vacmViewTreeFamilyTable with default VACM model

hi,
	net-snmp 5.3.0.1

	snmpd.conf:
		rocommunity	nssro

i snmpwalk the vacmViewTreeFamilyTable, as the following: 

[root@localhost leiy]# snmpwalk -v 2c -c nssro localhost snmpVacmMIB | grep vacmView
SNMP-VIEW-BASED-ACM-MIB::vacmViewSpinLock.0 = INTEGER: 0
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyMask."_all_".1.0 = ""
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyMask."_all_".1.1 = ""
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyMask."_all_".1.2 = ""
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyMask."_none_".1.0 = ""
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyMask."_none_".1.1 = ""
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyMask."_none_".1.2 = ""
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyType."_all_".1.0 = INTEGER: included(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyType."_all_".1.1 = INTEGER: included(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyType."_all_".1.2 = INTEGER: included(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyType."_none_".1.0 = INTEGER: excluded(2)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyType."_none_".1.1 = INTEGER: excluded(2)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyType."_none_".1.2 = INTEGER: excluded(2)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStorageType."_all_".1.0 = INTEGER: permanent(4)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStorageType."_all_".1.1 = INTEGER: permanent(4)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStorageType."_all_".1.2 = INTEGER: permanent(4)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStorageType."_none_".1.0 = INTEGER: permanent(4)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStorageType."_none_".1.1 = INTEGER: permanent(4)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStorageType."_none_".1.2 = INTEGER: permanent(4)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStatus."_all_".1.0 = INTEGER: active(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStatus."_all_".1.1 = INTEGER: active(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStatus."_all_".1.2 = INTEGER: active(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStatus."_none_".1.0 = INTEGER: active(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStatus."_none_".1.1 = INTEGER: active(1)
SNMP-VIEW-BASED-ACM-MIB::vacmViewTreeFamilyStatus."_none_".1.2 = INTEGER: active(1)

i translate these to the following texts using the snmpd.conf directive:
//	_all_	included	0	
//	_all_	included	1		
//	_all_	included	2		
//	_none_	excluded	0		
//	_none_	excluded	1	
//	_none_	excluded	2	

are there any specifial meaning?

the the default VACM model part of snmpd.conf(5) in  net-snmp-5.1.2  release
are deleted along with the succedent release.  it says:

       Default VACM model
              The default configuration of the agent, as shipped, is functionally
              equivalent to the following entries:
              com2sec   public    default   public
              group     public    v1   public
              group     public    v2c  public
              group     public    usm  public
              view      all  included  .1
              access    public    ""   any  noauth    exact     all  none none

are there any good reason about this evolvement along with the net-snmp release?
 

 				
--------------
Leo Lei
2006-09-20



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