Cisco Cisco IOS Software Release 12.0(22)S

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The MPLS VPN Support for EIGRP Between Provider Edge (PE) and Customer Edge (CE) feature 
introduces the capability to redistribute Enhanced Interior Gateway Routing Protocol (EIGRP) routes 
through a Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) over a Border 
Gateway Protocol (BGP) core network. This feature is configured only on PE routers and requires no 
upgrade or configuration changes to customer equipment. This feature also introduces EIGRP support 
for MPLS and support for EIGRP extended community attributes. 

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12.0(22)S

This feature was introduced.

12.2(15)T

This feature was integrated into Cisco IOS Release 12.2(15)T.

12.2(18)S

This feature was integrated into Cisco IOS Release 12.2(18)S.

12.0(27)S

EIGRP back door link support was introduced. This support is provided by 
a new POI in the BGP Cost Community (Updated in this release) and 
EIGRP MPLS VPN PE-CE Site of Origin (SoO) (Introduced in this release) 
features.