Cisco 2950SX 24 - Catalyst Switch - Stackable Bedienungsanleitung PDF herunterladen (Seite 6)

Cisco Systems, Inc.

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Product Features and Benefits

Feature Benefit

Service Breadth

Advanced QoS • This feature enables end-to-end QoS in the network by extending the QoS

trust boundary to the edge of the network.

• The switches support conﬁguring QoS ACPs on all ports to ensure proper

policing and marking on a per-packet basis using ACPs. Up to four ACPs per

switch are supported in conﬁguring either QoS ACPs or security ﬁlters.

QoS Classiﬁcation Support at Ingress

• The switches support QoS classiﬁcation of incoming packets for QoS ﬂows

based on Layer 2, Layer 3, and Layer 4 ﬁelds.

• The following Layer 2 ﬁelds or a combination can be used for classifying

incoming packets to deﬁne QoS ﬂows: source MAC address, destination

MAC address, 16-bit Ethertype.

• The following Layer 3 and 4 ﬁelds or a combination can be used to classify

incoming packets to deﬁne QoS ﬂows: source IP address, destination IP

address, TCP source or destination port number, UDP source or destination

port number.

QoS Metering/Policing at Ingress

• Support for metering/policing of incoming packets restricts incoming trafﬁc

ﬂows to a certain rate.

• The switches support up to 6 policers per Fast Ethernet port, and 60 policers

on a Gigabit Ethernet port.

• The switches offer granularity of trafﬁc ﬂows at 1 Mbps on Fast Ethernet

ports, and 8 Mbps on Gigabit Ethernet ports.

QoS Marking at Ingress

• The switches support marking/remarking packets based on state of policers/

meters.

• The switches support marking/remarking based on the following mappings:

from DSCP to 802.1p, and 802.1p to DSCP.

• The switches support 14 well-known and widely used DSCP values.

• The switches support classifying or reclassifying packets based on default

DSCP per port.

• The switches support classifying or reclassifying frames based on default

802.1p value per port.

• The switches support 802.1p override at ingress.

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Cisco 2950SX 24 - Catalyst Switch - Stackable Bedienungsanleitung Seite 6