Qos Sid/Did Priorities Over An Fcip Trunk - Brocade Communications Systems Brocade BladeSystem 4/24 User 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 hosts and targets.
Four internal TCP connections provide internal circuits for managing 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 152
DCFM Enterprise User Manual
53-1001775-01
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
152. 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
16
383