Following issue has occurred at the time of BCS configuration.
Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.
To fix this issue use the following steps:
Next run the following shell script with admin previllege:
$bdc = Get-SPServiceApplication | where {$_ -match “Business Data Connectivity”};
$bdc.RevertToSelfAllowed = $true;
$bdc.Update();
$bdc.RevertToSelfAllowed = $true;
$bdc.Update();
Ref: http://niranjanrao.wordpress.com/2012/01/12/bcs-authentication-issues-login-failed-for-user-nt-authorityanonymous-logon-or-access-denied-by-bcs/
