Qos Sid/Did Priorities Over An Fcip Trunk - Brocade Communications Systems 8 Administrator's Manual

QoS SID/DID priorities over an FCIP trunk

QoS SID/DID traffic prioritization is a capability of Brocade Fabric OS Adaptive Networking licensed
feature. This feature allows you to prioritize FC traffic flows between initiators and targets.
Each circuit has four internal TCP connections that manage QoS SID/DID priorities over an FCIP
tunnel, as illustrated in
•
•
•
•
These priorities are enforced only when there is congestion on the network. If there is no
congestion, all traffic is handled at the same priority.
FIGURE 7
Fabric OS FCIP Administrator's Guide
53-1001766-01
Figure
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.
VE Port
Tunnel
Circuit
IP
Interface
GE Port
TCP connections for handling QoS SID/DID-based FC traffic prioritization

QoS SID/DID priorities over an FCIP trunk

7. The priorities are as follows:
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
2
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