Juniper JUNOSE 11.2.X IP SERVICES, Configuration Manual

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exports the flow cache entry from the cache and removes it. When, at a later time, another
datagram begins that uses the same flow characteristics, the virtual router allocates a
new flow cache entry, and the inactivity timer begins again. The possible range for the
inactivity timer value is 10 – 600 seconds. The default value is 15 seconds.
ip flow-cache timeout inactive
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Use to define the inactivity timer, in seconds.
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Example
host1(config)# ip flow-cache timeout inactive 90
•
Use the no version to return the inactivity timer to its default value (15 seconds).
•
See ip flow-cache timeout.
Specifying Flow Export
Use the ip flow-export command to specify the location to which you want to export
the J-Flow datagrams.
ip flow-export
•
Use to specify the location to which you want to export J-Flow datagrams or specify
an alternate source address for outbound export J-Flow datagrams.
•
Example 1-Specifies the destination address for J-Flow datagrams
host1(config)# ip flow-export 192.168.2.73 2055 version 5 peer-as
•
Example 2-Specifies the source address for outbound export J-Flow datagrams
host1(config)# ip flow-export source fastEthernet 5/0
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Use the no version to remove the export setting.
•
See ip flow-export.
Configuring Aggregation Flow Caches
Aggregation caches are disabled by default. Exporting flow records from the router does
not occur while it is in the disabled state. When the configuration for an aggregation
cache is changed from enabled to disabled state, all flow records from that cache are
removed and flow collection stops.
For Prefix, Destination Prefix, and Source Prefix aggregation caches, you can specify a
minimum source and destination mask size to affect the granularity of the IP address
space captured in the aggregation cache. The commands to configure the minimum
mask size for the source and destination address are issued in Flow Cache Configuration
mode and are specific to each aggregation cache:
host1(config-flow-cache)# mask source minimum value
host1(config-flow-cache)# mask destination minimum value
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JunosE 11.2.x IP Services Configuration Guide