The Routing Over Large Clouds Mailing List Archive by date[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] From ARP to NHRP.... Re: From ARP to NHRP....
Andy's summary reflects my understanding as well. Andy's summary reflects my understanding as well. The only thing I'd add is that I believe we agreed that NHRP servers would never leak mappings to an ARP server. that NHRP servers would never leak mappings to an ARP server. >Attempting to clear up the confusion ... here is how the transition will >Attempting to clear up the confusion ... here is how the transition will >work: > >Step 1: Only ARP servers are used as per RFC 1577. >Step 1: Only ARP servers are used as per RFC 1577. > >Step 2: NHRP is phased in: > 2a. Hosts continue to register with the ARP server (until > 2a. Hosts continue to register with the ARP server (until > ARP servers go away, for the benefit of non-NHRP hosts). > ARP servers go away, for the benefit of non-NHRP hosts). > ARP servers will leak registrations to NHRP servers, so NHRP > ARP servers will leak registrations to NHRP servers, so NHRP > hosts don't have to register twice if they don't wish to > (but then they must agree to certain defaults, such as the > registration timeout period). If NHRP hosts wish to set > these values, then they must also register with the NHRP > server. Explicit registrations always take precedence over > leaked registrations. > 2b. NHRP source hosts send all address resolution requests > to the NHRP server (without regard to the "mask and match" > operation). > 2c. NHRP source hosts may send ARP requests to their ARP > 2c. NHRP source hosts may send ARP requests to their ARP > server if they get a NHRP NAK and the destination is in the > server if they get a NHRP NAK and the destination is in the > same LIS. > >Step 3: NHRP servers completely replace ARP servers. All hosts >Step 3: NHRP servers completely replace ARP servers. All hosts > are NHRP-capable. ARP servers no longer exist. > are NHRP-capable. ARP servers no longer exist. > >Andy >Andy > >__________________________________________________________________________ >Andrew G. Malis malis@maelstrom.timeplex.com +1 508 266-4522 >Andrew G. Malis malis@maelstrom.timeplex.com +1 508 266-4522 >Ascom Timeplex 289 Great Rd., Acton MA 01720 USA FAX: +1 508 264-4999 >Ascom Timeplex 289 Great Rd., Acton MA 01720 USA FAX: +1 508 264-4999 > > > David M. Piscitello Core Competence, Inc. 1620 Tuckerstown Road Dresher, PA 19025 USA Dresher, PA 19025 USA 1.215.830.0692 dave@corecom.com |
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