Listeners
The group LU 6.2 and TCP/IP listeners listen on an address that is logically
connected to the generic address.
For the LU 6.2 listener, the specified LUGROUP is mapped to the VTAM(R) generic resource
associated with the queue-sharing group. For an example of setting up this
technology, see Table 26 .
For the TCP/IP listener, the specifed port has three mutually
exclusive means of being connected to the generic address:
- In the case of a front-end router such as the IBM(R) Network dispatcher (see Network Dispatcher User's Guide, GC31-8496-03), inbound connect
requests are forwarded from the router to the members of the queue-sharing
group.
- In the case of TCP/IP WLM/DNS, each listener registers as being part of
the WLM group. This is a registration type model, similar to the VTAM generic resource
for LU 6.2. For an example of setting up this technology, see Using WLM/DNS.
WLM/DNS only maps hostname and does not map port numbers. This means that
all the group listeners in a queue-sharing group must use the same port number.
Use the WebSphere(R) MQ command (MQSC) as shown in the following examples:
- In the case of TCP/IP's Sysplex Distributor, each listener that
is running and is listening on a particular address that is set up as a Distributed
DVIPA will be allocated a proportion of the incoming requests. For an example
of setting up this technology, see Using Sysplex Distributor