An Overview of SNMP on the IMG Description SNMP The SNMP provides a way to control and monitor a variety of equipment using one network management protocol. To do this, SNMP uses a number of common Management Information Bases (MIBs) and some company-specific MIBs to allow vendors to provide specific information about the equipment being managed. A MIB is a collection of objects that can be accessed via SNMP. For some basic information about SNMP, see the following topics: SNMP Basics What are MIBs? Cantata Implementation The IMG supports the following for SNMP: Restrictions Ability to monitor DS1, DS3, and Ethernet interfaces using industry standards MIBs Get and Trap commands. - query MIB-II statistics via SNMP "GET" messages - direct MIB-II traps to a manager. - set up the MIB-II variables (geographic location, etc.) See Supported MIBs and Supported Traps. NMS Management Tools Built-in support for industry standard MIBs among common Network Management tools. Manage network resources consumed by SNMP - limit number of packets by limiting traps Manage resources SNMP consumes on the IMG - memory usage 2 SNMP Managers per GC EMS The IMG SNMP cannot act as a proxy. The IMG does not support provisioning with SNMP SETs are not be supported 1
Supported MIBs The IMG SNMP solution supports the following standard MIBs. These MIB libraries should be included with your NMS, however, should you need to compile a standard MIB you can access them at the following web site: http://www.rfceditor.org/rfc.html There are currently no Cantata Enterprise MIBs for the IMG. RFC 1213 - Management Information Base for Network Management of TCP/IP-based internets:mib-ii A collection of managed objects used to define SNMP entities within the SNMP architecture. RFC 3895 - Definitions of Managed Objects for the DS1, E1, DS2, and E2 Interface Types Defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects used for managing DS1, E1, DS2 and E2 interfaces. RFC 3896 - Definitions of Managed Objects for the DS3/E3 Interface Type Industry Standard MIB which enables monitoring of a DS3 trunk on the IMG. RFC 2571 - An Architecture for Describing SNMP Management Frameworks A collection of managed objects used to define SNMP entities. RFC 1907 - Management Information Base for Version 2 of the Simple Network Management Protocol (SNMPv2) 3
Supported Traps alarmactivestate alarmclearstate This trap is sent out when an alarm is raised. It contains the model number of the alarm as well as a resource ID which identifies specifically what the alarm refers to (for instance for a link down alarm you would indicate which link it is) This gets sent out when an alarm is cleared. It contains the same information as the other trap. coldstart dsx1linestatuschange Indicates agent reinitializing. Configuration data may have been altered. dsx1 LineStatus changed dsx3linestatuschange linkdown linkup dsx3 Line Status changed ifoperstatus (Link Status) changed from up to down. ifoperstatus (Link Status) changed from up to down. warmstart Indicates agent reinitializing. Configuration data was not altered. 5
SNMP Agent Description Use this pane to configure the SNMP Agent on a physical IMG. Related Topics An Overview of SNMP Configuring SNMP SNMP Manager Accessing this Pane Cantata IMG EMS-> Logical IMG-> Physical IMG-> New SNMP Agent Maximum Objects: 1 per Physical IMG Pane Field Description Engine ID Unique ID for the IMG's SNMP manager. SNMP System Name The name of the IMG. The default is IMG<NodeID>. System Location Physical location of IMG. 7
SNMP System Contact Who to contact regarding problems with this IMG. Radius Client Network Interface The IP Address of the RADIUS Client for this IMG. 8
SNMP Manager Description Use this pane to configure the IMG SNMP module to match settings on your SNMP Manager. Related Topics An Overview of SNMP Configuring SNMP SNMP Agent Accessing this Pane Cantata IMG EMS -> New External Network Elements -> SNMP Managers -> SNMP Manager Maximum Objects: 2 per GC EMS Pane Field Descriptions Engine ID Unique ID of the external SNMP Manager the IMGs SNMP Agent will communicate with. SNMP User Name Human-readable name for the manager. 9
SNMP SNMP Community Name Security string to include in communications with manager running SNMPv2c. SNMP Server IP Address IP Address of the External SNMP Manager. SNMP Trap Port Port ID of the External SNMP Manager. Default = 161. SNMP Version Version of the SNMP protocol to use when communicating with the SNMP Manager. SNMP v1 SNMP v2c SNMP Timeout (ms) How long to wait for an ACK from a manager before timing out. Trap Retries How many times to resend a trap to the SNMP manager. The following fields relate to filtering traps. See examples below. Trap Notify Type Inclusive Include traps that match the filtering configured. Exclusive Exclude traps that match the filtering configured. Trap Subtree The OID of the MIB. Trap Notify Filter A mask indicating which traps to filter in/out. 10
SNMP Manager Trap Configuration Examples Examples for using the Trap Filters in the SNMP Manager object screen. Example 1 Goal: Do not report a trap for Object ID 1.3.6.1.6.3.1.1.5.4. All others will be reported. Configuration Trap Notify Type: exclusive Trap Subtree: 1.3.6.1.6.3.1.1.5.4 Trap Notify Filter: 1.1.1.1.1.1.1.1.1.1 Example 2 Goal: Do not report traps for Object ID's 1.3.6.1.6.3.1.1.5.3 and 1.3.6.1.6.3.1.1.5.4. All others will be reported. Note: OID's such as 1.3.6.1.6.3.1.1.5.1 and 1.3.6.1.6.3.1.1.5.5, etc will also not be reported. Configuration Trap Notify Type: exclusive Trap Subtree: 1.3.6.1.6.3.1.1.5 Trap Notify Filter: 1.1.1.1.1.1.1.1.1 Note: OID's such as 1.3.6.1.6.3.1.1.5.1, 1.3.6.1.6.3.1.1.5.2 and 1.3.6.1.6.3.1.1.5.5, etc will also not be reported. Example 3 Goal: Only report traps with Object ID 1.3.6.1.6.3.1.1.5.3. All others will NOT be reported. Configuration Trap Notify Type: inclusive Trap Subtree: 1.3.6.1.6.3.1.1.5.3 Trap Notify Filter: 1.1.1.1.1.1.1.1.1.1 Example 4 Goal: Only report traps with Object ID's 1.3.6.1.6.3.1.1.5.3 and 1.3.6.1.6.3.1.1.5.4. All others will NOT be reported. Configuration Trap Notify Type: inclusive Trap Subtree: 1.3.6.1.6.3.1.1.5 11
SNMP Trap Notify Filter: 1.1.1.1.1.1.1.1.1 Note: OID's such as 1.3.6.1.6.3.1.1.5.1, 1.3.6.1.6.3.1.1.5.2 and 1.3.6.1.6.3.1.1.5.5, etc will also be reported. Example 5 Goal: Only report traps that begin with Object ID 1.3.6.1. All others will NOT be reported. Configuration Trap Notify Type: inclusive Trap Subtree: 1.3.6.1 Trap Notify Filter: 1.1.1.1 12
Configuring SNMP Related Topic An Overview of SNMP Before You Begin Compile MIBs The IMG SNMP solution supports the following standard MIBs. RFC 1213 RFC 3895 RFC 3896 RFC 2571 RFC 1907 These MIB libraries should be included with your NMS, however, should you need to compile a standard MIB you can access them at the following web site: http://www.rfc-editor.org/rfc.html. There are currently no Cantata Enterprise MIBs for the IMG. Configuring SNMP on the IMG 1. Configure SNMP Agent for all Physical IMGs For each IMG that you want to monitor, configure an SNMP Agent a. Right-click on the desired Physical IMG entry and select New SNMP Agent The SNMP Agent pane appears. b. Enter information in the fields as required. See the SNMP Agent pane reference for more information. c. Repeat steps a and b for each SNMP Agent on a physical IMG. 2. Configure SNMP Manager a. Right-click External Network Elements and select New SNMP Managers 13
SNMP b. Right-click SNMP Managers and select New SNMP Manager The SNMP Manager pane appears. c. Enter information in the fields as required. See the SNMP Agent pane reference for more information. 14