Brocade Web Tools Administrator's Guide - Supporting Fabric OS v7.0.0 (53-1002152-01, March 2012)

166 Web Tools Adminstrator’s Guide

53-1002152-01

Extended link buffer allocation overview

• Actual Distance (km)—The actual distance for the link in kilometers.

• Desired Distance (km)—Required for a port configured in LD or LS mode (Table 15 on

page 167), 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—Table 15 describes the long-distance settings and identifies which settings

require a Brocade Extended Fabrics license.

FIGURE 32 Extended Fabric tab

For the Brocade DCX, DCX-4S, DCX 8510-4, and DCX 8510-8 the slots for CPs are not available.