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Qos Operating Notes And Restrictions - HP ProCurve Series 2810 Management And Configuration Manual

Procurve series 2810 switches.
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Quality of Service (QoS): Managing Bandwidth More Effectively

QoS Operating Notes and Restrictions

Table 6-12. Details of Packet Criteria and Restrictions for QoS Support
Packet Criteria or
Restriction
Restricted to IPv4 Packets Only
Allow Packets with IP Options
2
Support IPv6 Packets
Support Layer-2 SAP
Encapsulation
1
An "IP Option" is an optional, extra field in the header of an IP packet. If the switch is configured with a UDP/TCP type
and a packet with an IP option is received, the switch uses the next-highest type, if configured.
2
All Switches: For explicit QoS support of IPv6 packets, force IPv6 traffic into its own set of VLANs and then configure
VLAN-based types for those VLANs.
6-66
QoS Operating Notes and Restrictions
UDP/TCP
Device
Priority (IP
Address)
Yes
Yes
1
No
Yes
No
No
No
No
All Switches: For explicit QoS support of IP subnets, ProCurve recom-
mends forcing IP subnets onto separate VLANs and then configuring
VLAN-based types for those VLANs.
For Devices that Do Not Support 802.1Q VLAN-Tagged Ports:
For communication between these devices and the switch, connect
the device to a switch port configured as Untagged for the VLAN in
which you want the device's traffic to move.
Port Tagging Rules: For a port on the switch to be a member of a
VLAN, the port must be configured as either Tagged or Untagged for
that VLAN. For more on VLANs, refer to chapter 2, "Static Virtual
LANs (VLANs)".
SAP-Encapsulated Packet Restriction: Except for source-port
QoS and VLAN QoS, the switches covered in this guide do not support
QoS operation for SAP-Encapsulated packets. Thus, the switch can
use only VLAN QoS and source-port QoS to prioritize SAP-encapsu-
lated packets.
Packets with IP Option Fields in the Header: UDP/TCP QoS is
not supported for IP packets carrying optional fields in their headers.
QoS Types
IP Type-of-
VLAN
Source
Service
Port
Yes
No
Yes
Yes
No
Yes
No
Yes
DSCP
Overwrite
Incoming
(Re-
802.1p
Marking)
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No

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