Smart Technologies SMART Meeting Pro 3.1 - Manual (Page 53)

N O T E
By default, the ManageSrvRecord.ps1 uses a time to live (TTL) value of 86400 (24 hours). This
means that any DNS service that queries this SRV record caches the record for 24 hours. This
includes the DNS component that runs on every desktop computer. If you’re planning to move
Remote Ink service to a different computer and are using a non-zero TTL for the SRV record, the
SRV record must be removed 48 hours before Remote Ink service is moved. The SRV record must
then be replaced by a record with a 0 TTL value as part of the command used to add an SRV record.
This procedure gives each Remote Ink client application time to clear its DNS cache. Alternatively,
if you use a TTL of 0 you don’t have to complete these actions.
If a new 0 TTL value isn’t used for the SRV record, computers hosting Remote Ink client that still
have the old invalid SRV record in cache don’t see the computer hosting Remote Ink service in its
new location (see Checking whether a computer can see an SRV record below for information on
determining which SRV record a computer sees). A computer’s DNS cache can be cleared
manually using the ipconfig /flushdns command.
Checking whether a computer can see an SRV record
To check whether a computer can see an SRV record, use the nslookup command:
C:\> nslookup -type=SRV _smartremoteink._tcp.example.local
Optionally, on the computer where Remote Ink service is installed, use the following command:
powershell.exe -noexit “C:\Program Files\SMART Technologies\Remote Ink
Service\Tools”\ManageSrvRecord.ps1 –query -nameserver dc1 -zone
example.local
Whenever Remote Ink client connects to Remote Ink service, an entry is made in the Remote Ink
software event log on the computer hosting Remote Ink client. This connection information could be
useful in troubleshooting issues.
For example, the following log entry shows that Remote Ink client discovered the Remote Ink service
by looking up its DNS SRV record:
E X A M P L E
Discovered service net.tcp://ink.example.local:35706/RemoteInk via SRV
C H A P T E R 5
Configuring Remote Ink software
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