Junos OS

Dear community,

I have a question that it is not clearly stated in Juniper's documenation. If I am using a policer for the inbound traffic like below to change the forwarding class for the exceeded traffic of a higher forwarding class is there any change on the IPP value or only on the MPLS EXP bit value? 

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set firewall policer Policer if-exceeding bandwidth-limit 1000000
set firewall policer Policer if-exceeding burst-size-limit 1050000
set firewall policer Policer then forwarding-class Bronze

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I need to be assured that the inbound IP traffic values remain unchanged although the forwarding class is changing. I have found that there is specific configuration to remap the IPP value but I haven't found a specific statement for the default behavior.

Thank you in advance.

Haris

some more information about the forwarding classes

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set firewall family inet filter XXX term GOLD from precedence 3
set firewall family inet filter XXX term GOLD from precedence 4
set firewall family inet filter XXX term GOLD then policer Policer
set firewall family inet filter XXX term GOLD then loss-priority high
set firewall family inet filter XXX term GOLD then forwarding-class Gold
set firewall family inet filter XXX term GOLD then accept

set firewall family inet filter XXX term BRONZE from precedence 1
set firewall family inet filter XXX term BRONZE then policer Policer1
set firewall family inet filter XXX term BRONZE then loss-priority low
set firewall family inet filter XXX term BRONZE then forwarding-class Bronze
set firewall family inet filter XXX term BRONZE then accept

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NO

if you do not define any rewrite then the classification is purely internal to the device

regards

alexander

Alexander,

Thank you for your answer, this is what I am also thinking but is there any Juniper documentation to confirm this?

Hi!

I don't think you will find a direct documentation for this but until you are using re-write rule, it will not change the original values.

Thank you for confirmation.