I am a little confused on the proper fstab entry for a samba share in Ubuntu 12.04

• I can get the drive to mount manually by using:

  sudo mount -t cifs //192.168.2.2/raid_drive /mnt/homeserver -o username=jon,password=password
  

• So I tried putting this in fstab:

  //192.168.2.2/raid_drive /mnt/homeserver cifs username=jon,password=password,iocharset=utf8,mode=0777,dir_mode=07??77 0 0
  

• Which gives me this error in syslog:

  kernel: [ 2217.925354] CIFS: Unknown mount option mode
  kernel: [ 2217.936345] CIFS VFS: default security mechanism requested.  The default security mechanism will be upgraded from ntlm to ntlmv2 in kernel release 3.3
  

• This guide says to use smbfs although I believe smbfs is deprecated?

What is a common fstab configuration for a samba share in Ubuntu 12.04?

EDIT:

Using the accepted answer below I was initially getting this error message (from dmesg):

[   45.520883] CIFS VFS: Error connecting to socket. Aborting operation
[   45.520990] CIFS VFS: cifs_mount failed w/return code = -115

although it turns out this was due to network connectivity issues, and not related to improper fstab entry.