QoS 3750ME

Answered Question
Dec 25th, 2008
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Is there any chance I can configure QoS on fastethernet port to reserve bandwith for specific networks?


I tried this configuration:


Policy Map pm-voice

Class cl-voice

bandwidth 30 (kbps)

However, I can not assign this policy map to fastethernet interface

"Bandwidthis only supported in a hierarchical policy on ES interfaces"


Any ideas?

Correct Answer by Edison Ortiz about 8 years 5 months ago

Fuad,


The error message is self-explanatory, you can only configure hierarchical QoS on ES (Enhanced Services) Ports.


The ES Ports are the SFP uplinks on the switch, the rest of ports are regular ports with limited QoS services.


More information on the 3750ME and ES Ports can be found at:

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5532/product_data_sheet0900aecd806e27b9.html


More information on QoS in the 3750ME can be found at:

http://www.cisco.com/en/US/docs/switches/metro/catalyst3750m/software/release/12.2_46_se/configuration/guide/swqos.html


HTH,


__


Edison.


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crow930us Thu, 12/25/2008 - 07:24
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The following Policy-maps donot have a default class configured.

pm-voice The class-default class is used to classify traffic that does not fall into one of the defined classes. The class-default class is predefined when the policy map created, but must be configured. If no default class is configured, then by default the traffic that does not match any of the configured classes is flow classified and given best-effort treatment.

TRY THIS: To configure the class-default class to use tail drop, use the 'bandwitdth' policy-map class configuration command to configure policy for the default class.


fgasimzade Thu, 12/25/2008 - 08:21
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Sorry, I didnt really understand. Can you please explain again? Do I have to add a default class to the existent policy map?

Correct Answer
Edison Ortiz Thu, 12/25/2008 - 09:34
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Fuad,


The error message is self-explanatory, you can only configure hierarchical QoS on ES (Enhanced Services) Ports.


The ES Ports are the SFP uplinks on the switch, the rest of ports are regular ports with limited QoS services.


More information on the 3750ME and ES Ports can be found at:

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5532/product_data_sheet0900aecd806e27b9.html


More information on QoS in the 3750ME can be found at:

http://www.cisco.com/en/US/docs/switches/metro/catalyst3750m/software/release/12.2_46_se/configuration/guide/swqos.html


HTH,


__


Edison.


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