Avaya Configuring ATM Services Uživatelský manuál Strana 179

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Site Manager Parameters
114056 Rev. A A-29
When setting the SCR for ATM ARE ILI pairs and Model 5780 ATM routers,
keep the following in mind:
The SCR maps directly to the MCR.
The MCR provides guaranteed bandwidth for PVCs and Control VCs while
allowing sufficient bandwidth for SVCs to operate.
To be useful, the SCR must not exceed the PCR.
If you know the user average rate, set the SCR about 10 percent higher than
this value.
ATM ARE ILI pairs and Model 5780 ATM routers require a minimum SCR
value of 128 cells/s. VCs may fail to operate with SCR values less than 128
cells/s.
ATM ARE ILI pairs and Model 5780 ATM routers allow you to enter an SCR
value of 0. Entering 0 for the SCR turns off this function.
The E-3 framing mode setting affects the maximum SCR.
Instructions: After you determine the transmission rate of your ATM device, set the
sustainable cell rate within the range specified under “Options.” For ATM ARE
ILI pairs and Model 5780 ATM routers, you can enter 0 to turn off this function.
MIB Object ID: 1.3.6.1.4.1.18.3.4.23.1.5.1.9
Parameter: Xmit Sustainable Cell Rate (cells/s)
(continued)
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