[j-nsp] Re: Faster OSPF DD Exchange

Hannes Gredler hannes at juniper.net
Thu Dec 15 05:34:13 EST 2005


Anup T wrote:
> According to RFC 2328, we send 1 DD packet, wait till the ack is seen 
> and only then send the next DD pkt.  We can improve upon this. The idea 
> is to send N DD packets initially. Then, as and when an ack is seen, 
> send the next DD pkt.

anup,

rfc2328 has a pretty clear language on this:

10.1.  Neighbor states

     [ ... ]

         Exchange
             In this state the router is describing its entire link state
             database by sending Database Description packets to the
             neighbor.  Each Database Description Packet has a DD
             sequence number, and is explicitly acknowledged.  Only one
             Database Description Packet is allowed outstanding at any
             one time.

     [ ... ]


may i ask you why you have asked this question to the juniper-nsp list ?
is there something wrong with our OSPF implementation that you want to report ?

/hannes


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