Re: JMIB Example (with logs)

["Phil Wang" <pywang@nortelnetworks.com>]

Hi Bryan,

I use the version 4.1.1 on Linux. Moreover, my outputs running the MIB
example and snmpwalk show only ipRouteMetrics1. "ipRouteMetrics2" is
supposed to be outputed only if it exists. 

I am not sure what the exact reason is, can you post the error message?
I attach the log of the MIB example for your reference.

Regards,
Phil

> "Ha, Bryan [HAL02:HG00:EXCH]" wrote:
> 
> Hi Phil,
> 
> I have installed the ucd-snmp 4.1.2 on a Solaris Sparc machine and I
> have encountered the following exception when I loads the JMIB
> Example. It throws an ClassCastException exception when it tries to
> access its Routing Table. It looks very likely that it fails when it
> tries to access the parameter ipRouteMetrics2 under the ipRouteEntry
> subtree.
> 
> I have done a snmpwalk but only ipRouteMetrics1 exists. Are you using
> ucd-snmp 4.1.2 ? I have read from the ucd-snmp FAQ that certain
> parameters are missed out if they cannot be determined (contrary to
> SNMP specification) but ipRuteMetrics2/3/4 are not among the published
> attributes.
> 
> Any comments much appreciated.
> 
> Bryan
> 
>      -----Original Message-----
>      From:   Wang, Phil [CAR:FD70:EXCH]
>      Sent:   Thursday, October 12, 2000 2:23 PM
>      To:     Ha, Bryan [HAL02:HG00:EXCH]
>      Cc:     open_networks@openetlab.org;
>      active_networks@openetlab.org
>      Subject:        Re: Exception when calling setName on SystemGroup
> 
>      I used the UCD one, which is available from
>      "http://ucd-snmp.ucdavis.edu".
> 
>      Phil
> 
>      > "Ha, Bryan [HAL02:HG00:EXCH]" wrote:
>      >
>      > Thanks a lot for your replies. I will see what I can do on NT
>      as well.
>      >
>      > Which SNMP daemon are you using on LINUX ?
>      >
>      > Many thanks,
>      >
>      > Bryan
>      >
>      >      -----Original Message-----
>      >      From:   Wang, Phil  [SMTP:pywang@americasm01.nt.com]
>      >      Sent:   Wednesday, October 11, 2000 7:31 PM
>      >      To:     Duncan, Robert
>      >      Cc:     Ha, Bryan ; open_networks@openetlab.org;
>      >      active_networks@openetlab.org; Duncan, Robert
>      >      Subject:        Re: Exception when calling setName on
>      SystemGroup
>      >
>      >      For the time being, we can the two default communities for
> 
>      >      different
>      >      SNMP operations, the "public" community is for read-only
>      (i.e.,
>      >      SNMPGET)
>      >      and the "private" one for write (i.e., SNMPSET). They
>      share the
>      >      same mib
>      >      view (with read or write permissions).
>      >
>      >      I've made the above two communities working on Linux.
>      However,
>      >      "snmpd.conf" is a bit tricky at the beginning. -:)
>      >
>      >      Phil
>      >
>      >      Rob Duncan wrote:
>      >      >
>      >      > "Wang, Phil " <pywang@americasm01.nt.com> writes:
>      >      >
>      >      > > > 2. As I read from the SNMP spec, SNMP requests
>      should
>      >      indicate the
>      >      > > > community name it is using, how is that achieved in
>      the API
>      >      ? Where
>      >      > > > should I set the community name to be for
>      authentication
>      >      purpose ?
>      >      >
>      >      > > Two communities are used internally by
>      "jmibmap_loopback",
>      >      they are
>      >      > > "public" and "private". If you want to use your own
>      >      communities, you'd
>      >      > > re-write the a new JMIB mapper.
>      >      > >
>      >      > > On the other hand, these Java mibs (e.g., jmib_mib2
>      for MIB
>      >      II) are
>      >      > > automatically generated from their mib texts which do
>      not
>      >      contain a
>      >      > > community name. So, the JMIB APIs do not support
>      setting a
>      >      community
>      >      > > name. Rob, it that right?
>      >      >
>      >      > Yes.  This is a bug in our APIs.  Right now the
>      community
>      >      strings are
>      >      > hardwired into the Loopback service implementation.
>      I'll fix
>      >      this for
>      >      > the next release by adding an API for this into the
>      Loopback
>      >      service,
>      >      > and probably also by setting some configuration
>      variables
>      >      somewhere.
>      >      >
>      >      > R.

-- 
Phil Yonghui Wang, Ph.D.
Principal Network Architect, Nortel Networks Technology Center
Web: www.openetlab.org        Email: pywang@nortelnetworks.com
Tel: (613) 765-6607 (ESN 395) Fax:   (613) 765-4962 (ESN 395)

mib_example.log