[c-nsp] MPLS qos on 6500/sup720 - setting EXP when it shouldn't?

[Dmitry Valdov]

It only affects 3B(XL) systems. 3C(XL) doesn't have this bug.


On Thu, 18 Nov 2010, daigo nakayama wrote:

>> #sh mls qos detailed
>>  QoS ip packet dscp rewrite disabled globally
>
> If there is the following command in your config, the command might be a cause.
>
> no mls qos rewrite ip dscp
>
> ---
> nkymdg
>
>
> 2010/11/17 Phil Mayers <p.mayers at imperial.ac.uk>:
>> On 17/11/10 12:50, Manu Chao wrote:
>>>
>>> Can you please send "show mls qos detailed"?
>>
>> #sh mls qos detailed
>> ═QoS is enabled globally
>> ═Policy marking depends on port_trust
>> ═QoS ip packet dscp rewrite disabled globally
>> ═Input mode for GRE Tunnel is Pipe mode
>> ═Input mode for MPLS is Pipe mode
>>
>> ═QoS is vlan-based on the following interfaces:
>> ═ ═Te1/1 Te1/5 Te2/1 Te2/2 Te2/3 Gi8/41 Gi9/39 Po1 Po2
>> ═Vlan or Portchannel(Multi-Earl) policies supported: Yes
>> ═Egress policies supported: Yes
>>
>>
>> ...then a load of per-module stats noise - representative example:
>>
>> ═----- Module [1] -----
>> Traffic: ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═Total pkt's
>> ---------------------------------------------
>>
>> Total packets: ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ 559899
>> IP shortcut packets: ═ ═ ═ ═ ═ ═ ═ ═ ═ 557056
>> Packets dropped by
>> policing: ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ 0
>> IP packets with TOS
>> changed by policing: ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═0
>> IP packets with COS
>> changed by policing: ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═769
>> Non-IP packets with COS
>> changed by policing: ═ ═ ═ ═ ═ ═ ═ ═ ═ 474422
>> MPLS packets with EXP
>> changed by policing: ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═0
>>
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>
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-- 
Dmitry Valdov
CCIE #15379 (R&S and SP)