[j-nsp] MX ping - ToS overrided

[david.roy at orange.com]

I meant host-outbound-traffic ;) 

 
David Roy 
IP/MPLS NOC engineer - Orange France
Ph. : +33 2 99 87 64 72
Mob. : +33 6 85 52 22 13
SkypeID : davidroy.35
david.roy at orange.com
 
JNCIE x3 (SP #703 ; ENT #305 ; SEC #143)



-----Message d'origine-----
De : juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] De la part de david.roy at orange.com
Envoyé : mercredi 22 janvier 2014 15:39
À : 'Arash Alizadeh'; juniper-nsp at puck.nether.net
Objet : Re: [j-nsp] MX ping - ToS overrided

Not the case with 12.3R4 for me :

ping 8.8.8.8 tos 96 

15:37:03.950763 Out IP (tos 0x60, ttl  64, id 64980, offset 0, flags [none], proto: ICMP (1), length: 84) X.X.X.X > 8.8.8.8: ICMP echo request, id 34658, seq 3, length 64

Do you have host-inbound-traffic knob or Output FWF on lo0 that rewrites control plane ? 


 
David Roy
IP/MPLS NOC engineer - Orange France
Ph. : +33 2 99 87 64 72
Mob. : +33 6 85 52 22 13
SkypeID : davidroy.35
david.roy at orange.com
 
JNCIE x3 (SP #703 ; ENT #305 ; SEC #143)



-----Message d'origine-----
De : juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] De la part de Arash Alizadeh Envoyé : mercredi 22 janvier 2014 15:22 À : juniper-nsp at puck.nether.net Objet : [j-nsp] MX ping - ToS overrided

Hi,
 
I'm experiencing issues when initating ToS ping from MX devices. The specified ToS argument just seems to be overrided to dec 192 when leaving the interface.
 
I verified this with the traffic monitor on the egress interface:
 
user at node> ping 8.8.8.8 tos 96
64 bytes from 8.8.8.8: icmp_seq=0 ttl=246 time=15.675 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=246 time=15.385 ms
 
user at node> monitor traffic interface xe-0/0/0.0 extensive matching icmp PFE proto 2 (ipv4): (tos 0xc0, ttl 255, id 16332, offset 0, flags [none], proto: ICMP (1), length: 84) x.x.x.x > 8.8.8.8: ICMP echo reply, id 47826, seq 0, length 64
14:06:58.721197 Out 
 
I've tried this on 11.4R6.6 and 12.3R4-S2 (ppc and 64-bit) boxes with the same result.
 
Did anyone else ran into this issue? 
Any input is appriciated. 
 
Regards,
Arash
 		 	   		  
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_________________________________________________________________________________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.

This message and its attachments may contain confidential or privileged information that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and delete this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified.
Thank you.