Cisco CX-AIP-TM Installation And Configuration Manual page 35

Virtual circuits get the entire bandwidth of the associated rate queue. If over subscription occurs, the
other rate queues in bank A will miss the service opportunities. In the worst case, a 10-Mbps rate
queue will take 100 Mbps if there are 10 VCs attached to it and all of them have packets to send at
the same time.
Note
disallowed.
To configure rate queue 1 at 10 Mbps, use the atm rate-queue queue-number rate command in
interface configuration mode as follows:
Router(config-if)# atm rate-queue 1 10
where the queue-number is in the range of 0 to 7 and the rate (in Mbps) is in the range of 1 to 155.
The no form of the command removes the rate queue.
You must create a rate queue before you can create permanent virtual circuits (PVCs) or switched
virtual circuits (SVCs). If all rate queues are unconfigured, a warning message will appear, as
follows:
%WARNING:(ATM4/0): All rate queues are disabled
If the combined queue rates exceed the AIP physical layer interface bandwidth maximum, a warning
message will appear, as follows:
%WARNING(ATM4/0): Total rate queue allocation nMbps exceeds maximum of nMbps
Customizing the AIP Configuration
You can change the AIP default configuration values to match your network environment. Perform
the tasks in the following sections if you need to customize the AIP's configuration:
•
Selecting an AIP Interface
•
Setting the MTU Size
•
Configuring SONET Framing, page 36
•
Configuring an ATM Interface for Local Loopback, page 36
•
Setting the Reassembly Buffers, page 36
•
Setting the Transmit Buffers, page 36
•
Setting the Source of the Transmit Clock, page 36
Selecting an AIP Interface
The AIP's interface is referred to as atm in the configuration commands. An interface is created for
each AIP found in the system at reset time.
To select a specific AIP interface, use the interface atm slot/port command, as follows:
Router(config)# interface atm slot/port
For E3, rate queues greater than 34 are disallowed. For DS3, rate queues greater than 45 are
Asynchronous Transfer Mode Interface Processor (AIP) Installation and Configuration
Configuring the AIP
35