WESM zl Management and Configuration Guide WT.01.28 and greater

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Introduction
ProCurve Wireless Edge Services zl Module
WLAN Classification
WMM allows RPs to queue frames according to priority marking. Alternatively, RPs
can place all traffic that is destined to stations associated with a particular WLAN in
the same queue. The four queues are the same as the four access categories (ACs)
for WMM (Voice, Video, Best Effort, and Background), and the RPs use the same
parameters for transmitting traffic in those queues that they would use for WMM.
The only difference is that traffic is queued statically according to WLAN instead of
automatically according to priority marking.
Voice Prioritization
Voice prioritization improves QoS for traffic destined to VoWLAN devices. When
you enable this feature in a WLAN, RPs monitor frames received from stations in
that WLAN. When a voice frame is detected, the Wireless Edge Services zl Module
marks all traffic destined to the source of that frame for priority handling.
Ethernet devices between the Wireless Edge Services zl Module and the RP and the
RP itself place return traffic to the VoWLAN device in a high-priority queue. Thus,
voice prioritization can improve QoS for voice traffic in both the Ethernet and the
wireless networks.
WFQ
The Wireless Edge Services zl Module queues traffic outbound to RPs according to
the RP and the WLAN to which it is destined. Each different WLAN on each different
RP has its own queue.
Management Capabilities and sFlow
You can manage the ProCurve Wireless Edge Service zl Module through either a
command line interface (CLI) or its intuitive Web browser interface. Access to the
Web browser interface is controlled through the highly secure Simple Network
Management Protocol version 3 (SNMP v3).
You can also manage the Wireless Edge Services zl Module entirely through a SNMP
solution such as PCM Plus.
In addition to managing the module’s software and configuration, the SNMP server
can also analyze the wireless traffic processed by the module. The Wireless Edge
Services zl Module acts as an sFlow agent, sampling wireless traffic and forwarding
the samples to the SNMP server or other sFlow collector. The module can also poll
RP radios for overall traffic statistics and submit the results to the sFlow collector.
Through packet sampling and counter polling, sFlow creates a highly accurate picture
of network traffic—useful for security auditing, traffic management, or network
troubleshooting—without consuming undue resources.