Configuring Vbr-Nrt; Specifying Encapsulation - Cisco 10000 Series Configuration Manual

Chapter 2 8-Port E3/DS3 ATM Line Card Configuration
The following example shows how to assign an ATM VC class named boston to an ATM PVC:
Router(config)# interface atm 5/0/0.4
Router(config-subif)# pvc 2/100
Router(config-if-atm-vc)# class-vc boston

Configuring VBR-NRT

Use the vbr-nrt command to configure the variable bit rate non real-time (VBR-NRT) traffic
management type and specify output peak cell rate, output sustainable cell rate, and output maximum
burst cell size for an ATM PVC or VC class.
You can use the vbr-nrt command in PVC configuration mode or VC-class configuration mode.
vbr-nrt peak_cell_rate sustainable_cell_rate maximum_burst_size
no vbr-nrt peak_cell_rate sustainable_cell_rate maximum_burst_size
Where:
•
•
•
The default class of service is unspecified bit rate (UBR) running at the maximum line rate of the
physical interface.
Use the no form of this command to remove the VBR-NRT parameters and return the PVC to its default
of UBR.
The following example shows how to configure the VBR-NRT traffic parameters on an ATM PVC:
Router(config)# interface atm 5/0/0
Router(config-if)# pvc 0/105
Router(config-if-atm-vc)# vbr-nrt 10000 5000 200

Specifying Encapsulation

Use the encapsulation command in PVC configuration mode or VC-class configuration mode to specify
the ATM adaptation layer (AAL) and encapsulation type for an ATM PVC or VC class.
encapsulation {aal5mux ip | aal5snap}
no encapsulation {aal5mux ip | aal5snap}
Where:
•
•
Use the no form of this command to return an encapsulation to the default SNAP.
The following example shows how to specify aal5mux ip encapsulation for an ATM PVC:
Router(config)# interface atm 5/0/0.4
Router(config-subif)# pvc 0/105
Router(config-if-atm-vc)# encapsulation aal5mux ip
OL-8834-04
peak_cell_rate is the peak cell rate (PCR). For an E3 interface, you can enter values from 38 kbps
to 34,368 kbps. For a T3 interface, you can enter values from 38 kbps to 44,200 kbps. The PCR must
be at least equal to the sustainable cell rate (SCR).
sustainable_cell_rate is the sustainable cell rate (SCR) from 38 kbps to the PCR.
maximum_burst_size is a number from 1 to 65,535, which represents maximum burst size (MBS) in
cells.
aal5mux ip is AAL5+MUX encapsulation.
aal5snap is AAL5+LLC/SNAP encapsulation (the default).
Cisco 10000 Series Router Line Card Configuaration Guide
Line Card Commands
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