Nortel Networks NN46110-602 - Manual (Page 85)

Chapter 4 Troubleshooting 85
Nortel VPN Router Troubleshooting
The renewal interval governs how often a client must reregister its name with the
WINS server. It begins trying at one-half of the renewal interval. The extinction
interval governs the length of time between when a client name is released and
when it becomes extinct. These intervals are the most important to control when
using dynamic addresses.
There is a trade-off in setting these intervals. If they are set too small, there is too
much additional client registration network activity. If they are set too large,
transient client entries do not time out soon enough. If you also have secondary
WINS servers, make the renewal interval the same on the secondary servers as on
the primary server.
For additional information on setting interval values for a WINS configuration,
see the Microsoft Knowledge Base article Min. and Max. Interval Values for
WINS Configuration available at www://support.microsoft.com/support. A WINS
server that has a heavy CPU load or network load does not perform well. To help
performance:
• Do not run other intensive tasks on the WINS server.
• In the WINS configuration, disable detailed logging.
• If you have primary and secondary WINS servers, assign them a balanced
load.
For hosts that never change IP addresses, you can give static entries in the WINS
database. For example, you can configure the address of the Primary Domain
Controller as static. To do this, you also need a statically reserved DHCP address
for the primary domain controller.
What can you try on the WINS server when it is not working?
You can request that the WINS server clean up its database by going into the
Mappings menu and selecting Initiate Scavenging.
If the database becomes very large, you can compact it by using the jetpack.exe
program in \winnt\system32. Consult the WINS Help before doing this because
the server must be shut down.