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HP ProCurve 5412ZL User Manual

HP ProCurve 5412ZL
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5-70
Quality of Service: Managing Bandwidth More Effectively
Globally-Configured QoS
IP Multicast (IGMP) Interaction with QoS
IGMP high-priority-forward causes the switch to service the subscribed IP
multicast group traffic at high priority, even if QoS on the switch has relegated
the traffic to a lower priority. This does not affect any QoS priority settings,
so the QoS priority is honored by downstream devices. However, QoS does
take precedence over IGMP normal-priority traffic.
The switch’s ability to prioritize IGMP traffic for either a normal or high
priority outbound queue overrides any QoS criteria, and does not affect any
802.1p priority settings the switch may assign. For a given packet, if both IGMP
high priority and QoS are configured, the QoS classification occurs and the
switch marks the packet for downstream devices, but the packet is serviced
by the high-priority queue when leaving the switch.
IGMP High
Priority
QoS Configuration
Affects Packet
Switch Port Output
Queue
Outbound 802.1p Setting
(Requires Tagged VLAN)
Not Enabled Yes Determined by QoS Determined by QoS
Enabled See above para-
graph.
High As determined by QoS if QoS is
active.

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HP ProCurve 5412ZL Specifications

General IconGeneral
Input Voltage100-240 VAC
Jumbo Frame SupportYes
LayerLayer 3
Port Type10/100/1000Base-T, SFP
ManagementCLI, Web, SNMP

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