Hello Yakhov,. In the basic BGP draft, it is stated that multiple NLRIs can be carried in a single update message only if their path attributes are similar
" Section 3.1 ..................... Multiple routes that have the same path attributes can be advertised in a single UPDATE message by including multiple prefixes in the NLRI field of the UPDATE message. " rfc2858 which talks about carrying MP_REACH_NLRI , gives provision for carrying nexthop in the mp-reach-nlri itself. The mandatory nexthop attribute is therefore not used for prefixes in the MP_REACH_NLRI. Therefore,can we send two sets of prefexies one in the MP_REACH_NLRI with its own NExthop in the NLRI attribute itself and another set of NLRI in the update message which uses the mandatory next hop attribute. The text in rfc2858 does nt seem to prohibit this or permit this. Specifically, can we carry IPv4 and IPv6 prefixes in the same update message if all other attributes except the next hop are same. What about the case where the v6 next hop is derived from v4, ie, a v6 mapped v4 address. Regards, Vijay -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
