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JUNOSe 11.1.x IP Services Configuration Guide
Operation with NAT
When functioning with Network Address Translation (NAT), J-Flow sampling occurs
before NAT applies any translation.
Operation with High Availability
When high availability is enabled, the following occurs in the event of a switchover:
After the standby SRP becomes active, and all other applications indicate that they
have recovered, sampling and flow-collecting resume.
Platform Considerations
For information about modules that support J-Flow statistics on ERX14xx models,
ERX7xx models, and the ERX310 Broadband Services Router:
For information about modules that support J-Flow on the E120 and E320 Broadband
Services Routers:
Before You Configure J-Flow Statistics
Before you configure J-Flow statistics, be sure you have created IP interfaces from
which J-Flow can extract traffic flow information. For information about configuring
IP interfaces, see Configuring IP in JUNOSe IP, IPv6, and IGP Configuration Guide.
Configuring Flow-Based Statistics Collection
To configure J-Flow on a virtual router:
1.
2.
98
Platform Considerations
Any flows that are collected but not exported off of the router are lost.
Flow history is lost.
Counters are reset to zero.
See ERX Module Guide, Table 1, Module Combinations for detailed module
specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support NAT.
See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module
specifications.
See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support J-Flow.
Enable J-Flow statistics.
Enable J-Flow statistics on the desired interfaces.
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