Cisco MDS 9000 Series Command Reference

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Cisco MDS 9000 Family Command Reference
OL-8413-07, Cisco MDS SAN-OS Release 3.x
Chapter 21 S Commands
switchport
is 2 Gbps. For the same interface, if autosensing with a maximum speed of 2 Gbps (auto max 2000) is
configured, then only 2 Gbps of bandwidth is reserved and the unused 2 Gbps is shared with the other
interface in the port group.
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.
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.

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available