Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
 

Network Management and Monitoring

  • sFlow technology support for exporting extended IPv4 and IPv6 tunnel egress structure (PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos Evolved OS Release 23.1R1, sFlow technology supports the export of the Extended Tunnel Egress Structure fields for traffic entering IPv4 or IPv6 GRE tunnels. These additional attributes will provide information about the GRE tunnel into which a packet entering the device will get encapsulated. The GRE tunnel could be IPv4 or IPv6. The feature is supported only when sFlow is enabled in the ingress direction wherein firewall-based GRE happens on IPv4 or IPv6 packets.

    Specifically, the below fields are reported as part of this extended structure:

    • Protocol reported as value 0x2f (GRE)

    • Source IP (IPv4 or IPv6 address of the tunnel source)

    • Destination IP (IPv4 or IPv6 address of the tunnel destination endpoint)

    The other fields such as length, source port, destination port, TCP flags, and priority will be reported as zero.

    The feature is supported for the following traffic scenarios when ingress sFlow sampling is enabled:

    • Incoming IPv4 traffic that undergoes IPv4 GRE

    • Incoming IPv6 traffic that undergoes IPv4 GRE

    • Incoming IPv4 traffic that undergoes IPv6 GRE

    • Incoming IPv6 traffic that undergoes IPv6 GRE

    [See sFlow Monitoring Technology.]