Canon iR3245 Network Manual page 232

Remedy
Cause 3
Remedy
Cause 4
Remedy
7
7-4 Network Connection Problems and Remedies
Set <Use SNMP v. 1> and [Enable Dedicated Port Settings] to 'On'. (See
"Communication Environment Setup(p.2-13).")
The SNMP community name does not match.
If you use an SNMP community name different from the one stored in
the machine to access the machine from a utility, the utility will not detect
the machine. In this case, check the SNMP community name. (See
"Communication Environment Setup(p.2-13).")
Invalid cache data is remaining.
If the Remote UI does not start properly and an error message is
displayed on your Web browser, delete the cache files.