High Performance Delay Monitoring for SRv6 Based SD-WANs
High Performance Delay Monitoring for SRv6 Based SD-WANs

    
    
                
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            Abstract:Software-Defined Wide Area Networks (SD-WANs) are used to provide services to enterprises with geographically dispersed locations in a flexible and efficient way. We focus on SD-WAN services based on the Segment Routing over IPv6 (SRv6) technology. Performance Monitoring solutions are needed in SD-WANs to detect performance degradation and outages, and optimize network operations.
In this paper, we describe a high performance solution for end-to-end delay monitoring for SRv6 based SD-WAN services. The proposed solution leverages the Simple Two-way Active Measurement Protocol (STAMP) to monitor the delay of an SRv6 path between two nodes called STAMP Session-Sender and Session-Reflector. We describe three implementations of the STAMP Session-Sender and Session-Reflector for a Linux software router and compare their performance. In particular, two implementations are based on user space processing and one is based on eBPF. The results show that the eBPF-based implementation outperforms the user space implementations and has a negligible impact on the forwarding capacity of the Linux software router.
    

    
    
  
      Submission history From: Stefano Salsano [view email]                  [v1]
        Sat, 24 Dec 2022 01:24:23 UTC (7,575 KB)
    [v2]
        Sat, 31 Dec 2022 16:31:17 UTC (7,796 KB)
