Initialisation
References
- Definition
- SOS is assigned the OID: 1.3.6.1.4.1.24723
- explanation: iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 24723
- see http://oid-info.com/get/1.3.6.1.4.1.24723
Resources
- Articles
- Network Management and SMTP
- Microsoft Technet Article: How SNMP works
- Downloads
Prerequisites
- Each message transferred by SNMP has to be assigned a respective OID that is an extension to the SOS assigned OID
- OIDs used for a product such as JobScheduler, JADE would be assigned a product extension.
- For a specific product the OID is further extended for use by messages for that product.
- OIDs of all SOS products are collected into one MIB.
Component Architecture
- Document: JobScheduler_SNMP_Support.pdf
- Presentation: JobScheduler_SNMP_Support.pptx
Implementation
Prerequisites
- Implementation for SNMPv3
- No previous versions are supported
Communication
SNMP Message Types
- Communication makes use of a set of predefined message types
- Excerpt extracted from chapter SNMP Message Types in http://technet.microsoft.com/en-us/library/cc783142(v=ws.10).aspx#w2k3tr_snmp_how_oqdv:
| SNMP Message | From / To | Message Description |
|---|---|---|
Get | Manager / Agent | Accesses and retrieves the current value of one or more MIB objects on an SNMP agent . |
GetResponse | Agent / Manager | Replies to a Get, GetNext, or Set operation. |
GetNext | Manager / Agent | Browses the entire tree of MIB objects, reading the values of variables in the MIB sequentially. Typically, you use GetNext to obtain information from selected columns from one or more rows of a table. GetNext is especially useful for browsing dynamic tables, such as an internal IP route table or an ARP table, reading through the table one row at a time. |
GetBulk
| Manager / Agent | Retrieves data in units as large as possible within the given constraints on the message size. GetBulk, which accesses multiple values at one time without using a GetNext message, minimizes the number of protocol exchanges required to retrieve a large amount of information. |
Set | Manager / Agent | Changes the current value of a MIB object. In order to update a MIB value on the SNMP agent, the SNMP manager must have write access to the object. Set is used infrequently, because most MIB objects are read-only by default, so that unauthorized changes cannot be made. |
Trap | Agent / manager | Notifies the specified SNMP manager (the trap destination) when an unexpected event occurs locally on the managed host. You can use traps for limited security checking (such as notifying the trap destination if the agent receives an information request from an SNMP manager that it does not recognize) or for troubleshooting (such as notifying the trap destination if the WINS service fails). |
Request / Response
Traps
- The following traps are supported:
- Coldstart
- Warmstart
- Linkdown
- Linkup
Authentication Failure
- EGPNeighbourloss
- Enterprisespecifictrap
- x
Implementation Architecture