AT-9000 Switch Command Line User’s Guide
Section X: Network Management 851
Number of ingress packets with unknown protocols
To configure the agent to forward these port statistics to a collector, you
have to specify polling rates, which define the maximum amount of time
permitted between successive queries of the counters of a port by the
agent.
Different ports can have different polling rates. Ports to which critical
network devices are connected may be assigned low polling rates, so that
the information on the collector is kept up-to-date. Ports connected to less
critical devices may be assigned higher polling rates.
To increase its efficiency, the agent may send port status and counter
information before the polling interval of a port times out. For example, if
you define a polling interval of five minutes for a port, the agent, depending
on its internal dynamics, may send the information to the collector before
five minutes have actually elapsed.
Guidelines Here are the guidelines to the sFlow agent.
You can specify just one sFlow collector.
The switch must have a management IP address. For instructions,
refer to Chapter 9, “IPv4 and IPv6 Management Addresses” on page
201.
If the sFlow collector is not a member of the same subnet as the
management IP address of the switch, the switch must be able to
access the subnet in which the collector is located, through routers or
other Layer 3 devices.
If the sFlow collector is not a member of the same subnet as the
management IP address of the switch, the switch must have a default
gateway that specifies the first hop to reaching the collector’s subnet.
For instructions, refer to Chapter 9, “IPv4 and IPv6 Management
Addresses” on page 201.
This feature is not dependent on SNMP. You do not have to enable or
configure SNMP on the switch to use it. Additionally, you cannot use
an sFlow collector with SNMP to configure or manage this feature.
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