Chapter 3. Operating NetView FTP V2.2.1 MVS - IBM

7. After the queue handler finds a request that it can pass to the server, it checks
whether the request specifies the LU name of a single server or the name of a
server group. If the request specifies the name of a server group, the queue
handler retrieves the following information from the server group table and
inserts it into the request:
� The LU names of the first eight servers in the server group that have the
running mode specified in the request.
� The number of servers in the group whose LU names were not inserted.
Note: Point 7 does not apply to OSI file transfers.
8. The queue handler passes the request to the server. The request’s status is
changed to active.
Transferring a File
The following describes how a file is transferred using an SNA server and an OSI
server.
SNA Server
A file is transferred by an SNA server as follows:
1. After the local server obtains a request from the queue handler, it attempts to
allocate a conversation with the first server listed in the server group specified
in the request.
If an LU name is specified, the server tries to allocate a conversation only with
the server represented by this LU name. (If the LU name of a single server
was specified, then this server is the only one listed in the request.)
Note that for NetView FTP/2 and NetView FTP AIX the server group must not
contain more than one LU name, as a group of NetView FTP Client programs
is represented by the LU name of the NetView FTP Server workstation to which
they are attached.
2. If the server at the remote location (the remote server) accepts the conversation
parameters, the conversation is established and the server proceeds with
step 3.
If the remote server does not accept the conversation parameters, the local
server tries to establish a conversation with the next server listed in the server
group specified in the request. It continues trying until it either succeeds in
establishing a conversation or has tried to establish a conversation with all the
servers listed in the server group specified in the request.
If there are more LUs in the server group than the ones already tried, the
server tells the queue handler to retrieve the names of up to eight LUs. The
server repeats this process until it either succeeds in establishing a conversation
or has tried all the LU names associated with the server group.
After it has tried all the servers in the group without success, the local server
notifies the queue handler and tells it to place the request back into the queue,
leave it in waiting status, and set its not-before time to the current time plus the
time specified in the server’s REQDELAY initialization parameter. This parameter
is described in “Specifying Values for the Server Initialization Parameters”
on page 113.
8 NetView FTP V2 MVS Installation, Operation, and Administration