HP Cisco MDS 9124 Cisco MDS 9000 Family Command Reference - Cisco MDS SAN-OS R - Page 992

switchport Chapter 21 S Commands Send documentation comments to [email protected] 100 1000 Configures 100-Mbps port speed. Configures 1000-Mbps port speed. Defaults The beacon is disabled. The EISL encapsulation is disabled. The default receive data buffer size is 2112 bytes. The port mode is auto. The speed is auto. The maximum auto speed is 2000. The trunk mode is on. The rate mode is shared. Command Modes Interface configuration submode. Command History Release 1.0(2) 2.0(1b) 3.0(1) Modification This command was introduced. Added the extended option to the fcrxbbcredit keyword. • Added the fcbbscn option. • Added the ST option to the mode keyword. • Added the 4000 option to the speed keyword. • Added the auto max 2000 option to the speed keyword. • Added the rate-mode keyword. • Added the Gigabit Ethernet interface syntax. • Added the management interface syntax. Usage Guidelines You can specify a range of interfaces by issuing a command with the following example format: interfacespacefc1/1space-space5space,spacefc2/5space-space7 Tip The shutdown or no shutdown command for the FCIP or iSCSI interfaces is automatically issued when you change the MTU size-you do not need to explicitly issue this command. You must perform the fcrxbbcredit extended enable command in configuration mode to use the switchport fcrxbbcredit extended command in interface configuration submode to enable extended BB_credits on a Fibre Channel interface. The port speed on an interface, combined with the rate mode, determines the amount of shared resources available to the ports in the port group. Especially in the case of dedicated rate mode, the port group resources are reserved even though the bandwidth is not used. For example, if an interface is configured for autosensing (auto), then 4 Gbps of bandwidth is reserved even though the maximum operating speed 21-74 Cisco MDS 9000 Family Command Reference OL-16217-01, Cisco MDS SAN-OS Release 3.x