Proxy Agent subtree parsing

[Frank.Fock____t-online.de]

Anton,

it seems that you have registered the snmpGroup
with  	

mib.add(new snmpGroup());

somewhere. So, you have overlaped regions, since
1.3.6.1.2.1.11 is within 1.3.6.1.2

Best regards,
Frank

soudovtsev at bluewin.ch schrieb:
> Hi Jochen,
> Thank you for your reply.
> I'll answer your questions inline :
> 
> >Hi,
> >
> >> I have a little problem using a proxy agent, not all 
> subtrees are parsed 
> >> when I execute an snmpwalk command. What I've done is 
> the following : 
> 
> >>
> >> - Create a Proxy Agent using MibProxy object (so it's 
> an old style). 
> 
> >> - For each proxied agent I specify a subtree he 
> exposes, the community 
> >and
> >> the ip address.
> >
> >did you specify overlaped subtrees or does your agent++ 
> mib have own 
> >objects within the subtrees?
> 
> Nope, I haven't any overlaped subtrees defined. Now I 
> don't know if the 
> agent++ have his own objects within subtrees. I've tooked 
> your examples 
> (snmp_proxy) and have modified for our needs. If you 
> want, I can send you 
> my class.
> 
> >> - The code to add a proxied agent information in the 
> proxy agent is : 
> 
> >>
> >>        MibProxy* mp = new MibProxy( ( LPCTSTR ) 
> subtree, READCREATE, 
> hostUdpAddress
> >> );
> >>        mp->set_community( READING, ( LPCTSTR ) 
> readCommunity ); 
> >>        mp->set_community( WRITING, ( LPCTSTR ) 
> writeCommunity ); 
> >>        m_mib.add( mp ); //m_mib is a Mib object
> >
> >I just added similar code to one of the examples and had 
> no problems. 
> >Are you using the current version of agent++?
> 
> I have no problems on agents with small trees, but if I 
> check on windows 
> snmp agent or cisco routers it seems that after some 
> tables the proxy agent 
> stop formwarding requests (as is mentioned in the log).
> 
> >> I have tried the proxy agent on a Cisco router (in the 
> proxy agent I 
> expose
> >> 1.3.6.1.2.1 subtree). When I execute snmpwalk on my 
> proxy agent I only 
> >receive
> >> oids from 1.3.6.1.2.1.1.1.1 to 1.3.6.1.2.1.11.32. When 
> I execute snmpwalk 
> >> on the router agent I got oids to 1.3.6.1.2.1.52.2.1
> >> It seems that after the table 11 the proxy agent 
> cannot find the rest 
> of
> >> tables, and, according to the log, the proxy agent 
> searches for the rest 
> >> in another mib table
> >
> > From your log, I can see is that the agent does not try 
> to contact the 
> 
> >Cisco agent (although it should do that) and does not 
> have the requested 
> >
> >oid in is own mib.
> 
> Do you know why my proxy agent stops contacting the cisco 
> agent, although 
> it has forwarded all requests until 1.3.6.1.2.1.11.32 ? 
> As I understand, 
> if I tell my proxy agent that the subtree 1.3.6.1.2.1 
> goes to the ip address 
> 10.1.8.1, all requests within this subtree must be 
> forwarded to this host. 
> 
> >Does one of my hints above solve your problem?
> 
> In you opinion must I use the old proxy object or go 
> further with the proxy 
> forwarder ?
> 
> >
> >Kind regards,
> >   Jochen
> 
> Thank you and kind regards,
> Anton.
> 
> 
>