Cisco Systems DSC9148D8G48PK9 manual Port Rate Modes

Chapter 3 Configuring Fibre Channel Interfaces

Information About Fibre Channel Interfaces

Table 3-2	Bandwidth and Port Groups for the Fibre Channel Modules and Fabric Switches
	(continued)
				Bandwidth Per	Maximum
		Product Name/	Number of Ports	Port Group	Bandwidth Per Port
Part Number		Description	Per Port Group	(Gbps)	(Gbps)
DS-C9134-K9		32-port 4-Gbps	4	16	4 Gbps
(Cisco MDS 9134		Fabric switch
Fabric switch)		2-port 10-Gbps	1	10	10 Gbps
		Fabric switch
DS-C9124K9 (Cisco		24-port 4-Gbps	4	16	4 Gbps
MDS 9124 Fabric		Fabric switch
switch)
DS-C9222i-K9		18-port 4-Gbps, 4	6	12.8	4 Gbps
(Cisco MDS 9222i		Gigabit Ethernet
		ports and a modular
Multiservice Modular
		expansion slot.
switch)

1.This bandwidth is available with the Fabric 3 module (DS-13SLT-FAB3) in the MDS 9513 switch.

2.This bandwidth is available with the Fabric 2 module (DS-13SLT-FAB2) in the MDS 9513 switch, and with the Supervisor-2 (DS-X9530-SF2-K9) or Supervisor-2A module (DS-X9530-SF2AK9) in the MDS 9509 switch or MDS 9506 switch.

3.A maximum of four ports (one per port group) in a 4/44-port 8-Gbps switching module can operate at 8-Gbps bandwidth in dedicated or shared mode. All the other ports can operate at a maximum of 4-Gbps in shared mode or dedicated mode.

Port Rate Modes

In Generation 2, Generation 3, and Generation 4 modules, you can configure the port rate modes. The port rate mode configuration is used to determine the bandwidth allocation for ports in a port group. Two port rate modes are supported:

•Dedicated Rate Mode—A port is allocated required fabric bandwidth to sustain line traffic at the maximum operating speed configured on the port. For more information, see the “Dedicated Rate Mode” section on page 3-7.

•Shared Rate Mode—Multiple ports in a port group share data paths to the switch fabric and share bandwidth. For more information, see the “Shared Rate Mode” section on page 3-8.

Note In Generation 1 modules, you cannot configure the port rate modes. The mode is determined implicitly based on the port mode and line card type.

Note Port rate modes are not supported on the Cisco Fabric Switch for HP c-Class Blade System, and the Cisco Fabric Switch for IBM Blade Center.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x		3-5