HP AE370A Brocade Web Tools Administrator's Guide v6.0.0 (53-1000606-01, April - Page 183

Chapter Administering Extended Fabrics 13 In this chapter This chapter contains the following information: • "About extended link buffer allocation," next • "Configuring a port for long distance" on page 165 About extended link buffer allocation The Extended Fabric tab of the Switch Administration window displays information about the port speed, long-distance setting, and buffer credits, as shown in Figure 74 on page 164. Use this tab to configure the long-distance setting of a port. Because buffer credits are a switch resource, you must own the switch in order to modify Extended Fabric settings on a port. For detailed information on managing extended fabrics, see the Fabric OS Administrator's Guide. NOTE You do not need to use the Extended Fabrics feature unless the link is used over long distances. The Extended Fabric tab displays the following information: • Port Number • Buffer Limited-Indicates whether the port is buffer limited. A buffer-limited port can come online with fewer buffer credits allocated than its configuration specifies, allowing it to operate at a reduced bandwidth instead of being disabled for lack of buffers. Buffer-limited operation is supported for the L0 and LD extended ISL modes only and is persistent across reboots, switch disabling and enabling, and port disabling and enabling. • Port Speed-The port speed is displayed as follows: • 1G-1 Gbit/sec • 2G-2 Gbit/sec • 4G-4 Gbit/sec • 8G-8 Gbit/sec • N1-Negotiated 1 Gbit/sec • N2-Negotiated 2 Gbit/sec • N4-Negotiated 4 Gbit/sec • Auto-Negotiation • Buffer Needed/Allocated-The number of buffers needed and the number of buffers that are actually allocated. • Actual Distance (km)-The actual distance for the link in kilometers. Web Tools Administrator's Guide 163 53-1000606-01