD or LS mode (as shown in the
following table), the desired distance, in kilometers, for the link.
For an LD-mode link, the desired distance is used as the upper limit of the link distance to calculate
buffer availability for other ports in the same port group. If the measured distance is more than the
desired distance, the desired distance is used to allocate the buffers. In this case, the port operates
in degraded mode instead being disabled due to insufficient buffers.
For an LS-mode link, the actual distance is not measured; instead the desired distance is used to
calculate the buffers required for the port.
• Long Distance -- The following table describes the long-distance settings and identifies which
settings require a Brocade Extended Fabrics license.
FIGURE 36 Extended Fabric tab
Administering Extended Fabrics
188 Web Tools Administrator's Guide
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