- play_arrow Working With Network Director
- play_arrow About Network Director
- play_arrow Installing Network Director
- play_arrow Accessing Network Director
- play_arrow Understanding Network Director System Administration and Preferences
- play_arrow Getting Started with Network Director
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- play_arrow Working with the Dashboard
- play_arrow About the Dashboard
- play_arrow Using the Dashboard
- play_arrow Dashboard Widget Reference
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- play_arrow Working in Build Mode
- play_arrow About Build Mode
- play_arrow Discovering Devices
- play_arrow Setting Up Sites and Locations Using the Location View
- Understanding the Location View
- Setting Up the Location View
- Creating a Site
- Configuring Buildings
- Configuring Floors
- Setting Up Closets
- Assigning and Unassigning Devices to a Location
- Changing the Location of a Device
- Deleting Sites, Buildings, Floors, Wiring Closets, and Devices
- Configuring Outdoor Areas
- play_arrow Building a Topology View of the Network
- play_arrow Creating Custom Device Groups
- play_arrow Configuring Quick Templates
- play_arrow Configuring Device Settings
- play_arrow Configuring Authentication, Authorization, and Access for Your Network
- play_arrow Configuring Interfaces and VLANs
- Understanding Port Profiles
- Creating and Managing Port Profiles
- Assigning and Unassigning Port Profiles from Interfaces
- Managing Auto Assignment Policies
- Creating Auto Assignments
- Configuring Easy Config Setup
- Understanding Port Groups
- Creating and Managing Port Groups
- Understanding VLAN Profiles
- Creating and Managing VLAN Profiles
- Assigning a VLAN Profile to Devices or Ports
- play_arrow Configuring Firewall Filters (ACLs)
- play_arrow Configuring Class of Service (CoS)
- play_arrow Configuring Media Access Control Security (MACsec)
- play_arrow Configuring Link Aggregation Groups (LAGs)
- play_arrow Creating and Managing Fabrics
- Understanding Junos Fusion
- Understanding Junos Fusion Enterprise
- Software Requirements for Junos Fusion
- Creating and Managing Fusion Configuration Templates
- Managing Fusion Fabrics
- Creating and Managing Satellite Software Upgrade Groups
- Understanding Layer 3 Fabrics
- User Privileges Required for the DHCP and File Server While Using Zero Touch Provisioning
- Managing Layer 3 Fabrics
- Creating Layer 3 Fabrics
- Editing Layer 3 Fabrics
- Viewing Layer 3 Fabric Connectivity
- Performing Layer 3 Fabric Connectivity Checks
- play_arrow Configuring VRRP Profiles
- play_arrow Managing Network Devices
- Viewing the Device Inventory Page
- Physical Topology
- Viewing Profiles Assigned to a Device
- Viewing the Physical Inventory of Devices
- Viewing Licenses With Network Director
- Viewing a Device's Current Configuration from Network Director
- Assigning Devices to Logical Category
- Accessing a Device’s CLI from Network Director
- Accessing a Device’s Web-Based Interface from Network Director
- Deleting Devices
- Rebooting Devices
- Viewing Virtual Machines
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- play_arrow Working in Deploy Mode
- play_arrow About Deploy Mode
- play_arrow Deploying and Managing Device Configurations
- Deploying Configuration to Devices
- Managing Configuration Deployment Jobs
- Deploy Configuration Window
- Importing Configuration Data from Junos OS Configuration Groups
- Enabling High-Frequency Traffic Statistics Monitoring on Devices
- Configuring Network Traffic Analysis
- Approving Change Requests
- Enabling SNMP Categories and Setting Trap Destinations
- Understanding Resynchronization of Device Configuration
- Resynchronizing Device Configuration
- Managing Device Configuration Files
- Creating and Managing Baseline of Device Configuration Files
- play_arrow Deploying and Managing Software Images
- play_arrow Managing Devices
- play_arrow Setting Up Zero Touch Provisioning for Devices
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- play_arrow Monitoring Devices and Traffic
- play_arrow About Monitor Mode
- play_arrow Monitoring Traffic
- play_arrow Monitoring Client Sessions
- play_arrow Monitoring Devices
- play_arrow Monitoring and Analyzing Fabrics
- play_arrow Monitoring Virtual Networks
- play_arrow General Monitoring
- play_arrow Monitor Reference
- 802.11 Packet Errors Monitor
- Access vs. Uplink Port Utilization Trend Monitor
- Current Sessions Monitor
- Current Sessions by Type Monitor
- Error Trend Monitor
- Equipment Summary By Type Monitor
- Node Device Summary Monitor
- Port Status Monitor
- Port Status for IP Fabric Monitor
- Port Utilization Monitor
- Power Supply and Fan Status Monitor
- Resource Utilization Monitor for Switches, Routers, and Virtual Chassis
- Status Monitor for Junos Fusion Systems
- Status Monitor for Layer 3 Fabrics
- Status Monitor for Switches and Routers
- Status Monitor for Virtual Chassis
- Status Monitor for Virtual Chassis Members
- Top Talker - Wired Devices Monitor
- Traffic Trend Monitor
- Unicast vs Broadcast/Multicast Monitor
- Unicast vs Broadcast/Multicast Trend Monitor
- User Session Details Window
- Virtual Chassis Topology Monitor
- VC Equipment Summary By Type Monitor
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- play_arrow Working in Report Mode
- play_arrow About Report Mode
- play_arrow Creating and Managing Reports
- play_arrow Report Reference
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- play_arrow Working with Network Director Mobile
- play_arrow About Network Director Mobile
- play_arrow Getting Started with Network Director Mobile
- play_arrow Working in the Network Director Mobile Dashboard Mode
- play_arrow Working in the Network Director Mobile Devices Mode
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Understanding Fault Mode in Network Director
The Fault mode shows you information about the health of your network and changing conditions of your equipment. Use Fault mode to find problems with equipment, pinpoint security attacks, or to analyze trends and categories of errors.
This topic describes:
What Are Events and Alarms?
Activity on a network device consists of a series of events. A software component on the network device, called an entity, is responsible for running the Simple Network Management Protocol (SNMP) to log and monitor these events. When certain types of events are persistent, or when the condition causing the event crosses a threshold, SNMP sends a notification, also called a trap to Network Director. Network Director correlates traps, describing a condition, into an alarm . For example, multiple power supply traps coming from a device are correlated into a single power supply alarm for the device.
There are many types of alarms. An alarm can be as routine as when the device changes state or as serious as when a power supply has failed. When an alarm is sent, or raised, it stays raised until the triggering condition is resolved or cleared. The system can clear the alarm when the state changes again or an administrator can clear it manually, which indicates that the condition is now resolved.
SNMP also plays another role in Network Director. Enabling devices for SNMP with the appropriate read-only V1/V2/V3 credentials, can speed up device discovery.
Alarm Severity
Alarms are ranked by their impact to the network. The following list shows the ranking of alarms in Network Director from alarms that have the most impact to alarms that have the least impact on the network. It also shows the color scheme associated with each level of severity that is reflected in related graphs.
Critical (Red) | A critical condition exists; immediate action is necessary. |
Major (Orange) | A major error has occurred; escalate or notify as necessary. |
Minor (Light orange) | A minor error has occurred; notify or monitor the condition. |
Info (Blue) | An informational message; no action is necessary. Informational alarms do not necessarily indicate an error. It could indicate that a device or entity has changed state. |
Warning (Yellow) | A message indicating a major error which can occur if necessary actions are not taken. |
Administrators can override the default severity of an alarm and set the severity to match their inhouse guidelines. Changing the severity level for an alarm is done on the Fault tab of System Preferences.
Alarm Classification
Network Director organizes alarms into categories so you can view trends in the types of errors occurring on a network. These categories, shown in Table 1 are derived from the SNMP Management Information Base (MIB) that is the information database or module containing the trap information for the event.
Category | Description |
---|---|
BFD | Indicates alarms for Bidirectional Forwarding Detection sessions. These alarms are generated from EX Series switches. |
BGP | Indicates alarms for BGP4. |
Chassis | Indicates alarms for switch hardware, in this case, EX Series switches. |
Configuration | Indicates alarms for configuration management. |
CoS | Indicates class of service alarms. |
DHCP | Indicates local server DHCP alarms. |
DOM | Indicates Digital Optical Monitoring alarms that are generated from optical interfaces. |
FlowCollection | Indicates alarms generated when collecting and exporting traffic flows. |
General | Indicates alarms that are common to all network devices, such as link up/down or authentication. |
GenericEvent | Indicates an alarm that is generated from an Op script or event policies. |
L2ALD | Indicates MAC address alarms generated from the Layer 2 Address Learning Daemon (L2ALD). |
L2CP | Indicates alarms generated by Layer 2 Control Protocol features. |
MACFDB | Indicates an alarm for when MAC addresses are learned or removed from the forwarding database of the monitored device. |
Misc | Indicates alarms that do not fit into the other categories. |
PassiveMonitoring | Indicates alarms that occur on a passive monitoring interface. |
Ping | Indicates alarms that a generated during a Ping request. |
RMon | Indicates RMON alarms |
SONET | Indicates a SONET or SDH alarm on an interface. |
SONET APS | Indicates alarms generated on a SONET interface that participates in Automatic Protection Switching (APS). |
VirtualChassis | Indicates alarms generated from Virtual Chassis members regarding member or port status. |
VNetwork | Indicates virtual networking alarms. |
Alarm State
Once an alarm is active, it has one of these states:
Active—Alarms that are current and not yet acknowledged or cleared.
Cleared—Alarms that are resolved and the device or entity has returned to normal operation.
Some alarm states go directly from active to cleared state and require little to no administrative effort. However, other alarms with a high severity should be acknowledged and investigated.
In addition to acknowledging and clearing an alarm, you can assign an alarm to someone and you can append a note or annotation to an alarm. Annotations are helpful for documenting the resolution of an alarm or time estimates for a fix. Changes to an alarm’s state are made through the Alarm State monitor in Fault mode.
Alarm Notifications
Alarms can be enabled for email notification. When an alarm with notification enabled is generated, an email is sent to a set of specified addresses. There is a list of global email addresses that receive notifications from all alarms with notification enabled. Each alarm type can also have a list of addresses that receive notification when that alarm type is generated. Administrators can enable notification for alarm types and specify addresses to receive email notifications. These tasks are done on the Fault tab of System Preferences.
Threshold Alarms
Threshold alarms are alarms that are generated when a monitored value crosses the configured threshold. They provide enhanced visibility into potential issues on the network. Administrators configure and manage threshold alarms the same way as other alarms, and can set the threshold level of individual threshold alarms on the Fault tab of System Preferences.