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Replicating Version 9 Flow Aggregation From M, MX and T Series Routers to Multiple Flow Servers

date_range 13-Jan-21

With this feature, you can configure up to eight flow servers to receive packets for a version 9 flow monitoring template. Once a flow server is configured to receive this data, it will also receive the following periodic version 9 flow monitoring updates:

  • Options data

  • Template definition

With Routing Engine-based sampling, if multiple collectors are configured with version 8 export format, all of them must use the same aggregation-type.

The option and template definition refresh period is configured on a per-template basis at the [edit services flow-monitoring] hierarchy level.

The following configuration example allows replication of version 9 export packets to two flow servers.

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forwarding-options {
    sampling {
        input {
            family inet {
                rate 1;
            }
        }
        output {
            flow-server 10.10.3.2 {
                port 2055;
                version9 {
                    template {
                        ipv4;
                    }
                }
            }
            flow-server 172.17.20.62 {
                port 2055;
                version9 {
                    template {
                        ipv4;
                    }
                }
            }
            flow-inactive-timeout 30;
            flow-active-timeout 60;
            interface sp-4/0/0 {
                source-address 10.10.3.4;
            }
        }
    }
}
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