3

This is on a Nexus N5624Q.

I have this TA-queuing service policy :

policy-map type queuing TA-queuing
  class type queuing queue-cos1
    bandwidth percent 20
  class type queuing queue-cos2
    bandwidth percent 10
  class type queuing queue-cos4
    bandwidth percent 15
  class type queuing queue-cos5
    bandwidth percent 5
  class type queuing class-fcoe
    bandwidth percent 0
class-map type queuing queue-cos1
  match qos-group 2
class-map type queuing queue-cos2
  match qos-group 3
class-map type queuing queue-cos4
  match qos-group 4
class-map type queuing queue-cos5
  match qos-group 5

When I want to apply the service policy on an interface, I get an error stating "Bandwidth percent exceeds 100" :

N5624-A-1(config-if)# service-policy type queuing input TA-queuing
ERROR: Bandwidth percent exceeds 100

But the bandwidth parameters do not add up to 100, they only add up to 50, so I don't understand why this error keeps happening?

5

The default-class uses (by default) 50 percent of the available bandwidth. You can reduce that value as part of your policy-map. For example:

policy-map type queuing TA-queuing
...
class-type queuing class-default
  bandwidth 25
| improve this answer | |
  • Also, by default, you can only assign something like 75% of the bandwidth. That's why it will add up to 125%. – Ron Maupin Apr 25 '16 at 12:54
0

Note: On any interface only 75% of the bandwidth is available for QoS.

| improve this answer | |
  • While your answer is, by default, correct, you should improve your answer by quoting this from the Cisco documentation, and providing a link to support your answer. You can find the max-reserved-bandwidth command in Cisco's QoS documentation. – Ron Maupin Apr 30 '16 at 14:55

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