WESM zl Management and Configuration Guide WT.01.28 and greater

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sFlow Agent
Configuring sFlow Using the Web Browser Interface
6. Optionally, alter the value in the Maximum Header Size field to set the amount
of data (in bytes) included in a sample.
The module samples the specified number of bytes. For example, if you set the
Maximum Header Size to 100, the module places the first 100 bytes of every
sampled frame in a datagram. The value should match the size of the frame and
packet header so that the entire header is forwarded. The valid range is from 100
to 128 bytes, and the default is 128.
7. Click the OK button.
8. Click the Save link to copy the configuration to the startup-config.
Manually Activating Counter Polling
In addition to sampling specific packets, an sFlow agent can gather statistics about
overall traffic flow, including:
■ the number of inbound packets
■ the number of outbound packets
■ the number of retransmission attempts
■ the number of transmission failures
■ the number of packet errors
The agent periodically polls its data sources for these statistics; for the Wireless Edge
Services zl Module, the data sources are its RP radios.
The module maintains six separate counter polling (sFlow) instances for each radio.
You can view the three configurable from the Web browser interface in the Special
Features > sFlow > Counter Polling screen.