Configuring Congestion Avoidance; Configuring Congestion Detection - Cisco MDS 9000 Series Configuration Manual

Configuring Congestion Avoidance

Configuring Congestion Avoidance
The following features can be configured for congestion avoidance:
• Congestion-drop
• No-credit-drop
• Pause-drop
• Port-monitor portguard action for congestion avoidance (errdisable and flap)

Configuring Congestion Detection

Most of the features used for congestion detection are enabled by default and do not require any additional
configuration. These features include txwait, rxwait, interface priority flow control, OBFL error stats, and
tx-credit-not-available. The following congestion detection features are configurable.
Modules and switches included in "Module and Switch Support" section of Table 20.
• 16-Gbps modules or switches:
• 10-Gbps FCoE module:
• 40-Gbps FCoE module:
Table 20: Slow Port Monitor Support on Fibre Channel and FCoE Switching Modules, on page 169
the congestion detection features supported on different Fibre Channel and FCoE switching modules for the
Cisco MDS NX-OS Release 8.x.
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
168
• Cisco MDS 9700 Series 16-Gbps Fibre Channel Module (DS-X9448-768K9)
• Cisco MDS 9000 Series 24/10 SAN Extension Module (DS-X9334-K9)
• Cisco MDS 9250i Fabric Switch
• Cisco MDS 9148S Fabric Switch
• Cisco MDS 9396S Fabric Switch
• 32-Gbps modules or switches:
• Cisco MDS 9000 Series 32-Gbps Fibre Channel Module (DS-X9648-1536K9)
• Cisco MDS 9132T Fibre Channel Switch
• Cisco MDS 9700 48-Port 10-Gbps Fibre Channel over Ethernet (DS-X9848-480K9)
• Cisco MDS 9700 40-Gbps 24-Port Fibre Channel over Ethernet Module (DS-X9824-960K9)
Congestion Detection, Avoidance, and Isolation
displays