Specifications

mpls export vpnv4 prefixes
MP-164
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
mpls export vpnv4 prefixes
To configure the tracking and export of Virtual Private Network (VPN) IPv4 (VPNv4) label information
from the Multiprotocol Label Switching (MPLS) Prefix/Application/Label (PAL) table to a NetFlow
collector, use the mpls export vpnv4 prefixes command in global configuration mode. To disable the
tracking and exporting of VPNv4 label information, use the no form of this command.
mpls export vpnv4 prefixes
no mpls export vpnv4 prefixes
Syntax Description This command has no arguments or keywords.
Command Default VPNv4 labels are exported from the MPLS PAL table with a destination prefix of 0.0.0.0.
Command Modes Global configuration
Command History
Usage Guidelines Use this command to enable the tracking and export of VPNv4 label information from the MPLS PAL
ta
ble.
In MPLS PAL table records, the default prefix stored for labels allocated by VPNs, Border Gateway
Prot
ocol (BGP) IPv4, or BGP VPNv4 is intentionally 0.0.0.0. This is because VPN prefixes might be
r
eused; Other VPNs might use the same prefix.
If you configure the m
pls export vpnv4 prefixes command, the MPLS PAL table stores the VPN prefix
and its associated route distinguisher (RD). The use of an RD removes any ambiguity among VPN
prefixes. Even if IP addresses are reused, the addition of an RD creates a prefix unique.
Examples The following example shows how to configure the tracking and exporting of VPNv4 label information
f
rom the MPLS PAL table to a NetFlow collector:
configure terminal
mpls export interval 720
mpls export vpnv4 prefixes
exit
The full MPLS PAL table with MPLS VPNv4 label information is configured to export to the NetFlow
collector every 720 minutes (12 hours).
Release Modification
12.2(28)SB This command was introduced.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX This command is supported in the Cisco IOS Release 12.2SX train. Support
i
n a specific 12.2SX release of this train depends on your feature set,
platform, and platform hardware.