Hi all I have the following scenario:
One master agent with several subagents running on one device. The master acts solely as a proxy, forwarding snmp requests to the subagents. I now have a new requirement: For failover reasons, the hardwares device is doubled. Failure of one device should be handeled transparently. So we then have two independent master agents with their subagents. A manager from the outside should obviously see the whole device as one logic device. SNMP Requests should always go tho both internal devices, so that they have the exact same state/configuration. To achieve this, there must be something like a new 'super'-master who forwards incoming requests somehow to both internal devices and answers of (e.g. GET requests) must be sent back (only one!) to the manager. (Of course traps and notifications from the agents must also be collected and (only one of them) sent back to the 'super'-master - but this can be implemented with snmptrapd). But how can it be done for requests and their answers? How can one request be forwarded to two agents? How can answers be collected and be sentback to the manager? I tried a lot with netsnmp's proxy configuration, but it does not seem to be possible to solve my problem with simple proxying. Is there an existing 'solution' for this kind of failover setup? Is there some software out there - sort of SNMP proxy - which simply forwards SNMP messages? I suggest I have to implement such a failover proxy manually using netsnmp API. Is this correct? Has already anyone done something similar? Can netsnmp easily forward all kinds of incoming messages or is it necessary to implement handlers for all different messagetypes? The failover functionality must be implemented on SNMP basis, because the deeply internal configuration of the two devices can be different. (So I cannot just copy the configured values a layer below SNMP). But their SNMP configuration IS the same! Any references to how to do it is greatly appreciated! Thanks a lot, Boris ------------------------------------------------------------------------------ _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
