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SitePathMTPX

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Elfiq has extended its primary link concept to the SitePath technology to create the PRIMARY path. The primary path is the default site-to-site path configured into your existing firewall or VPN devices. This means NO modification to your traditional site-to-site VPN / VoIP (or any point to point) implementation.

SitePath Primary Link 500pix

Because Elfiq Link Balancers keep metrics and real time bandwidth usage on all links and path combinations, the SitePath technology exchanges this information using encrypted communication between the two balancers. With those metrics, it is easy to evaluate the effective bandwidth on all possible paths between to points. The effective bandwidth calculates in real time the maximum possible throughput for a specific path.

Monitoring the alternate paths and their respective effective bandwidth allows you to dynamically redirect the point to point transfert (VPN, VoIP or other) through the best available path without renegotiating the VPN tunnel or VoIP session. SitePathMTPX makes your point to point communication completely resilient best available path(s) according the selected SitePathMTPX aglorithm.

List of available SitePathMTPX algorithms:

 SitePath Algorithm Description 
 Weight First (WFA)  
  • Selects path through weighted preference
  • Primarily used for failover Sitepath deployments
 Best SitePath First (BSFA)  
  • Selects path through effective path bandwidth
  • Adjusts path selection over a period of time, based on statistics
 Roundtime Trip First (RTFA)  
  • Selects path used for packet transmission dynamically through effective fastest RTT metrics
 Multiplexing (MTPX)  
  • Enables bandwidth virtualization by aggregating multiple paths into one virtual path for increased throughput
  • Requires links of similar specifications and performance for optimal use

 WFA, BSFA and RTFA algorithms:
Use of one path per direction at one time

 MTPX algorithm:
Use of multiple paths at all times

SitePath Small BSFA

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SitePath Small MTPX

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In case of a link failure , which could be the primary link, the VPN / VoIP remains up with the remaining alternate paths.  

 

SitePath Link Down

Demonstration of SitePathMTPX resilience


 

In conclusion, the SitePathMTPX technology brings resilience to a traditional Site-to-site VPN / VoIP implementation and also maximizes total throughput.

SitePathMTPX technology is available on LB1000 and higher models.

Consult the Elfiq Link LB SitePathMTPX Webcast for more information.