ubr / cbr / vbr
This command defines the ATM service class for an ATM sub-interface.
Syntax
interface atm <group-id>/<sub-id> ubr <peak-kbps> cbr <peak-kbps> vbr <peak-kbps> <sustained-kbps> <burst-cells>
|
Command |
Description |
|---|---|
|
ubr |
Defines Unspecified Bit Rate; no bandwidth is reserved for this interface. Traffic may be limited by a peak rate. |
|
cbr |
Defines Constant Bit Rate; bandwidth is reserved according to the specified rate. Traffic cannot exceed the specified rate. |
|
vbr |
Defines Variable Bit Rate; bandwidth is reserved according to the configured sustained rate. Traffic may exceed the sustained rate up to the peak rate, but is further limited by a maximum number of burst cells. |
|
<peak-kbps> |
Defines the Maximum data rate in kilobits per second |
|
<sustained-kbps> |
Defines the Sustained data rate in kilobits per second |
|
<burst-cells> |
Defines the maximum number of cells allowed in excess of the sustained rate |
Default
The default setting is UBR with unlimited traffic rate.
Command Mode
Privileged User
Example
This example defines an ATM interface with a constant bit-rate traffic class, allowing bandwidth of 4 megabits per second:
(conf-atm0/0)# cbr 4096