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Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 9 Raw Data Formatting: The RDR Formatter and NetFlow Exporting
RDR Formatter and NetFlow Exporting Support
Setting DSCP for NetFlow
When using the NetFlowV9 protocol, priority can be defined by configuring a DSCP value to be assigned
to the NetFlow packets. This DSCP value defines the DiffServ level of the NetFlow traffic to all
destinations.
Forwarding Modes
When more than one destination is defined for a category, the system must decide which of these
destinations is to receive the data. This is determined by the forwarding mode. There are three
forwarding modes:
•
Redundancy—All records are sent only to the primary (active) connection. If the primary connection
fails, the records will be sent to the connected destination with the next highest priority.
•
Multicast—All records are sent to all destinations. This feature may negatively affect performance
in an installation with a high rate of data.
•
Simple load balancing—Each successive record is sent to a different destination, one destination
after the other, in a round robin manner. It is the responsibility of the collectors to aggregate the
records.
If one connection fails, the contents of the history buffer are sent to all connected destinations.
Note
Some types of deployments using the NetFlow protocol require multicast forwarding mode. In a
deployment where there are multiple destinations for at least one category, and at least one of those is a
NetFlow destination, the multicast forwarding mode must be configured.
Protocol
The following two protocols are supported:
•
The RDR Formatter: the Service Control proprietary protocol
•
NetFlow V9: an industry standard protocol
These two protocols can be used simultaneously in the same deployment. However, each formatter
destination can support only one protocol.
Transport Type
The following two transport types are available:
•
TCP
•
UDP
Currently, the transport type is linked to the configured protocol as follows:
•
RDRv1 protocol requires TCP transport type
•
NetFlow V9 protocol requires UDP transport type