The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] doubt regarding transport address advertisement (LDP/RFC-3036)
The following sections are picked up from RFC 3036. ------------section 1------------------- "An LSR MUST advertise the same transport address in all Hellos that advertise the same label space. This requirement ensures that two LSRs linked by multiple Hello adjacencies using the same label spaces play the same connection establishment role for each adjacency." ----------section 2-------------------------- LSR1 determines the transport addresses to be used at its end (A1) and LSR2's end (A2) of the LDP TCP connection. Address A1 is determined as follows: a. If LSR1 uses the Transport Address optional object (TLV) in Hello's it sends to LSR2 to advertise an address, A1 is the address LSR1 advertises via the optional object; b. If LSR1 does not use the Transport Address optional object, A1 is the source address used in Hellos it sends to LSR2. ---------------------end-of-section2------- Suppose there are multiple links between LSR1 and LSR2. IF LSR1 does not use the Transport Address optional object, the Transport address will be the source address used in HELLOs it sends to LSR2 (as specified in section-2) and HELLOs sent on multiple links will be having different source addresses. BUT RFC-3036 clearly says: "An LSR MUST advertise the same transport address in all Hellos that advertise the same label space". (Refer section-1 given above). How can it be done? I hope my interpretation of given sctions are correct. Regards -Ashish Get your FREE download of MSN Explorer at http://explorer.msn.com
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