Allied Telesis AlliedView-EMS 4.0.2 VLAN-Manager - Manual (Page 47)

AlliedView™-EMS 4.0.2 VLAN MANAGER USER’S GUIDE Page 47 of 77
6.7.3 Notes
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The current firmware version does not allow VLAN Manager to distinguish between
Protected VLANs, Mac-based VLANs and standard Port-based VLANs. As a result,
VLAN Manager will display and treat Protected VLANs and Mac-based VLANs as if
they were standard Port-based VLANs. Furthermore, modifying a Protected VLAN
or a Mac-based VLAN will convert that VLAN into a standard Port-based VLAN.
•
An uplink port must be specified to change the VLAN Mode to "Multiple VLAN"
or to "802.1Q Multiple VLAN". Specifying an incorrect port as the uplink port
will cause VLAN Manager to lose connection with the device without any warning.
Exercise caution.
•
The current firmware version does not allow the Default VLAN to be modified.
As a result, all VLAN Manager operations involving the Default VLAN will fail.
•
For 20-character VLAN Names entered via telnet, only the first 19 characters
are registered in VLAN Manager.
•
AT-8550xx : Changing the VLAN Mode parameter setting from '802.1Q Multiple
VLAN' to a different mode may result in the error message: "Unable to
communicate. Confirm SNMP settings or login, and if the network is functional."
However, VLAN Mode is still set to the new mode successfully. To prevent this
error message from reappearing, go to File -> Properties and increase the Retry
Timeout value.
•
For the VLAN Name parameter, the current firmware version allows up to 19
characters to be entered via SNMP and up to 20 characters via telnet. Since VLAN
Manager is an SNMP-based application, the 19-character limit will apply to all
operations involving VLAN Name.
•
AT-8550xx : The current firmware version does not allow VLAN Manager to
perform Add VLAN, Modify VLAN and Import VLAN operations that involve ports
33 to 50. Attempting to perform such operations will result in the error message:
"An error occurred during the operation. Error: Wrong value."
•
As a general rule, no two VLANs can have the same name. However, using an
SNMPv3 account, adding a VLAN using a name that is already being used by another
VLAN that has been excluded from the user account's view will be allowed. Once
added, this VLAN will have a status of "not in service" and the only operation that
can be performed on it will be Delete VLAN.
•
Changing the VLAN Mode parameter setting using the currently set VLAN Mode
will result in the error message: "Error: Commit Failed."
•
During Restart operations, VLAN Manager may encounter a timeout error and
display the message: "Unable to communicate. Confirm SNMP settings or login,
and if the network is functional." To prevent this error message from reappearing,
go to File -> Properties and increase the Retry Timeout value.