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Inter-domain QoS using BGP signalling

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... decode QoS attributes
... QoS capable IXPs
QoS capable Internet Exchange Points

List of IXPs and their Ethernet QoS Marking/Scheduling support

Ethernet QoS is defined in IEEE 802.1p and relies on the VLAN tag framing structure as defined in IEEE 802.1q.
Therefore, the 3 avaiable user priority bits for marking priorities from 0 .. 7 are only available, if tagged ports are offered on the IXPs switching platform.
Furthermore, switching can consist of several switches being organized in hierachical structures and may use transparent VLAN mapping internally. This however, could lead to a priority marking reset and prohibit reliable marking transfers across the platform.
Lastly, IXP operators can configure their switches to perform 802.1p queueing and scheduling or opt for a best effort only relay even of VLAN tagged Ethernet frames.
If such queueing and scheduling is enabled, it is important to note, how many queues are consistently supported between input and output ports.

Legend:

NameName of the Internet Exchange Point
URL Home of the Internet Exchange Point
VLANVLAN tagged ports are offered on request
VLAN PrioVLAN user priority bit markings are transparently transfered across the platform
IEEE 802.1pEthernet class of service queueing and scheduling is enabled
QueuesNumber of consistently supported queues between input and output ports
DetailsSingle view of IXP details including contact details for QoS interested peers


-> Register as new QoS capable IXP

Name URL VLAN VLAN Prio IEEE 802.1p Queues Details
 DE-CIX  http://www.de-cix.net/ X X 802.1p support on request + non-blocking line-rate switching 8 Details
 AMS-IX  http://www.ams-ix.net/ X X 802.1p support + non-blocking line-rate switching 4 (7 later in 2009) Details



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