|  
               
            Snmp login with v1,v2c, 
              V3 
            There is 3 version of snmp : 
            V1 : you need a community to log in 
              : 
                  <script> -C <community> 
            V2c : you need a community to log in 
              : 
                  <script> -C <community> 
              -2 
            V3 : you need a login and password. 
              You can either encrypt data (AuthPriv) or not (AuthNoPriv). Authentication 
              is encrypted in any case : NoAuthNoPriv is not supported, and is 
              useless anyway : use snmpv1 in this case. 
            AuthNoPriv : Data is sent in clear, 
              login and password are encrypted. 
              With default protocol (md5) : 
                  <script> -l login -x passwd  
              With sha protocol :  
                  <script> -l login -x passwd -L 
              sha 
            AuthPriv : Data, login and password 
              are encrypted 
              With default protocol (md5,des) : 
                  <script> -l login -x passwd -X 
              privpasswd 
              With md5 for logging and aes for encrypting :  
                  <script> -l login -x passwd -X 
              privpasswd -L md5,aes 
              
             
            MIB-2 
             
            Interface : 
            1.3.6.1.2.1.2.2.1 : interface table 
             
            
               
                | OID | 
                Type  | 
                Description | 
               
               
                | .1.X | 
                Int | 
                Index | 
               
               
                | .2.X | 
                string | 
                Description | 
               
               
                | .3.X | 
                ?? | 
                Type : 6=ethernet,23=ppp, 24=loopback, 27=atm | 
               
               
                | .4.X | 
                  | 
                MTU | 
               
               
                | .5.X | 
                  | 
                Speed | 
               
               
                | .6.X | 
                  | 
                Phys address | 
               
               
                | .7.X | 
                  | 
                Administrative status (1=>'UP',2=>'DOWN',3=>'TESTING') | 
               
               
                | .8.X | 
                  | 
                Operational status (cf admin status) | 
               
               
                | .9.X | 
                Counter | 
                Input Octets | 
               
               
                | .13.X | 
                Counter | 
                Output Octets | 
               
             
             Storages : 
            1.3.6.1.2.1.25.2.2.0 : system memory 
              1.3.6.1.2.1.25.2.3.1 : storage table 
             
            
               
                | OID | 
                Type  | 
                Description | 
               
               
                | .1.X | 
                Int | 
                Index | 
               
               
                | .2.X | 
                OID | 
                Type : points on OID | 
               
               
                | .3.X | 
                string | 
                Description | 
               
               
                | .4.X | 
                Int | 
                Allocation unit | 
               
               
                | .5.X | 
                Int | 
                Size | 
               
               
                | .6.X | 
                Int | 
                Used | 
               
               
                | .7.X | 
                Counter32 | 
                Allocation failures | 
               
             
            CPU 
               
              1.3.6.1.2.1.25.3.3.1 : CPU table 
             
            
               
                | OID | 
                Type  | 
                Description | 
               
               
                | .X.4 | 
                OID | 
                Type (hrProcessorFrwID) | 
               
               
                | .X.5 | 
                Int | 
                %used on 1 min (hrProcessorLoad) | 
               
             
               
           |