Cisco ASR 9000 Series Service Configuration Guide

Modular QoS Deployment Scenarios on Cisco ASR 9000 Series Routers
MLPPP QoS/MLFR QoS
QC-174
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
police rate 7 mbps
!
class premium
bandwidth 3 mbps
!
class be
bandwidth 3 mbps
!
class class-default
!
end-policy-map
!
show multi int multi 0/2/1/0/1
Multilink0/2/1/0/1 is up, line protocol is up
Fragmentation: disabled
Interleave: disabled
Fragment Counters: disabled
Encapsulation: PPP
Member Links: 10 active, 0 inactive <===== shows 10 members are active....
Step 2: T1 Member Goes Down, Bandwidth Requirement OK
In this step, one T1 member goes down. The total of priority policing plus minimum guaranteed
bandwidth is 13 Mbps. This is still lower than the bundle link bandwidth, which is 13,824 Mbps (1,536
kbps * 9 T1 members). It still meets the bandwidth requirement. The policy is still applied at the bundle
interface.
int Serial0/2/1/0/1/1:0
shut
commit
LC/0/2/CPU0:Aug 9 15:13:23.495 : ifmgr[188]: %PKT_INFRA-LINK-5-CHANGED : Interface
Serial0/2/1/0/1/1:0, changed state to Administratively Down
Step 3: Another T1 Member Goes Down, Bandwidth Requirement Exceeded
In this step, another T1 member goes down. The total of priority traffic plus minimum guaranteed
bandwidth is 13 Mbps. This is now higher than the bundle link bandwidth, which is 12,288 Mbps (1,536
kbps * 8 T1 members). Because it exceeds the bandwidth requirement, the policy is suspended from the
bundle interface.
int Serial0/2/1/0/1/2:0
shut
commit
LC/0/2/CPU0:Aug 9 15:13:48.424 : ifmgr[188]: %PKT_INFRA-LINK-5-CHANGED : Interface
Serial0/2/1/0/1/2:0, changed state to Administratively Down
LC/0/2/CPU0:Aug 9 15:13:48.437 : qos_ma_ea[250]: %QOS-QOS_EA_BW_CHG-6-BWCHG_LOG : QOSEA:
updated bandwidth for ifh 4004380 with 13824 Egress Policy (active->suspend)
show policy-map int multi 0/2/1/0/1 <------------- shows that the policy is suspended
Multilink0/2/1/0/1 direction input: Service Policy not installed
Multilink0/2/1/0/1 output: parent_shape
Policy State = Suspended
Reason Sum of Minimum-BW + priority with policer exceeds parent ref rate

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model