Cisco Cisco IOS Software Release 12.0(24)S 白書
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Cisco IOS Release 12.0(24)S
MPLS-aware NetFlow
Multiprotocol Label Switching (MPLS)-aware NetFlow is an extension of the NetFlow accounting
feature that provides highly granular traffic statistics for Cisco routers. It collects statistics on a per-flow
basis just as NetFlow does. A flow is a unidirectional set of packets (IP or MPLS) that arrives at the
router on the same subinterface, has the same source and destination IP addresses, has the same Layer 4
protocol, the same TCP/UDP source and destination ports, and the same type of service (TOS) byte in
the IP header. In addition, an MPLS flow contains up to three of the same incoming MPLS labels of
interest with experimental bits and end-of-stack bits in the same positions in the packet label stack.
MPLS-aware NetFlow captures MPLS traffic that contains both IP and non-IP packets. It reports non-IP
packets, but sets the IP NetFlow fields to 0. MPLS-aware NetFlow uses the NetFlow Version 9 export
format. MPLS-aware NetFlow exports up to three labels of interest from the incoming label stack, the
IP address associated with the top label, as well as traditional NetFlow data.
feature that provides highly granular traffic statistics for Cisco routers. It collects statistics on a per-flow
basis just as NetFlow does. A flow is a unidirectional set of packets (IP or MPLS) that arrives at the
router on the same subinterface, has the same source and destination IP addresses, has the same Layer 4
protocol, the same TCP/UDP source and destination ports, and the same type of service (TOS) byte in
the IP header. In addition, an MPLS flow contains up to three of the same incoming MPLS labels of
interest with experimental bits and end-of-stack bits in the same positions in the packet label stack.
MPLS-aware NetFlow captures MPLS traffic that contains both IP and non-IP packets. It reports non-IP
packets, but sets the IP NetFlow fields to 0. MPLS-aware NetFlow uses the NetFlow Version 9 export
format. MPLS-aware NetFlow exports up to three labels of interest from the incoming label stack, the
IP address associated with the top label, as well as traditional NetFlow data.
A network administrator can turn on MPLS-aware NetFlow inside an MPLS cloud on a subset of
provider backbone (P) routers. These routers can export MPLS-aware NetFlow data to an external
NetFlow collector device for further processing and analysis or show NetFlow cache data on a router
terminal. MPLS-aware NetFlow statistics can be used for detailed MPLS traffic studies and analysis.
provider backbone (P) routers. These routers can export MPLS-aware NetFlow data to an external
NetFlow collector device for further processing and analysis or show NetFlow cache data on a router
terminal. MPLS-aware NetFlow statistics can be used for detailed MPLS traffic studies and analysis.
Feature Specifications for MPLS-aware NetFlow
Determining Platform Support Through Cisco Feature Navigator
Cisco IOS software is packaged in feature sets that are supported on specific platforms. To obtain
updated information about platform support for this feature, access Cisco Feature Navigator.
Cisco Feature Navigator dynamically updates the list of supported platforms as new platform support is
added for the feature.
updated information about platform support for this feature, access Cisco Feature Navigator.
Cisco Feature Navigator dynamically updates the list of supported platforms as new platform support is
added for the feature.
Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software
images support a specific set of features and which features are supported in a specific Cisco IOS image.
You can search by feature or release. In the release section, you can compare releases side by side to
display both the features unique to each software release and the features that releases have in common.
images support a specific set of features and which features are supported in a specific Cisco IOS image.
You can search by feature or release. In the release section, you can compare releases side by side to
display both the features unique to each software release and the features that releases have in common.
Feature History
Release
Modification
12.0(24)S
This feature was introduced.
Supported Platforms
Cisco 12000 series (For specific line cards that support this feature, see