Re: Additions to CMU's proposed DHCP MIB

[Milt Roselinsky <[e-mail]>]

At 1:37 PM 8/16/96, Hibbs, R Barr (rbhibbs) wrote:
>Erikas provided a copy of Carnegie-Mellon's enterprise MIB for SNMP control
>of a DHCP server last week.  After examining CMU's  work, I believe it could
>be the basis for a general command and control facility for DHCP servers.

I agree.  The CMU MIB is a good start.

To follow current conventions,  counter values need to be defined as per
the SMIv2 in RFC1902.  We need to define if we want Counter32 or Counter64
values.

>DHCP performance statistics
>     1.  Inter-arrival time
>          DHCPMinArrival  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }
>
>          DHCPMaxArrival  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    ::= { stats ? }
>
>          Mean inter-arrival time = sum of inter-arrival times / number of
>received messages
>          DHCPSumArrival  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }
>
>          Variance of mean inter-arrival time = sum of squares of
>inter-arrival time / number of received messages
>          DHCPSumSquaresArival  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }
>

I'm a bit concerned about the performance statistics you've defined.  They
seem to be interesting values, but I'm curious what a network administrator
will do with the information?  Please include a detailed DESCRIPTION
section for each of the values.


>     2.  Response time
>          DHCPMinResponse  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }
>
>          DHCPMaxResponse  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }
>
>          Mean response time = sum of response times / number of received
>messages
>          DHCPSumResponse  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }
>
>          Variance of mean response time = sum of squares of response time /
>number of received messages
>          DHCPSumSquaresResponse  OBJECT-TYPE
>                    SYNTAX  INTEGER
>                    ACCESS  read-only
>                    STATUS  optional
>                    :: = { stats ? }

This section is very unclear.  Is this time calculated from reciept of the
query?  My question from above regarding the value of this to a net admin
is repeated here.


>
>Barr Hibbs
>Pacific Bell
>[phone]
>[e-mail]

>From information in this and previous emails, it sounds like you've built
an interesting server.  Is Pac Bell willing to release it for others to
use?

Milt Roselinsky                                 [e-mail]