Monitoring The Configuration - Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010 Configuration Manual

JUNOSe 11.1.x Quality of Service Configuration Guide
1.
2.
3.
4.
The QoS administrator creates a logical interface and attaches the parameter
Attaching the Parameter
definition. The scheduler hierarchy is created when the QoS administrator creates
Definition to an
the interface.
Interface
1.
2.
3.
4.
When an IGMP join occurs, the IP multicast bandwidth adjustment application creates
IP Multicast Bandwidth
the parameter instance ipm for the IP interface and the ATM VC subinterface. Because
Adjustment
the shared-shaping rate of the ATM VC references the ipm parameter, the rate is
recalculated. If the imp parameter has a value of 2 Mbps, the resulting shared-shaping
rate is 8 Mbps (10 Mbps - 2 = 8 Mbps).
When another IGMP join occurs, the IP multicast bandwidth adjustment application
recalculates the value for parameter ipm and configures it to another value (for
example, 7 Mbps). The system readjusts the ipm at the ATM VC and readjusts the
shared-shaping rate. If the voice traffic is 100 Kbps, then the best-effort traffic is
2.9 Mbps.
When an IGMP leave occurs, the IP multicast bandwidth adjustment application
configures the ipm parameter instance with a new value and readjusts the
shared-shaping rate.

Monitoring the Configuration

After completing the configuration, the QoS administrator can monitor it by issuing
show commands.
276
Example: QoS Parameter Configuration for IP Multicast Bandwidth Adjustment
Create the QoS profile named ipm-adjusted.
Configure a queue for ATM VC subinterfaces with the best-effort traffic class.
Configure a queue for ATM VC subinterfaces with the voice traffic class and
reference the 192K scheduler profile.
Configure a node for ATM VC subinterfaces and reference the scheduler profile
vc-subscriber.
host1(config)#qos-profile ipm-adjusted
host1(config-qos-profile)#atm-vc queue traffic-class best-effort
host1(config-qos-profile)#atm-vc queue traffic-class voice scheduler-profile 192k
host1(config-qos-profile)#atm-vc node scheduler-profile vc-subscriber
host1(config-qos-profile)#exit
Configure the ATM interface in slot 2, port 0 as a point-to-point ATM interface.
Configure the ATM PVC with aal5snap encapsulation.
Attach the QoS profile vc-subscriber to the subinterface.
Configure the IP address for the ATM subinterface.
host1(config)#interface atm 2/0
host1(config-if)#interface atm 2/0.1 point-to-point
host1(config-subif)#atm pvc 100 0 100 aal5snap
host1(config-subif)#qos-profile ipm-adjusted
host1(config-subif)#ip address 1.1.1.1 255.255.255.0