
Customizing Signaling
117374-C Rev 00
5-47
To change the ILMI SCR value, complete the following tasks:
Setting the MBS
The maximum burst size (MBS) specifies the maximum number of sequential
cells allowed on a VC before that VC must relinquish bandwidth to other VCs
waiting to transmit. This burst occurs at or close to the peak cell rate.
When setting the MBS, you should select a value larger than the largest packet
your control VC can transmit (that is, the size of the maximum AAL CPCS
transmit SDU). For example, if your VC accepts packets that are less than 4608
bytes long (PVC default), set your MBS value between 45 and 50 cells.
By default, the MBS is set to 40 cells. However, you can set the MBS to any value
from 1 to 65535 cells.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
click on the ATM interface (
ATM1
) that you
want to modify.
The Select Connection Type window
opens.
2. Click on
ATM
. The Edit ATM Connector window opens.
3. Click on
Interim Local Management
Interface (ILMI)
.
The ATM ILMI Signaling Parameters
window opens.
4. Click on
ILMI VC
. The ATM Control VC for ILMI window
opens.
5. Set the
Xmit Sustainable Cell Rate
(cells/s)
parameter. Click on
Help
or see
the parameter description on page A-60.
6. Click on
Done
. You return to the ATM ILMI Signaling
Parameters window.
7. Click on
Done
. You return to the Edit ATM Connector
window.
8. Click on
Done
. You return to the Select Connection Type
window.
9. Click on
Done
. You return to the Configuration Manager
window.
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