sFlow Agent Address Assignment
The sFlow collector uses the sFlow agent’s IP address to determine the source of the sFlow data. You can configure the IP address of the sFlow agent to ensure that the agent ID of the sFlow agent remains constant. If you do not specify the IP address to be assigned to the agent, an IP address is automatically assigned to the agent based on the following order of priority of interfaces configured on the device:
Routers and EX Series Switches |
QFX Series Devices |
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If neither of the preceding interfaces has been configured, the IP address of any Layer 3 interface or the routed VLAN interface (RVI) is assigned to the agent. At least one interface must be configured on the switch for an IP address to be automatically assigned to the agent. When the agent’s IP address is assigned automatically, the IP address is dynamic and changes when the switch reboots.
sFlow data can be used to provide network traffic visibility information. You can explicitly configure the IP address to be assigned to source data (sFlow datagrams). If you do not explicitly configure that address, the IP address of the configured Gigabit Ethernet interface, 10-Gigabit Ethernet interface, or the RVI is used as the source IP address.