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- Newsgroups: comp.protocols.appletalk
- Path: sparky!uunet!abtlabs.uucp!larry
- From: larry@abtlabs.uucp (Larry Pajakowski)
- Subject: AARP details clarification needed.
- Message-ID: <1992Aug20.132650.6380@abbott.com>
- Organization: Abbott Laboratories
- Date: Thu, 20 Aug 92 13:26:50 GMT
- Lines: 59
-
-
- Help.
-
- We have had a number of AARP storms and some of the network folks are
- attempting to understand what has been happening. I'm posting this for
- them. Your replys will be appreciated.
-
- As usual if there is sufficient interest I'll mail or post a summary.
-
- TNX
-
- Larry Pajakowski
- Abbott Labs.
- larry@turing.abbott.com (real e-mail address)
-
- ______________________________________________________________________
-
-
-
- We need definitive answers to the following list of questions. Most
- require exact parameter values, that should be publicly known, but which are
- not in Apple's Phase 2 "Inside AppleTalk" book. Some have definite values
- that are dependent upon the implementation for a given protocol stack.
- Where this is the case, please provide values and their associated protocol
- stacks. If known, please also provide any values suggested by Apple for
- developers. Apple has been unable to answer these questions--at least in
- the 8 days they've had to respond so far. Where appropriate, I've included
- in parentheses (chapter-page) the page number reference in "Inside
- AppleTalk, 2nd Edition" where the topic occurs.
-
-
- 1. What is the typical size of an Address Mapping Table, or how many
- entries can the AMT hold before old entries are purged to make room for new
- ones? [book just says there is a "cache" of mappings] (2-7)
-
- 2. How many AARP Probe packets must be broadcast by the protocol stack
- attempting to verify that its tentative protocol address is not in use by
- any other node on the data link? [the book just says "a number" of probe
- pkts] (2-7)
-
- 3. From book: "If [an AARP] Response packet is not received "within a
- specified time interval," then AARP retransmits the Request packet.
- The question is, WHAT is the value of the time-out interval mentioned
- above? How long must AARP wait before retransmitting the Request
- packet? (2-8)
-
- And how MANY retries are attempted? [book says just "a specified maximum
- number of times] (2-8)
-
- 4. What is the timeout value that is allowed to expire before an AMT entry
- is aged? (2-10)
-
- 5. Does a Macintosh end-node send the equivalent of a DECnet end-node's
- HELLO packet to refresh its router's AMT?
-
- 6. Does a Macintosh end-node maintain an AMT? If so, what is its size, or
- how many entries can it hold?
-
-
-