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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

3460.0. "hub manager ifoperstatus and ifadminstatus not as expected" by TOOPCS::SELLES () Tue Apr 16 1996 16:28

a customer is trying to setup SNMP scripts to monitor the in-band and 
out-of-band interfaces 

he has some concerns the way the MIB-II variables are implemented by the 
dechub900 manager ( latest 4.1 release ) :

from the setup console , he did setup slot 2 and slot 3 as in-band and also he 
did setup the obm port ; from console , 
the dechub900 status screen indicates that 
OBM is  defined 
slot 2 is Not Present 
slot 3 is Active 

the OBM port is not physically connected and slot 2 module has been removed

now with a mib browser , he looks at the ifoperstatus and ifadminstatus 
and ends up with the following results :

interface 	ifoperstatus	ifadminstatus
1  (OBM)             up		    up
2		   down 	    down 
3   (slot 2 )	   down 	    down
4   (slot 3)	   down             up
5		   down             down 

and 6 7 8 9 being  down             down


the customer argues that ifoperstatus should reflect the "usable" state 
of the interface so we should have : 
1  down 
3  down
4  up

and ifadminstatus the "configured" state and we should have :
1   up
3   up
4   up



what is the expected behaviour of these variables and how can i advise this 
customer setup its scripts for correct status report ? 

thanks for your help
T.RTitleUserPersonal
Name		DateLines
3460.1Has problems, but here is how it works.NETCAD::D_BRUGNOLIWed Apr 17 1996 12:5335
    According to mib-ii, ifOperStatus is the current operational state of
    the interface, ifAdminStatus is the desired state of the interface.
    
    In version 4.1 of DEChub900, the ifTable is only updated at init time. 
    This problem is known and scheduled to be addressed in the next
    release.
    
    When you assign a particular slot as ip services and a module is in
    fact in that slot, the desired state of the interface, ifAdminStatus
    becomes "up" meaning that the interface is ready to pass packets.  If
    no module is present in the slot that you assigned as ip services, the
    ifAdminStatus will indicate that the interface is "down" meaning that
    the interface is not ready to pass packets.  If a device is present but
    not capable of providing ip services then the ifAdminStatus and 
    ifOperStatus will both indicate "down" not ready to pass packets.  In 
    the DEChub900 console for that interface you will see "not configured".
    
    The mib object ifOperStatus is not updated, this problem is known and
    will be addressed.
    
    The expected behavior of ifOperStatus in the case of an interface that
    is assigned to provide ip services for the hub, is that if a device is
    in the slot and is operational then ifOperStatus will indicate the
    current operational state is "up" meaning ready to pass packets.  If a
    device is not present in the slot that is assigned to provide ip
    services for the hub then the current state of the interface is "down"
    meaning that it is not ready to pass packets.
    
    As for the OBM, we have no way to tell if the OBM is connected.  We
    know that the OBM will receive packets and if it is connected and 
    assigned an ip address then packets will be transmitted otherwise
    they will be dropped.  So the OBM is always "up" for both the
    ifAdminStatus and ifOperStatus.
    
    Denise
3460.2if MIB objects in the hubNETCAD::MILLBRANDTanswer mamWed Apr 17 1996 13:4948
-.1 is correct in saying that the current MAM implementations
do not utilize ifAdminStatus and ifOperStatus.  However, -.1
does not exactly what we have implemented for the next (V5) 
release.  A better summary would be:

If an IP address has been assigned, ifAdminStatus is Up.
If the interface is operational, ifOperStatus is Up.

The only caveat would be that for the OBM interface, assigning
an address will cause both ifAdminStatus and ifOperStatus to
go Up.

Note that the MAM assigns if interface indices as follows:

ifIndex 1 - OBM interface
ifIndex 2 - In-band IP Service interface via module in Hub Slot 1
ifIndex 3 - "                  "                       Hub Slot 2
...
ifIndex 9 - In-band IP Service interface via module in Hub Slot 8


Here are the details for V5 IPS configuration:

When a user configures in-band IP Services, the ifAdminStatus for the
MAM's interface to the IP server module is set to Up, and the 
ifOperStatus is set to Down.
  
The MAM then begins to configure the IP server.  If this operation 
is successful, ifOperStatus for that interface is set to Up.
The state of IP Services for each IP server module is displayed
in Show Current Settings, under "Other Info".  If the ifOperStatus
is not up, the reason is derived from the state of the module.

ifAdminStatus  Server Module State  ifOperStatus  Display 
------------------------------------------------------------------
Down or Test   any                  any           [none]
Up             slot empty           any           Not Present
Up             not responding       any           Not Present
Up             not up               any           Not Active
Up             up, no HLAP support  any           Not Supported
Up             up, no IPS support   any           Not Supported
Up             up                   Down or Test  Not Active
Up             up                   Up            Active
Up             IPS addr duplicate   Up            Duplicate Addrs



	- Dotsie
3460.3thanks for the detailed explanationsTOOPCS::SELLESWed Apr 17 1996 16:170