
Customizing DLSw Services
304233-A Rev. 00
4-25
Local Bay Networks routers receive frames that contain information about the
DLSw peer IP address of each remote system that uses DLSw services. This
information is learned from broadcast frames (TESTs, XIDs, and NetBIOS)
generated by the remote endstations or applications. The router stores this
information in separate NetBIOS and MAC caches.
The router uses the learned IP address to locally specify the DLSw peer that can
reach the desired endstation. The cache is not used for forwarding traffic during
the first LLC2 session, but will be used in new sessions with that endstation.
You can set a timer value that determines when NetBIOS or MAC cache entries
are removed from the router. The timer parameters are NetBIOS Cache Age and
MAC Cache Age. When the cached entry goes unused for the specified cache age
time, or becomes unreachable to new queries, it is removed from the cache and
subsequent frames are broadcast to all configured peers.
The router refreshes a cache entry when DLSw services establish a connection to
the NetBIOS or SNA system associated with that entry. The router resets the
appropriate Cache Age timer to its maximum wait interval.
To set the NetBIOS Cache Age or MAC Cache Age timers, complete the
following tasks:
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose
Protocols
.
The Protocols menu opens.
2. Choose
DLSw
. The DLSw menu opens.
3. Choose
Advanced
. The Edit DLSw Global Parameters
window opens.
4. Set the following parameters:
• NetBIOS Cache Age
• MAC Cache Age
Click on
Help
or see the parameter
descriptions beginning on page A-17.
5. Click on
OK
. The Configuration Manager window
opens.
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