HP StorageWorks 8/80 Brocade Web Tools Administrator's Guide v6.2.0 (53-100119 - Page 216

14 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 (see Table 16 on page 189), 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 16 describes the long-distance settings and identifies which settings require a Brocade Extended Fabrics license. FIGURE 91 Extended Fabric tab For Brocade DCX and DCX-4S enterprise-class platforms, the slots for CP are not available. You can view only two FC and two logical ports in the Extended Fabric tab for the 7500E Extension switches without upgrade license. The Brocade Encryption Switch and the FS8-18 Encryption blade support auto-negotiated link speeds of 1, 2, 4, and 8 Gbps. The GE ports are always locked at 1 Gbps. 188 Web Tools Administrator's Guide 53-1001194-01