Avaya BSGx4e CLI User's Guide download pdf (Page 90)

QoS (GoS) commands 3 Configuration commands

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qos downstream link

Downstream QoS manages WAN link bandwidth to provide quality

protection for specified incoming data streams. This is intended primarily to

ensure adequate bandwidth for incoming VoIP streams.

It designates an (upstream) QoS quality group to protect the corresponding

downstream traffic. The bandwidth and prioritizing functions that the

quality group provides does not, however, apply to Downstream QoS.

Rather, Downstream QoS implements a dedicated mechanism to protect

the high priority traffic by rate limiting the low priority TCP based traffic.

See qos group on page 91

for more information on QoS group

configurations.

Note: Do not add protect TCP traffic using downstream QoS.

Syntax config qos downstream link linerate <rate> encapsulation

Parameters linerate rate Enter the WAN interface line rate.

encapsulation ethernet|vlan|pppoe|pppoa_vcmux|pppoa_llc

Enter the type of WAN interface. The rate

associated corresponds to the WAN access

technology. The service provider includes

bandwidth with the overhead of the WAN

access technology used. For example, a 2 Mbps

PPP over ATM VCMUX, the 2 Mbps normally

includes ATM VCMUX + PPP overheads. With a

2 Mbps PPP over Ethernet, the 2 Mbps

normally includes the Ethernet + PPP

overheads. Because the overheads are not the

same for ATM VCMUX and Ethernet, the 2

Mbps of ATM VCMUX + PPP are not the same

as the 2 Mbps of Ethernet + PPP.

Example > conf qos downstream linerate 2000000 encapsulation Ethernet

commands

show qos group

display qos downstream link

show qos downstream link

show qos downstream status

stats qos downstream

clear qos downstream

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Avaya BSGx4e CLI User's Guide Page 90