Quality Of Service; Configuring Port Classification; Setting The Basic Qos Parameters For A Port - AMX NXA-ENET8-2POE Instruction Manual

Voice VLAN OUI Table parameters
• Telephony OUI
• Description
OUI numbers are assigned to manufacturers and form the first three octets of device MAC addresses. The MAC OUI numbers for
VoIP equipment can be configured on the switch so that traffic from these devices is recognized as VoIP.
NOTE: Making any changes to the OUI table will restart the auto-detection process for attached VoIP devices.
1. Click Conf iguration, Voice VLAN, OUI.
2. Click Add new entry.
3. Enter a MAC address that specifies the OUI for VoIP devices in the network, and enter a description for the devices.
4. Click Save.

Quality of Service

All switches or routers that access the Internet rely on class information to provide the same forwarding treatment to packets in the
same class. Class information can be assigned by end hosts, or switches or routers along the path. Priority can then be assigned
based on a general policy, or a detailed examination of the packet. However, note that detailed examination of packets should take
place close to the network edge so that core switches and routers are not overloaded.
Switches and routers along the path can use class information to prioritize the resources allocated to different traffic classes. The
manner in which an individual device handles traffic is called per-hop behavior. All devices along a path should be configured in a
consistent manner to construct a consistent end-to-end Quality of Service (QoS) solution.
This section describes how to specify which data packets have greater precedence when traffic is buffered in the switch due to
congestion. This switch provides four priority queues for each port. Data packets in a port's high-priority queue will be transmitted
before those in the lower-priority queues. You can set the default priority for each interface, the queuing mode, and queue weights.
The switch also allows you to configure QoS classification criteria and service policies. The switch's resources can be prioritized to
meet the requirements of specific traffic types on a per hop basis. Each packet is classified upon entry into the network based on
Ethernet type, VLAN ID, TCP/UDP port, DSCP, ToS, or its VLAN priority tag. Based on configured network policies, different kinds of
traffic can be marked for different kinds of forwarding.
Conf iguring Port Classif ication
Use the QoS Ingress Port Classif ication page to set the basic QoS parameters for a port, including the default traffic class, DP level
(IEEE 802.1p), user priority, drop eligible indicator, classification mode for tagged frames, and DSCP-based QoS classification.

Setting The Basic QoS Parameters For A Port

QoS Ingress Port Classification
FIG. 95
QoS Ingress Port Classif ication parameters
• Port
• QoS class
• DP level
• PCP
• DEI
• Tag Class
• DSCP Based
• Tag Classification
NXA-ENET8-2POE - Instruction Manual
Specifies a globally unique identifier assigned to a vendor by IEEE to identify VoIP equipment. The OUI must be 6
characters long and the input format xx-xx-xx (where x is a hexadecimal digit).
User-defined text that identifies the VoIP devices.
Port identifier.
Controls the default QoS class, i.e., the QoS class for frames not classified in any other way. There is a one to one
mapping between QoS class, queue and priority. A QoS class of 0 (zero) has the lowest priority. (Range: 0-7;
Default: 0)
Controls the default drop priority for frames not classified in any other way. (Range: 0-1; Default: 0)
Controls the default Priority Code Point (or User Priority) for untagged frames. (Range: 0-7; Default: 0)
Controls the default Drop Eligible Indicator for untagged frames. (Range: 0-1; Default: 0)
Shows classification mode for tagged frames on this port:
Disabled - Uses the default QoS class and DP level for tagged frames.
Enabled - Uses the mapped versions of PCP and DEI for tagged frames.
Click on the mode in order to configure the mode and/or mapping.
Click to Enable DSCP Based QoS Ingress Port Classification (see page 114).
Sets classification mode for tagged frames on this port:
Disabled - Uses the default QoS class and DP level for tagged frames. (This is the default.)
Enabled - Uses the mapped versions of PCP and DEI for tagged frames.
Configuring the NXA-ENET8-2POE
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