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Replicating M, MX and T Series Routing Engine-Based Sampling to Multiple Flow Servers

date_range 13-Jan-21

Routing Engine-based sampling supports up to eight flow servers for both flow monitoring version 5 and version 8 configurations. The total number of flow servers is limited to eight, regardless of how many are configured for version 5 or version 8.

When you configure version 5 or version 8 sampling, the export packets are replicated to all flow servers configured to receive them. If two flow servers are configured to receive version 5 records, both flow servers will receive records for a specified flow.

Note:

With Routing-Engine-based sampling, if multiple flow servers are configured with version 8 export format, all of them must use the same aggregation type (for example, all flow servers receiving version 8 export could be configured for source-destination aggregation type).

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

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[edit]
forwarding-options {
    sampling {
        input {
            rate 1;
            }
        }
        output {
            flow-server 10.10.3.2 {
                port 2055;
                version 5;
                source-address 192.168.164.119;
            }
            flow-server 172.17.20.62 {
                port 2055;
                version 5;
                source-address 192.168.164.119;
            }
        }
    }
}
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