Reserving bandwidth using QOS

Unanswered Question
Feb 1st, 2008


I am using below config to reserve bandwidth. will the config work.

class-map match-all AB

match access-group name C

policy-map Test

class AB

bandwidth 500

interface Port-channel1

ip address x.x.x.x x.x.x.x

ip ospf network point-to-point

service-policy output Test

I have this problem too.
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htarra Thu, 02/07/2008 - 15:15

Don't forget to use "max-reserved-bandwidth 100" on the interface with the policy. If you don't you are limited to having 75% of the BW of the interface "reservable" since IOS "keeps" 25% for overhead. If you know what your traffic is, use the above so you can control 100%.

Note: in our QoS policies we always have a class for telnet/ssh/ftp/syslog/ntp/etc. so we can reach the device even when it's busy...


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