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[nv-l] V2 trap - sysUptime encoding

To: "NetView List (E-mail)" <nv-l@lists.tivoli.com>
Subject: [nv-l] V2 trap - sysUptime encoding
From: "Treptow, Craig" <Treptow.Craig@principal.com>
Date: Thu, 6 Mar 2003 13:45:23 -0600
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Thread-topic: V2 trap - sysUptime encoding
This isn't really specific to Netview, but I'm struggling to find the 
information and hope that some kind soul out there can help me out.

Here is an snmpget output with the -d flag:

received 48 bytes from 162.131.0.25 at square2.net.principal.com:
     0:  30 2e 02 01 00 04 08 64 6f 6e 74 77 61 6e 74 a2     0......dontwant.
    16:  1f 02 02 46 85 02 01 00 02 01 00 30 13 30 11 06     ...F.......0.0..
    32:  08 2b 06 01 02 01 01 03 00 43 05 00 84 32 23 6d     .+.......C...2#m

     0:  SEQUENCE (0x30): 46 bytes
     2:    INTEGER VERSION (0x2) 1 bytes: 0
     5:    OCTET STRING COMMUNITY (0x4) 8 bytes: "dontwant"
    15:    GETRESPONSE-PDU (0xa2): 31 bytes
    17:      INTEGER REQUEST-ID (0x2) 2 bytes: 18053
    21:      INTEGER ERROR-STATUS (0x2) 1 bytes: noError(0)
    24:      INTEGER ERROR-INDEX (0x2) 1 bytes: 0
    27:      SEQUENCE (0x30): 19 bytes
    29:        SEQUENCE (0x30): 17 bytes
    31:          OBJECT ID (0x6) 8 bytes: .1.3.6.1.2.1.1.3.0
    41:          TIMETICKS (0x43) 5 bytes: 2217878381


system.sysUpTime.0 : Timeticks: (2217878381) 256 days, 16:46:23.81

0x43 seems to indicate it is timeticks and it will be 5 bytes long.  We are 
having a problem with some devices that are sending v2c traps.  They put 0x02 
at that location, and ethereal says it wasn't a timeticks value that it was 
expecting.  We are theorizing that 0x43 = timeticks and 0x02 = Signed 32-bit 
integer.  

We'd like to know which RFC these encodings are defined in, so we can find out 
what that value means and if the vendor is doing something wrong, of if Netview 
is interpreting a valid trap incorrectly.  I have been scouring RFC's, but 
can't seem to find this detail defined anywhere.

Any help is greatly appreciated.

Thanks!


Craig

A dozen, a gross, and a score,
Plus three times the square root of four,
Divided by seven,
Plus five times eleven,
Equals nine squared plus zero, no more.


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