Cisco DS-C9216I-K9 Configuration Manual page 363

Configuring Traffic Management
Fibre Channel Congestion Control (FCC) is a Cisco proprietary flow control mechanism that alleviates
congestion on Fibre Channel networks.
Quality of service (QoS) offers the following advantages:
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This chapter provides details on the QoS and FCC features provided in all switches.
This chapter contains the following topics:
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FCC
FCC reduces the congestion in the fabric without interfering with the standard Fibre Channel protocols.
The FCC protocol increases the granularity and the scale of congestion control applied to any class of
traffic.
OL-7753-01
Provides relative bandwidth guarantee to application traffic.
Controls latency experienced by application traffic.
Prioritizes one application over another (for example, prioritizing transactional traffic over bulk
traffic) through bandwidth and latency differentiation.
FCC, page 27-1
QoS, page 27-2
Control Traffic, page 27-3
Data Traffic, page 27-3
Ingress Port Rate Limiting, page 27-6
Default Settings, page 27-6
C H A P T E R
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
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27-1