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Enterprise QoS Solution Reference Network Design Guide

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Chapter 3 WAN Aggregator <strong>QoS</strong> <strong>Design</strong><br />

Version 3.3<br />

no atm ilmi-keepalive<br />

!<br />

interface ATM3/IMA0.12 point-to-point<br />

ip address 10.6.12.1 255.255.255.252<br />

pvc 0/100<br />

vbr-nrt 3072 3072 ! ATM PVC speed expanded<br />

max-reserved-bandwidth 100 ! Overrides the default 75% BW limit<br />

service-policy output WAN-EDGE ! Attaches MQC policy to PVC<br />

!<br />

!<br />

Verification commands:<br />

show policy map<br />

show policy-map interface<br />

show atm pvc<br />

show ima interface atm<br />

Verification Command: show ima interface atm<br />

WAN Edge Link-Specific <strong>QoS</strong> <strong>Design</strong><br />

The show ima interface atm command is useful for verifying that all members of an ATM IMA group<br />

are active. See Example 3-32.<br />

Example 3-32 show ima interface atm Verification of ATM IMA Group<br />

WAG-7206-Left#show ima interface atm 3/ima0<br />

Interface ATM3/IMA0 is up<br />

Group index is 1<br />

Ne state is operational, failure status is noFailure<br />

Active links bitmap 0x3<br />

IMA Group Current Configuration:<br />

Tx/Rx configured links bitmap 0x3/0x3<br />

Tx/Rx minimum required links 1/1<br />

Maximum allowed diff delay is 25ms, Tx frame length 128<br />

Ne Tx clock mode CTC, configured timing reference link ATM3/0<br />

Test pattern procedure is disabled<br />

IMA Group Current Counters (time elapsed 257 seconds):<br />

0 Ne Failures, 0 Fe Failures, 0 Unavail Secs<br />

IMA Group Total Counters (last 5 15 minute intervals):<br />

0 Ne Failures, 0 Fe Failures, 0 Unavail Secs<br />

IMA link Information:<br />

Link Physical Status NearEnd Rx Status Test Status<br />

---- --------------- ----------------- -----------<br />

ATM3/0 up active disabled<br />

ATM3/1 up active disabled<br />

ATM3/2 administratively down unusableInhibited disabled<br />

ATM3/3 administratively down unusableInhibited disabled<br />

Very-High-Speed (DS3-OC3+) ATM Links<br />

Recommendation: Use newer hardware platforms and keep an eye on CPU levels.<br />

<strong>Enterprise</strong> <strong>QoS</strong> <strong>Solution</strong> <strong>Reference</strong> <strong>Network</strong> <strong>Design</strong> <strong>Guide</strong><br />

3-39

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