Rate Limiting Based On Interface And Vlan; Qos Enhancement - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

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ISCOM2600G-HI (A) Series Configuration Guide

7.1.8 Rate limiting based on interface and VLAN

The ISCOM2600G-HI series switch supports rate limiting both based on traffic policy,
interface, or VLAN ID. Similar to rate limiting based on traffic policy, the ISCOM2600G-HI
series switch discards the excess traffic.

7.1.9 QoS enhancement

QoS enhancement is a subfunction of QoS and is more flexible than basic QoS. It is widely
used on switches.
QoS enhancement has the following functions:


Bandwidth guarantee
The bandwidth guarantee function guarantees that the traffic entering the network is within
the defined range, and it discards or schedules packets. Bandwidth guarantee can meet users'
requirements on service bandwidth, and also protect network resources and carriers' benefits.
By configuring the bandwidth guarantee profile and applying it to an interface, you can mark
different flows green, yellow, and red. The ISCOM2600G-HI series switch takes different
actions over flows of different colors: forward green flows, schedule yellow flows, and
discard red flows.
Hierarchical bandwidth guarantee
Hierarchical bandwidth guarantee is a more flexible bandwidth guarantee. You can configure
guaranteed bandwidth for each flow independently and even configure guaranteed bandwidth
for sum of multiple flows through hierarchical bandwidth guarantee.
Color-aware and marking
If enabled with color-aware, the ISCOM2600G-HI series switch is in color-aware status, in
which it can identify whether the ingress flow is marked with color. If disabled with color-
aware, the ISCOM2600G-HI series switch is in color-blind status, in which it can neglect
whether the ingress flow is marked with color, but identify the flow color again.
The function of color marking judges the color of a flow according to Committed Information
Rate (CIR), Committed Burst Size (CBS), Excess Information Rate (EIR), and Excess Burst
Size (EBS) configured in the bandwidth guarantee profile, and modifies the flag bit to mark it
with color according to the packet format defined in IEEE 802.1ad.
Ingress interface
Bandwidth guarantee: QoS enhancement implements the bandwidth service based on
–
interface or flow. It also supports hierarchical bandwidth guarantee and refining
bandwidth of different service flows.
Awaring: this function determines whether to conduct color-aware of packets when a
–
flow enters the bandwidth-guaranteed interface.
Egress interface
Bandwidth guarantee: bandwidth service based on interface or flow is implemented.
–
QoS enhancement does not support hierarchical bandwidth guarantee.
Marking: this function determines whether to mark a packet with color when a flow
–
leaves the bandwidth-guaranteed interface.
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