[j-nsp] Load balancing: hash algorithm

[Paul Goyette]

The specific algorithm differs on different chipsets, and is
generally considered to be a "trade secret" of Juniper.  This
decision was made several years ago when I suggested filing a
patent application for one of the chipset's algorithm.

Paul Goyette
Juniper Networks Customer Service
JTAC Senior Escalation Engineer
Juniper Security Incident Response Team
PGP Key ID 0x53BA7731 Fingerprint:
  FA29 0E3B 35AF E8AE 6651
  0786 F758 55DE 53BA 7731 

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of 
> samuel.gay at bt.com
> Sent: Thursday, July 17, 2008 1:59 AM
> To: david.roy at orange-ftgroup.com; juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] Load balancing: hash algorithm
> Importance: High
> 
> 
> > The hash algorithm uses the source IP address, the 
> destination IP address, the Protocol field and the Incoming 
> Interface Index in order to generate a key. 
> 
> Thanks David. How is chosen the next-hop with this generate 
> key? I am looking for this algorithm.
> 
> Regards,
> Samuel
> 
> 
> 
> -----Message d'origine-----
> De : david.roy at orange-ftgroup.com 
> [mailto:david.roy at orange-ftgroup.com] 
> Envoyé : jeudi 17 juillet 2008 10:55
> À : Gay,S,Samuel,JPECS R; juniper-nsp at puck.nether.net
> Objet : RE: [j-nsp] Load balancing: hash algorithm
> 
> 
> Hi,
> 
> The hash algorithm uses the source IP address, the 
> destination IP address, the Protocol field and the Incoming 
> Interface Index in order to generate a key. 
> 
> Regards
> David 
> 
> -----Message d'origine-----
> De : juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] De la part de 
> samuel.gay at bt.com Envoyé : jeudi 17 juillet 2008 10:46 À : 
> juniper-nsp at puck.nether.net Objet : [j-nsp] Load balancing: 
> hash algorithm
> 
> Hi Group,
> 
> Do you know how work hash algorithm used in load balancing 
> (only layer-3)? Is there some documentation about it?
> 
> Thanks,
> Samuel 
> 
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