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Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

2327.0. "ELMS vs ELM_AM vs SNMP_AM" by ZTOIS1::VISTA (Renato VISTA, SIS Strasbourg, France) Wed Feb 12 1992 10:29

    
    I'm trying to manage DECbridge 500 (software version 3.0, SNMP
    manageable) via DECmcc/VMS V1.1 on a mVAX 3800 with SNMP V1.1 + DEC 
    private MIB, testing also DECelm AM V1.0 and DEC ELMS V1.1.
    
    During the comparison phase of different ways of management, 
    I've met the following problem : (comments beginning with > in the 
    following FCL captured session...)
    
    
    
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
%MCC-I-SAVEHEADER, DECmcc output region Wed Feb 12 16:02:32 1992
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
    
    
    
	>First, I've examined the following data throught SNMP AM...
                                                                
    
    
show snmp SXD500 DEC ESYSCHAR ESYSTRAPADDRESSTABLE * ALL ATTRIBUTES

SNMP SXD500 dec esysChar esysTrapAddressTable *
AT 12-FEB-1992 15:59:57 All Attributes

                        esysTrapAddress = -- Attribute Not Available
    
    
    	>Because no data is available, I added a TRAP ADDRESS with the
    ELMS command : 
    
    		ELMS>ADD SXD500 TRAP ADDRESS 16.188.48.9
    
    	>Then, I did an new examination...
    

show snmp SXD500 DEC ESYSCHAR ESYSTRAPADDRESSTABLE * ALL ATTRIBUTES

SNMP SXD500 dec esysChar esysTrapAddressTable 16.188.48.9
AT 12-FEB-1992 16:00:15 All Attributes

                        esysTrapAddress = 16.188.48.9
    
    
    	>The new TRAP ADDRESS was written ; then, I had a look on
    the same bridge BUT via ELM AM...
    

show bridge .bridge_node.SXD500 TRAP ADDRESS TABLE

BRIDGE STRAS5_NS:.bridge_node.SXD500
AT 12-FEB-1992 16:00:37 Characteristics

                     Trap Address Table = { 16.188.48.9 }


    >SO far, all seems to be OK.
    
    >Then, I've tried to write an new TRAP address via SNMP AM...
    >The following first command failed...
    
    
set snmp SXD500 DEC ESYSCHAR ESYSTRAPADDRESSTABLE * esysTrapAddress =
16.188.48.5
%MCC-E-NOTFOUND,  unsupported combination of verb, entity, partition
    
    
    >The second one too...

set snmp SXD500 DEC ESYSCHAR ESYSTRAPADDRESSTABLE 16.188.48.5 esysTrapAddress =
16.188.48.5
%MCC-E-NOTFOUND,  unsupported combination of verb, entity, partition

    
    >And, if I try to write a new trap address via ELM AM, I get the
    following message...
    
    
set bridge .bridge_node.SXD500 Trap Address = 16.188.48.5

BRIDGE STRAS5_NS:.bridge_node.SXD500
AT 12-FEB-1992 16:02:18 Characteristics

Modification completed successfully.
                           Trap Address = -- No Such Attribute


    
    Does anybody see the nature of problem ? Is it simply a problem of SNMP
    syntax ? Note that the problem also exists throught the DECmcc ICONIC
    MAP...
    
    Does the version of ELM AM (ie v1.0) match with the DECbridge 500
    software (ie 3.0) ? The problem occurs also throught the DECmcc ICONIC
    MAP...
    
    
    Thank you for you help !
    
    Renato
    
    
       
    
T.RTitleUserPersonal
Name
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2327.1TOOK::R_SPENCENets don't fail me now...Wed Feb 12 1992 11:264
    If I got this wrong, someone please correct me but I believe that
    the first SNMP agents for the bridges did not support SET.
    
    s/rob
2327.2QUIVER::CHILDSEd ChildsWed Feb 12 1992 15:0421
| I'm trying to manage DECbridge 500 (software version 3.0, SNMP
| manageable)

    V3.0 of the bridge's software will not allow SNMP sets.  And I've heard
    that there is no support planned for SNMP sets on the DECbridge 5xx
    series.

| >And, if I try to write a new trap address via ELM AM, I get the
| following message...

| set bridge .bridge_node.SXD500 Trap Address = 16.188.48.5

    This is the wrong command.  See the Bridge Access Module Use manual,
    the section called Setting IP Address Information.  The commands that I
    think you are looking for are:

    MCC> ADD BRIDGE <bridge-id> TRAP ADDRESS=n.n.n.n
    MCC> REMOVE BRIDGE <bridge-id> TRAP ADDRESS=n.n.n.n

    The error message you are getting isn't very good.  I'll see if there
    is a better way of handling this error.
2327.3SNMP restriction and ELM AM syntax OKZTOIS1::VISTARenato VISTA, SIS Strasbourg, FranceThu Feb 13 1992 04:5430
    
    
    Hi and thank you for your answers !
    
    Yes, Rob, you're right concerning the non-ability to do a SET directive
    on SNMP manageable DECbridge500/600 and DECconcentrator500/600. I've
    found also the answer in the release notes of the new software
    (respectively V3.0 and V3.0B) where it is written that "SNMP GET
    requests are supported throught the community public" (ie READ-ONLY). 
    The answer should be able to be found easily in that document (!), 
    but, as I was working directly with the ASN1 DEC_MIBDEF.TXT file from 
    the SNMP V1.1 kit where the target variable (ie esysTrapAddress) has 
    an access mode of READ-WRITE !!! So, you understand my confusion... 
    
    Note furthermore that I worked previously on CHIPcom 5100M-MGT and 
    5102B-EE modules which are both SNMP manageable (ie READ-WRITE), so
    it's new for me to discover Digital explicite restrictions about the
    SNMP way of management...
    
    
    Yes, Ed, you're right too !!! Because of my trouble with the previous
    problem, I had'nt noticed that the syntax was explicitly written in the
    Bridge Access Module User Guide (what a poor reader am I !!!!!!). So,
    all is ok now ! 
    
    Thank you for your help !!
    
    Regards,
    Renato
    
2327.4SNMP Sets Allowed Switch ELM_AM attribute ?ZTOIS1::VISTARenato VISTA, SIS Strasbourg, FranceThu Feb 13 1992 05:5846
    
    
    Hi, 
    
    Althought my previous reply .3, I have a question about ELM AM.
    I 've just read in the documentation "Bridge Access Module Use", page
    A-4, the definition of the following attribute :
    
    SNMP Sets Allowed Switch	:	When TRUE, the bridge allows the
    					SET operation via SNMP protocol.
    
    What do you think about that definition and about the way of use that
    atribute ?
    
    Note that the following message occurs (ELM AM V1.0, DECmcc V1.1) when
    trying to do a SET or an ADD commands :
    
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
%MCC-I-SAVEHEADER, DECmcc output region Thu Feb 13 11:52:03 1992
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 



set bridge .bridge_node.sxd500 SNMP Sets Allowed Switch = true

BRIDGE STRAS5_NS:.bridge_node.sxd500
AT 13-FEB-1992 11:51:28 Characteristics

Modification completed successfully.
               SNMP Sets Allowed Switch = -- No Such Attribute

add bridge .bridge_node.sxd500 SNMP Sets Allowed Switch = true
                                           
BRIDGE STRAS5_NS:.bridge_node.sxd500
AT 13-FEB-1992 11:51:32 Characteristics

ADD not supported for this attribute.
               SNMP Sets Allowed Switch = -- Attribute Operation Failure


capture
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
%MCC-I-SAVETRAILER, end of DECmcc output region
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
    
    
2327.5QUIVER::CHILDSEd ChildsThu Feb 13 1992 10:3329
| Althought my previous reply .3, I have a question about ELM AM.
| I 've just read in the documentation "Bridge Access Module Use", page
| A-4, the definition of the following attribute :
|
| SNMP Sets Allowed Switch:  When TRUE, the bridge allows the
|                            SET operation via SNMP protocol.
|
| What do you think about that definition and about the way of use that
| atribute ?

    I think that none of the DECbridge 5xx/6xx models return this
    attribute. :-)  The attribute is defined by the RBMS protocol but it is
    not implemented by any of the bridges, and will not be implemented in
    the future.  From what I know, there will be no more enhancements to
    the RBMS agents for LAN Bridge 100/150/200 or the DECbridge 5xx/6xx
    Series.  It should probably be removed from Appendix A of the Bridge
    Use manual to avoid confusion.

    Unfortunately, setting this attribute to True does not get you SNMP Set
    capabilities.  And again, there will be no SNMP Sets ever for the
    DECbridge 5xx series -- the firmware implementors sit one row away from
    me and I asked them.

| add bridge .bridge_node.sxd500 SNMP Sets Allowed Switch = true

    The ADD command only applies to attributes that are tables.  There are
    exactly two places in the Bridge AM where ADD/REMOVE can be used:  1)
    The Trap Address table, 2) the Non-Translating Protocol table.  These
    are discussed in Chapter 2 of the Bridge Use manual.
2327.6Ok for your explanations...ZTOIS1::VISTARenato VISTA, SIS Strasbourg, FranceThu Feb 13 1992 13:177
    
    Hi Ed,
    
    Thank you for your clear explanations !
    
    Regards,
    Renato