Brocade Communications Systems Brocade 8/12c User Manual page 682

20
QoS SID/DID priorities over an FCIP trunk
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•
•
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NOTE
The QoS high (50%), medium (30%), and low (20%) values are fixed for the 4 Gbps Extension Blade
and cannot be configured. For 8 Gbps platforms, these are default values which you can change
using procedures under
when there is congestion on the network. If there is no congestion, all traffic is handled at the same
priority.
FIGURE 285
638
F class - F class is the highest priority, and is assigned bandwidth as needed at the expense of
lower priorities, if necessary.
QoS high - The QoS high priority gets at least 50% of the available bandwidth.
QoS medium - The QoS medium priority gets at least 30% of the available bandwidth.
QoS low - The QoS low priority gets at least 20% of the available bandwidth.
"Configuring QoS Priorities"
External User Perspective
VE Port
Tunnel
Circuit
IP
Interface
GE Port
TCP connections for handling QoS SID/DID-based FC traffic prioritization
on page 639. These priorities are enforced only
Internal Architecture
High Priority Med. Priority
Virtual Virtual
Tunnel Tunnel
Virtual Virtual
Circuit Circuit
TCP TCP
Connection Connection
Low Priority F-Class
Virtual Virtual
Tunnel Tunnel
Virtual Virtual
Circuit Circuit
TCP TCP
Connection Connection
Document Title
xx-xxxxxxx-01