S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
14-4
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 14 Configuring Generation 2 Switches and Modules
About Generation 2 Modules and Switches
Note
Port groups are defined by the hardware and consist of sequential ports. For example, ports 1 through
12, ports 13 through 24, ports 25 through 36, and ports 37 through 48 are the port groups on the 48-port
4-Gbps Fibre Channel switching modules.
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 Mode
and
Shared Mode
. In Generation 1 modules, port
rate mode is not configurable by users; rather, it is determined implicitly based on the port mode and
linecard type. In Generation 2 modules, port rate mode is user-configured.
DS-C9124K9
Cisco MDS 9124
Fabric switch
24-port 4-Gbps
4
16
4-Gbps
DS-C9222i-K9
Cisco MDS 9222i
Multiservice
Modular switch
18-port 4-Gbps
6
12.8
4-Gbps
1.
By default, all ports in a 48-port 4-Gbps switching module operate in shared mode with administrative operating speed
set to auto. All ports in a 48-port 4-Gbps switching module can operate in dedicated mode with a 1-Gbps operating speed.
However, if you configure one or more ports to operate in 2-Gbps or 4-Gbps dedicated mode, some of the other ports in
the module would have to operate in shared mode.
Table 14-2
Bandwidth and Port Groups for Generation 2 FC Modules and Fabric Switches
Part Number
Product Name/
Description
Number of Ports
Per Port Group
Bandwidth Per
Port Group
Maximum
Bandwidth Per Port
Table 14-3
Port Rate Mode Support on Generation 2 Modules and Switches
Part Number
Product Name/
Description
Supports Dedicated Rate
Mode
Supports Shared Rate
Mode
Modules
DS-X9148
Cisco 48-port 4-Gbps Fibre
Channel module
48-port 4-Gbps Fibre
Channel switching module
1
Yes
Yes
DS-X9124
Cisco 24-port 4-Gbps Fibre
Channel module
24-port 4-Gbps Fibre
Channel switching module
Yes
Yes