[j-nsp] ERX Mibs Question

[Aviva Garrett]

Hi Jeronimo,

Here's the answer from the ERX engineering group:

: We are sorry, but there are no SNMP objects that provide the count of
: bits in/out on the ERX.  
: We use the IETF standard IF-MIB (RFC 2863) to count interface octets
: in/out.  
: There are 8 bits to an octet, so you can multiple the octet counts by 8
: to get the number of bits.
: The counters you want to look at are:
:    ifInOctets OBJECT-TYPE
:        SYNTAX      Counter32
:        MAX-ACCESS  read-only
:        STATUS      current
:        DESCRIPTION
:                "The total number of octets received on the interface,
:                including framing characters.
: 
:                Discontinuities in the value of this counter can occur
:                at re-initialization of the management system, and at
:                other times as indicated by the value of
:                ifCounterDiscontinuityTime."
:        ::= { ifEntry 10 }
: 
:    ifOutOctets OBJECT-TYPE
:        SYNTAX      Counter32
:        MAX-ACCESS  read-only
:        STATUS      current
:        DESCRIPTION
:                "The total number of octets transmitted out of the
:                interface, including framing characters.
: 
:                Discontinuities in the value of this counter can occur
:                at re-initialization of the management system, and at
:                other times as indicated by the value of
:                ifCounterDiscontinuityTime."
:        ::= { ifEntry 16 }
: 
: As for discarded bits, that is a little more difficult, since those
: IF-MIB counters are in terms of packets and not octets.
: Since on some interface types the number of octets in a packet is
: variable, there really is no way to tell how many bits are discarded.
: The IF-MIB objects are:
:    ifInDiscards OBJECT-TYPE
:        SYNTAX      Counter32
:        MAX-ACCESS  read-only
:        STATUS      current
:        DESCRIPTION
:                "The number of inbound packets which were chosen to be
:                discarded even though no errors had been detected to
:                prevent their being deliverable to a higher-layer
:                protocol.  One possible reason for discarding such a
:                packet could be to free up buffer space.
: 
:                Discontinuities in the value of this counter can occur
:                at re-initialization of the management system, and at
:                other times as indicated by the value of
:                ifCounterDiscontinuityTime."
:        ::= { ifEntry 13 }
: 
:    ifOutDiscards OBJECT-TYPE
:        SYNTAX      Counter32
:        MAX-ACCESS  read-only
:        STATUS      current
:        DESCRIPTION
:                "The number of outbound packets which were chosen to
:                be discarded even though no errors had been detected
:                to prevent their being transmitted.  One possible
:                reason for discarding such a packet could be to free
:                up buffer space.
: 
:                Discontinuities in the value of this counter can occur
:                at re-initialization of the management system, and at
:                other times as indicated by the value of
:                ifCounterDiscontinuityTime."
:        ::= { ifEntry 19 }
: 
: You may want to reconsider what you are trying to use this information
: for and come up with a way to use the standard counters.


Thanks,
..Aviva