# References

For more information about BGP/MPLS VPNs, consult the following resources:

- BGP-MPLS VPN extension for IPv6 VPN—draft-ietf-l3vpn-bgp-ipv6-03.txt (December 2004 expiration)
- Connecting IPv6 Islands across IPv4 Clouds with BGP—draft-ietf-ngtrans-bgp-tunnel-04.txt (July 2002 expiration)
- JunosE Release Notes, Appendix A, System Maximums—Refer to the Release Notes corresponding to your software release for information about maximum values.
- RFC 2545—Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing (March 1999)
- RFC 2858—Multiprotocol Extensions for BGP-4 (June 2000)
- RFC 3107—Carrying Label Information in BGP-4 (May 2001)
- RFC 4364—BGP/MPLS IP Virtual Private Networks (VPNs) (February 2006)
- RFC 4684—Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs) ( 2006)

For more information about BGP and MPLS, see the References sections in Configuring BGP Routing and in Configuring MPLS.

| Note: IETF drafts are valid for only 6 months from the date of issuance. They must be considered as works in progress. Please refer to the IETF Web site at http://www.ietf.org for the latest drafts.