Re: Howto setup netsnmp for proxying and failover
Boris Zweimueller <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
> Hi Dave > > thanks a lot for your fast answer! > > - I don't know how you'd want to handle receiving different answers from > - the parralel proxied agents, but the above should be a workable arrangement. > Answers from different parallel proxies are simply compared. If they are different this shows some missconfiguration/error. Then the device(s) are restarted and reconfigured somethin like that. > > - send the delegated request to multiple destinations > > I already looked at the current proxy code and made some simple examples sending the same request multiple times. > > I found that the easiest method would probably be, if 'doublicate registrations' would be possible, so that proxy requests for the same oid (but with different session info - e.g. other peername) get executed by the proxy_handler. I have not been able to figure out how exactly this doublicate entries are removed from the processing list in the agent_registry. Could you give me a hint? Thanks a lot! > > Boris > > > Am 19.05.2010 um 09:37 schrieb Dave Shield: > >> On 18 May 2010 22:38, Boris Zweimueller <[email protected]> wrote: >>> For failover reasons, the hardwares device is doubled. >>> Failure of one device should be handeled transparently. >>> So ... SNMP Requests should always go to both internal devices >> >>> How can one request be forwarded to two agents? >>> How can answers be collected and be sentback to the manager? >> >> >> That's not a model of operation which the current agent supports. >> The proxy module can forward incoming SNMP requests to a specified (single) >> subagent, but isn't designed to handle multiple redundant subagents >> for the same request. You'd have to implement this yourself. >> >> I'd suggest you start with the existing proxy code, and extend it to: >> - send the delegated request to multiple destinations >> - accept the first response (as currently) >> - accept and discard all following responses >> >> I don't know how you'd want to handle receiving different answers from >> the parralel proxied agents, but the above should be a workable arrangement. >> >> >> >> Dave > ------------------------------------------------------------------------------ _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users