[SNMP4J] Variable Binding maximum size (255 bytes)

[PIPPO IMPELLIZZERI]

---------- Forwarded message ----------
From: PIPPO IMPELLIZZERI <cazzalora at gmail.com>
Date: Apr 12, 2006 2:36 PM
Subject: Re: [SNMP4J] Variable Binding maximum size (255 bytes)
To: Frank Fock <fock at agentpp.com>

 hi Frank, thaks for the quick reply.

this is the code that I used (more or less):
------------------------------------------------------------------------------------
deviceInfoVB = new VariableBinding ( 1,3,6,1,2,1,1,1 );
pdu.add(deviceInfoVB);
pdu.setType(PDU.GETNEXT);
response = snmp.send(pdu, comtarget);
PDU responsePDU = response.getResponse();
------------------------------------------------------------------------------------
and this is the answer from the router (i don't know why the method
.toString of the VariableBinding show hexadecimal data instead of normal
text):

Response PDU is: requestID=428758844, errorStatus=Success(0),
 errorIndex=0, VBS[1.3.6.1.2.1.1.1.0 =
43:69:73:63:6f:20:49:6e:74:65:72:6e:65:74:77:6f:72:6b:20:4f:70:65:72:61:74:69:6e:67:20:53:
79:73:74:65:6d:20:53:6f:66:74:77:61:72:65:20:0d:0a:49:4f:53:20:28:74:6d:29:20:34:35:30:30:

20:53:6f:66:74:77:61:72:65:20:28:43:34:35:30:30:2d:4a:53:35:36:49:2d:4d:29:2c:20:56:65:72:
73:69:6f:6e:20:31:31:2e:33:28:31:31:62:29:54:32:2c:20:20:52:45:4c:45:41:53:45:20:53:4f:46:
54:57:41:52:45:20:28:66:63:31:29:0d:0a:54:41:43:20:53:75:70:70:6f:72:74:3a:20:68:74:74:70:

3a:2f:2f:77:77:77:2e:63:69:73:63:6f:2e:63:6f:6d:2f:74:61:63:0d:0a:43:6f:70:79:72:69:67:68:
74:20:28:63:29:20:31:39:38:36:2d:32:30:30:32:20:62:79:20:63:69:73:63:6f:20:53:79:73:74:65:
6d:73:2c:20:49:6e:63:2e:0d:0a:43:6f:6d:70:69:6c:65:64:20:4d:6f:6e:20:31:31:2d:46:65:62:2d:

30:32:20:32:33:3a:31:35:20:62:79:20:63:63:61

from 43:69:73: ... to  .... 63:63:61 are exactly 255 bytes

the hexadecimal data means:

"Cisco Internetwork Operating System Software
IOS (tm) 4500 Software (C4500-JS56I-M), Version 11.3(11b)T2,  RELEASE
SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Mon 11-Feb-02 23:15 by cca" [broken]

I was also wondering if is there a easy way to "convert" this
hexadecimal data into a String.


thanks
Rey




On 4/12/06, Frank Fock <fock at agentpp.com> wrote:
>
> Hi,
>
> SNMP4J can process PDU up to 64KB by default. Can you post
> the "broken" information you get?
>
> Best regards,
> Frank
>
> PIPPO IMPELLIZZERI wrote:
> >  I was tryng to query a CISCO device to retrieve the IOS version using
> > snmp4j with the
> >  follow VariableBinding  { 1,3,6,1,2,1,1,1}
> >
> >
> >  iso (1) . org (3) . dod (6) . internet (1) . mgmt (2)
> >    |
> >     - -- mib-2 (1)
> >       |
> >        - -- system (1)
> >       |      |
> >       |      | --   sysDescr (1) object Details
> > <http://tools.cisco.com/Support/SNMP/do/BrowseOID.do?local=en&translate=Translate&objectInput=sysDescr
> >
> >
> >  Everything works good, but the response PDU that I receive with a lot
> of
> > information is "broken".
> >  I guess that there is a maximum size for the VariableBinding  inside
> the
> > PDU of 255 bytes.
> >  Is there a way to obtain a PDU response big enough to hold all the
> > information sendend from the router ?
> >
> >
> >  thanks,
> >  Rey
> > _______________________________________________
> > SNMP4J mailing list
> > SNMP4J at agentpp.org
> > http://lists.agentpp.org/mailman/listinfo/snmp4j
>
> --
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>
>