MPLS based VPN

[Rajpaul, Param]

Hi All,
 I am currently doing a study on VPNs. I am intrested in knowing about
MPLS based VPNs. I am not able to find any IETF - Draft on this. Please
suggest me some references (URLs) on this and also if any standards are
available. The RFC 2764, "A Framework for IP Based VPNs", gives some
references to MPLS based VPNs.( [10], [11], [12], [13] ), but I am not
able to find any of these at IETF site.

Kindly help me in getting these references.

Thanking You.

Param

VPN is sponsored by SecurityFocus.COM