[j-nsp] MX ping - ToS overrided

[Arash Alizadeh]

Hi David,
 
Thank's for this input.
Appears that host-outbound-traffic is active in the boxes which causes the rewrite. One could argue if this is reasonable to use, but it is infact the case at the moment.
 
Thanks again.
 
Regards,
Arash
 
> From: david.roy at orange.com
> To: david.roy at orange.com; arash.a at hotmail.se; juniper-nsp at puck.nether.net
> Date: Wed, 22 Jan 2014 15:40:50 +0100
> Subject: RE: [j-nsp] MX ping - ToS overrided
> 
> 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.
>