Cisco 10000 Series User Manual

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Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 15 Oversubscribing Physical and Virtual Links
Configuration Examples
Configuration Example for Oversubscribing a Shaped ATM VC and VP
Example 15-10 shows how to oversubscribe a shaped ATM VC and VP.
Example 15-10 Oversubscribing an ATM Interface
Router(config)# interface atm 5/0/0
Router(config-if)# no ip address
(The following command sets up the flow bits to optimize latency and per-VC utilization factors. Also sets the system
up for Call Admission Control.)
Router(config-if)# atm over-subscription-factor 10
Router(config-if)# atm sonet stm-4
!
(The following command sets up the permanent virtual path (PVP). This is ALWAYS done at the main interface level.
It is important to note the PVP number as this is used to determine which VCs will be mapped into this PVP. The PVP
number translates to a VPI value at the VC level.)
Router(config-if)# atm pvp 68 1000 no-f4-oam
!
Router(config)# interface atm 5/0/0.68 multipoint
Router(config-subif)# atm pppatm passive
(The following VPI value of 68 ensures that these VCs will be associated with PVP 68.)
Router(config-subif)# range pvc 68/101 68/451
(The following command sets up VTMS scheduling on PXF. Packets are sent down a 512-kbps VC to the SAR
mechanism. Remember this is SHAPING (not policing) the VC. Note that the modular CLI shape command is not
used.)
Router(config-if-atm-range)# vbr-nrt 512 38 150
!
Router(config-if-atm-range)# encapsulation aal5autoppp Virtual-Template1
!
Router(config)# interface Virtual-Template1
Router(config-if)# ip unnumbered Loopback0
Router(config-if)# no ip directed-broadcast
Router(config-if)# no logging event link-status
Router(config-if)# keepalive 120
Router(config-if)# peer default ip address pool adsl
Router(config-if)# ppp authentication chap callin
Configuration Example for Configuring the Weight of a VC
Example 15-11 shows how to configure the weight for an individual VC. This weight value determines
which VCs get priority in the VP schedules in a congested state. In the example, a weight of 10 is
configured for PVC
1/32 on ATM subinterface 1/0/0.1.
Example 15-11 Configuring the Weight of an Individual VC
Router(config)# interface atm 1/0/0.1
Router(config-subif)# pvc 1/32
Router(config-if-atm-vc)# weight 10

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English