
Configuring Frame Relay Services
2-22 117376-B Rev. 00
If you supply values for the LL Core parameters, the router requests an SVC
from the frame relay network with the quality of service you have designed.
However, the router can only request the values you have configured. The
actual values the network supplies may be less than requested because the
local router, the network, and the remote end negotiate the actual quality of
service. To track the values an SVC uses, use the Site Manager Statistics
Manager (for further information, see Configuring and Managing Routers
with Site Manager).
• You can set the SVC Traffic Shaping Disable parameter to Disable, and
provide values for the LL Core Committed Burst, Excess Burst and
Throughput parameters.
If you configure traffic shaping this way, the router does not enforce the CIR it
requests from the frame relay network. There is a risk of oversubscribing the
interface, which may result in dropped packets.
Refining Quality of Service for SVCs
SVCs allow you to refine quality of service requirements in that you can specify
values for traffic shaping parameters for both incoming and outgoing directions,
and you can set values for incoming and outgoing minimum acceptable
throughput.
The values you set in incoming and outgoing parameters apply to traffic
depending on where the SVC call originates. See the topic, “Defi
ning Incoming
and Outgoing,” to understand how the software uses these parameters.
Refining Traffic Shaping
The parameters involved are the LL Core Out Throughput (CIR), LL Core Out
Committed Burst, LL Core Out Excess Burst, LL Core In Throughput (CIR), LL
Core In Committed Burst, and LL Core In Excess Burst. You can use these
parameters to request values for traffic shaping that distinguish between incoming
and outgoing traffic.
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