Subject: [Tsvwg] (No Subject)

From: "Mohammed P.A Ashraf " <[email-masked]>
Date: Tue, 04 Dec 2001 19:31:03 -0800

I have some basic queries from sctp.Could some one pls calrify my queries

1. In a multihomed host, is it possble for two different applications(on same machine)with same port number and using IP addresse to make an 
association to tha same destination end point.
for e.g suppsoe HOST A wants to make an association with HOST b(ip address IP1 and port x)
Is thi scenario a valid one:
First association: 
Host A                            Host B
 (IPA1,port Ay)       ------        IpB1 and port Bx)

second one:
Host A                            Host B
 (IPA2,port Ay)       ------        IpB1 and port Bx)
I think as per def. and requirement for an association, this is a pefect scenario, but in this case trasport layer to route/demux the 
messages to the upper layer has to look into Ipaddress as well as port(which is not the case in UDP or TCP)

2. Should the packet be discared if we get a INIT /INIT-ACK with 
      a) multiple host name
      b) host name with ipv4 and ipv6 addresses( in this case should the packet be discarded or or ignore ipv4/ipv6 and take up host name)

3. In case retransmission timer  times out (say dur ROTO isT secs), do we need to tramist all the earliest outstanding TSNs to that dest addresee.. 
   OR only those, which was tranmissted exaclty T secs earlier?
 for e.g: if tranmit TSN 13 at T1 time, TSN14 at T2 secs. SO at T1 i might at started a timer( that being the first one). if that times out
 do i ned to transmit both TSN13 and TSN14 (or just TSN13)..

Thanks In Advance,
Mohd. Ashraf

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