Avaya BCM50 Manual de configuração técnica - Página 7
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1.1 Avaya Automatic QoS Edge Mode: ERS 4500 and ERS
5000
On the ERS 4500 and ERS 5000, when enabling dynamic prioritization via Avaya Automatic QoS Edge,
there are two modes to choose from, mixed mode and pure mode.
In mixed mode, the ERS 4500 or ERS 5000 will recognize and remark the traffic from the attached IP
phone, IP Softphone 2050 client or Avaya BCM/Avaya SRG/Avaya CS 1000/Avaya CS 2100 according to
values shown in Table 1. As long as the switches used in the core/distribution layer are configured as
QoS trusted, these remarked DSCP values will be given preferential treatment and will be handled by the
appropriate egress queue.
NT DSCP from IP Phone
0x2F (47)
0x29 (41)
0x23 (35)
0x1B (27)
Please note that all other traffic types not identified will be handled as normal
unidentified traffic and will be remarked as "Standard/Best Effort" with DSCP value of
0x00 and treated as untrusted traffic.
In pure mode, the ERS 4500 or ERS 5000 will recognize and not remark the traffic from the attached IP
phone, Avaya 2050 IP Softphone client or Avaya BCM/Avaya SRG/Avaya CS 1000/Avaya CS 2100.
Avaya DSCP values will be given preferential treatment and will be handled by the appropriate egress
queue and the packet will retain these DSCP values as shown in Table 2.
NT DSCP
0x2F (47)
0x29 (41)
0x23 (35)
0x1B (27)
Please note that all other traffic types not identified will be handled as normal
unidentified traffic and will be remarked as "Standard/Best Effort" with DSCP value of
0x00 and treated as untrusted traffic.
Avaya Automatic QoS support is envisioned as a multi-phase project. In phase 1 of Avaya Automatic
QoS, ADAC, NSNA, Avaya Automatic QoS pure mode, or 802.1AB is not supported simultaneously. This
Ethernet Routing Switch 4500, 5000, Avaya BCM 50, 450, Avaya CS 1000, Avaya CS 2100, Avaya SRG 50
Table 1: NT DSCP Mapping Values
Traffic Type
VoIP Data (Premium)
VoIP Signaling (Platinum)
Video (Platinum)
Streaming (Gold)
Table 2: NT DSCP Values
Traffic Type
VoIP Data (Premium)
VoIP Signaling (Platinum)
Video (Platinum)
Streaming (Gold)
Standard DSCP
0x2E (EF)
0x28 (CS5)
0x22 (AF41)
0x1A (AF31)
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