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
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Cisco MDS 9000 Family Command Reference
OL-18089-01, Cisco MDS NX-OS Release 4.x
Chapter 21 S Commands
switchport
Note
The 4-port 10-Gbps switching module only supports 10-Gbps traffic.
Table 21-1
lists the default configurations, credits, and buffers for switching modules.
When configuring port modes, observe the following guidelines:
•
Auto port mode and E port mode cannot be configured in shared rate mode.
•
The 4-port 10-Gbps module does not support FL port mode.
•
Generation 2 modules do not support TL port mode.
•
Shared to dedicated ports should be configured in this order: speed, rate mode, port mode, credit.
•
Dedicated to shared ports should be configured in this order: credit, port mode, rate mode, speed.
When configuring PortChannels, observe the following guidelines:
•
When an interface is out-of-service, it cannot be part of a PortChannel.
•
The 24-port module and the 48-port module support making ports out-of-service. In a shared
resource configuration, an out-of-service port reverts to its default values when it comes back into
service.
•
The maximum number of PortChannels for Generation-2 modules is 256.
•
The maximum number of PortChannels for a mixture of Generation-1 and Generation-2 modules is
128.
•
The number of PortChannels is independent of the type of supervisor module.
•
When adding a PortChannel to a configuration that uses both Generation-1 and Generation-2
modules, configure the PortChannel and Generation-2 interface speed to
auto max 2000
.
•
When using the force option to add a PortChannel to a configuration that uses both Generation-1
and Generation-2 modules, follow these guidelines:
–
Configure the PortChannel interface speed to
auto max 2000
, or add the Generation-1
interfaces followed by the Generation-2 interfaces.
Table 21-1
Default Configurations, Credits, and Buffers
Switching Module
Speed
Port Mode
Rate Mode
Credits
Min/Max/Default
12 port
Auto
1
Auto
2
Dedicated
2/250/250
24 port
Auto
1
Fx
Shared
1/16/16
Dedicated
1/250/16
Auto
Dedicated
2/250/250
48 port
Auto
1
Fx
Shared
1/16/16
Dedicated
1/250/16
Auto
Dedicated
2/250/125
4 port
Auto
3
Auto
2
Auto
2/250/250
1.
Auto speed negotiates to 1-, 2-, or 4-Gbps.
2.
Auto port mode can operate as an E, TE, or Fx port.
3.
Auto speed for a 4-port module negotiates to 10-Gbps.
