report-zero-oif-gw-on-discard
Syntax
report-zero-oif-gw-on-discard;
Hierarchy Level
[edit chassis fpc slot-number inline-services]
Description
(MX Series only) For inline active flow monitoring, for only the flow records
for rejected, discarded, and policed flows, set the flow record value to 0
(zero) for the IPFIX information elements
ipNextHopIPv6Address (Element ID 62),
egressInterface (Element ID 14), and
ipNextHopIPv4Address (Element ID 15). If the
report-zero-oif-gw-on-discard statement is not
configured, the flow records display the available information for these
elements, which is the default behavior for not only rejected, discarded, or
policed flows, but also for all other flows. The available information for
these elements is the result of a route lookup in the forwarding table, and
is reported in the OIF/GW fields in the export flow record.
This statement does not apply to flows that are policed and sampled by
the Packet Forwarding Engine for egress interfaces. After you
configure the report-zero-oif-gw-on-discard
statement, each sampled packet updates the forwarding action of that
flow in the flow record. That is, the last sampled packet of the flow
just before export determines the forwarding action of that flow. For
example, in the case of a rate-limiting policer, the forwarding action
taken on a flow is not deterministic. The flow is treated either as
forwarded or as policed based on the forwarding action of the last
sampled packet of that flow.
You configure this statement to help you track what traffic is being dropped.
Default
The flow records display the available information for the information elements
ipNextHopIPv6Address (Element ID 62),
egressInterface (Element ID 14), and
ipNextHopIPv4Address (Element ID 15).
Required Privilege Level
Release Information
Statement introduced in Junos OS Release 15.1F7.