Qos For The Oversubscribed 16 X 10Ge Modules; Aggregation Np Qos Modes; Port Group Assignments; Setting The Server And Storage Modes - Dell PowerConnect B-RX Configuration Manual

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QoS for the oversubscribed 16 x 10GE modules

QoS for the oversubscribed 16 x 10GE modules
The 16-port 10 Gigabit Ethernet oversubscribed module plugs into any port slot of the BigIron RX
switch and is compatible with all previous generations of card on that switch. It provides interfaces
to 16 X 10GE ports. This module will provide 4:1 oversubscription on the 16 x10GE network ports.

Aggregation NP QOS modes

The 16x10 module supports two ingress scheduling modes: Server and Storage.
The Aggregation NP has 4 group schedulers. Each scheduler support 4 ports. Each port is given a
high and low priority queue.
In Server mode the group scheduler uses strict priority between the high and low priority queues.
Scheduling within a priority is done with WRR using equal weights.
In Storage mode the group scheduler uses WRR to schedule all high and low priority queues. The
weights are configured using a CLI command.
The 16-port 10 Gigabit Ethernet module works in Server mode by default.
Configuration considerations
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Port group assignments

The 16 x10 GE module consists of 4 port groups of 4 ports each: Each of the network ports are
assigned high low and low high queues.
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Setting the server and storage modes

The default mode is qos rcv-scheduler fq-sp which is strict priority mode. This is used for the Server
mode. This command sets the queues (TC) associated to the uplink ports. Each network port is
assigned one low and high priority queue. In the either mode, queues 1-4 are low priority and 5-8
are high priority. For example, network port 1 uses queues (TC) 1 and 5. In the strict priority mode
the scheduling between high and low priority is strict.
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Mirror (analyzer) ports cannot be assigned to the 16x10GE card. You can monitor traffic on
16x10 ports.
Brocade currently only support "strict" and "destination-weighted" scheduling schemes.
Virtual interface subsets are not supported for engress ACLs.
The egress filtering of the 16x10 module only compares to 3 bits of TOS field (delay,
throughput, reliability).
Port group 1: ports 1,5,9,13
Port group 2: ports 2,6,10,14
Port group 3: ports 3,7,11,15
Port group 4: ports 4,8,12,16
BigIron RX Series Configuration Guide
53-1001986-01