
SAFI - Subsequence Address Family Identifier per [RFC2858]

(last updated 2006-08-15)

As specified in this document, the MPL_REACH_NLRI and MP_UNREACH_NLRI
attributes contain the Subsequence Address Family Identifier (SAFI)
field. The SAFI name space is defined in Section 9. The IANA will
maintain and register values for the SAFI namespace as follows.  SAFI
value 0 is reserved. SAFI values 1, 2, and 3 are assigned in this
document.  SAFI values 4 through 63 are to be assigned by IANA using
the "IETF Consensus" policy defined in RFC2434. SAFI values 64
through 127 are to be assigned by IANA, using the "First  Come First
Served" policy defined in RFC2434. SAFI values 128 through 255 are
for "private use", and values in this range are not to be assigned by
IANA.

Value    Description                                     Reference
-----    -----------                                     ---------
0        Reserved			

1        Network Layer Reachability Information used     [RFC2858]
         for unicast forwarding	

2        Network Layer Reachability Information used     [RFC2858]   
         for mulitcast forwarding
	
3        Network Layer Reachability Information used     [RFC2858]
         for both unicast and multicast forwarding

4        Network Layer Reachability Information (NLRI)   [RFC3107]
         with MPLS Labels

5-63     Unassigned 

64       Tunnel SAFI                                    [Nalawade]

65       Virtual Private LAN Service (VPLS)             [Kompella]

66       BGP MDT SAFI                                   [Nalawade]

67       BGP 4over6 SAFI                                     [Cui]

68-127   Unassigned

128      MPLS-labeled VPN address                        [RFC4364]

129-255  Private Use


References
----------
[RFC2858]  Bates, T., Rekhter, Y., Chandra, R., and Katz, D., 
           "Multiprotocol Extensions for BGP-4", RFC 2858, June 2000.

[RFC3107]  Y. Rekhter and E. Rosen, "Carrying Label Information in 
           BGP-4", RFC 3107, May 2001.

[RFC4364]  E. Rosen and Y. Rekhter, "BGP/MPLS IP VPNs", RFC 4364, February 2006.


People
------
[Bates] Tony Bates, <tbates@cisco.com>, July 2000. 

[Cui]  Yong Cui, <cuiyong@tsinghua.edu.cn>, 15 August 2006.

[Kompella]  Kireeti Kompella <kireeti@juniper.net>, February 2004

[Nalawade]  Gargi Nalawade, <gargi@cisco.com>, January 2004. 
           (draft-nalawade-kapoor-tunnel-safi-01.txt)  
           (draft-nalawade-idr-mdt-safi-00.txt), February 2004.

(created July 2000)

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