Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 61)

Buffer profiles for VoIP on FastIron stackable devices
NOTE
Configuring buffer profiles for VoIP traffic is not supported on FastIron X Series and ICX 6650 devices.
Configuring VoIP buffer profiles adds buffer profiles for 1 GbE-to-100 Mbit traffic, simplifying
configuration and improving performance.
VoIP profiles allows you to configure a pre-defined set of buffers and descriptors for the priority 0 and 7.
These profiles support VoIP traffic that uses priority 7, with 10 Mbps or 100 Mbps uplink ports and 1000
Mbps downlink ports.
NOTE
In previous software versions, you could manually configure buffers and descriptors using qd
commands. Buffer profiles for VoIP cannot coexist with qd commands. You may use buffer profiles for
VoIP or qd command, but not both at the same time.
Configuring buffer profiles for VoIP
To configure predefined buffers, enter a command similar to the following.
device#buffer-profile port-region 0 voip downlink 100 uplink 1000
Syntax: [no] buffer-profile port-region num voip downlink 100 uplink 1000
NOTE
The port-region num can be either 0 (ports 0/1/1 to 0/1/24) or 1 (ports 0/1/25 to 0/1/48).
NOTE
FCX and ICX models (except ICX 6650) do not support this command.
Deleting buffer profiles for VoIP
To delete an existing buffer profile configuration, use the no form of the command.
device#no buffer-profile port-region 0 voip downlink 100 uplink 1000
Syntax: [no] buffer-profile port-region num voip downlink 100 uplink 1000
Buffer allocation for ICX 6650
Buffer allocation details for ICX 6650
By default, the architecture allocates fixed buffers on a per-priority queue, per-packet processor basis.
The buffers control the total number of packets that can be queued in the outbound transmit for the port.
In instances of heavy traffic bursts to aggregation links, such as in stacking configurations or mixed-
speed environments, momentary oversubscription of the buffers and descriptors may occur. A
descriptor points to one or more packet buffers.
Buffer profiles for VoIP on FastIron stackable devices
FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide 61
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