[c-nsp] Xconnect Precednce

[Mohammad Khalil]

Thanks Arie
Would configuring the below commands under the interface level do the trick ?



mls qos
trust cos

mls qos
trust dscp


BR,
Mohammad

From: ariev at vayner.net
Date: Sun, 20 Sep 2015 17:31:47 +0000
Subject: Re: [c-nsp] Xconnect Precednce
To: eng_mssk at hotmail.com; cisco-nsp at puck.nether.net

By default the 7600 and 6500 (assuming mls qos is enabled) would not trust incoming marked traffic, and classify it as BE. On egress they would overwrite the DHCP value according to the ingress classification. 
So you need to look into the specific qos implementation of 6500/7600, which is not trivial. 
The other thing you need to look into are the qos models for MPLS (uniform and pipe) and how they apply on the 7600.
Tnx, Arie 

On Sun, Sep 20, 2015, 08:23 Mohammad Khalil <eng_mssk at hotmail.com> wrote:



Hi arie , thanks for the reply

My CE is 6509



access-list 105 permit ip any any precedence routine log

access-list 105 permit ip any any precedence priority log

access-list 105 permit ip any any precedence immediate log

access-list 105 permit ip any any precedence flash log

access-list 105 permit ip any any precedence flash-override
log

access-list 105 permit ip any any precedence critical log

access-list 105 permit ip any any precedence internet log

access-list 105 permit ip any any precedence network log

access-list 105 permit ip any any

 

interface GigabitEthernet0/1.56



encapsulation dot1Q 56

ip address 10.3.3.1 255.255.255.0

ip access-group 105 in

ip access-group 105 out
My PE configuration
interface vlan 56xconnect x.x.x.x 56 encapsulation mpls
Thanks
BR,Mohammad
From: ariev at vayner.net
Date: Sun, 20 Sep 2015 14:58:28 +0000
Subject: Re: [c-nsp] Xconnect Precednce
To: eng_mssk at hotmail.com; cisco-nsp at puck.nether.net

Mohammed, 
Can you please provide the complete interface configuration? Is this the PE or the CE? Which platform is it? 
Generally speaking, layer 2 pseudowires should use layer 2 COS for traffic classification. 
Tnx, Arie 

On Sat, Sep 19, 2015, 03:21 Mohammad Khalil <eng_mssk at hotmail.com> wrote:
Hi all

I am trying to test different tos values between CEs

What am trying to test is default traffic which will fall into the routine traffic and another flow which should fall in the critical traffic (tos=160)



My access-list looks as below





access-list 105 permit ip any any precedence routine log



access-list 105 permit ip any any precedence priority log



access-list 105 permit ip any any precedence immediate log



access-list 105 permit ip any any precedence flash log



access-list 105 permit ip any any precedence flash-override

log



access-list 105 permit ip any any precedence critical log



access-list 105 permit ip any any precedence internet log



access-list 105 permit ip any any precedence network log



access-list 105 permit ip any any









interface GigabitEthernet0/1.56ip access-group 105 in



ip access-group 105 out





ping 10.3.3.1 repeat 19 tos 160



ping 10.3.3.1 repeat 15







Probe#sh ip access-lists

105



Extended IP access list 105



    10 permit ip any any precedence routine log (34 matches)





    20 permit ip any any precedence priority

log



    30 permit ip any any precedence immediate

log



    40 permit ip any any precedence flash log



    50 permit ip any any precedence

flash-override log



    60 permit ip any any precedence critical log





    70 permit ip any any precedence internet

log



    80 permit ip any any precedence network

log



    90 permit ip any any

The 19 ICMP packets should fall into the critical

I have tested this on GNS3 and it worked fine !

Is there something global should be enabled on the PE which is 7606?



BR,Mohammad











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