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Both Basic and Extended groups can be created as either top-level, sibling, or child groups. NetMRI automatically assigns a parent group ID to the group you create. You can drag and drop a group in the tree for the desired position. For more information, see the following sections:
- Creating a Top-Level or Sibling Device Group
- Creating a Child Device Group
- Creating Extended Device Groups
The table in the Device Groups side tab lists all device groups, with default sorting by Rank. Each row shows group configuration settings. Parent groups appear as folder icons indicating that child device groups exist beneath them in the tree. The device groups table provides a series of columns showing the status of various discovery and monitoring features that are enabled or disabled for each group.
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ARP (Refresh device caches) | Indicates whether member devices in the group will have their ARP caches refreshed before collecting discovery data. NetMRI uses ARP cache refresh to control LAN switches from which switch-forwarding data is collected. For more information, see Notes on ARP, Switch Data Collection, and End Hosts. |
SNMP | Indicates whether the device group is set to enable SNMP data collection for member devices. SNMP collection can also be enabled/disabled for groups and devices. |
PS (Port Scan) | Indicates whether members of the device group will be scanned for open protocol ports. If enabled, NetMRI probes the TCP and UDP ports listed at Settings icon –> icon > Setup –> > Port List, to determine whether they are open. For more information, see Defining Group Data Collection Settings. |
FP (Fingerprint) | Indicates the device group setting to use the Identify device using fingerprinting setting for member devices. (This setting is dependent on the Probe for Open ports feature.) A polling technique to identify each network device based on the response characteristics of its TCP stack. This information is used to determine the device type. In the absence of SNMP access, fingerprinting is usually the only way to identify non-network devices. For more information, see Defining Group Data Collection Settings. |
C (Collect configs) | Indicates the device group setting to allow config file collection for all members in the group (Collect config files). |
CCS (CCS scripting) | Indicates the device group setting to allow CCS script file execution for all members in the group (Allow Script Execution). |
| PP (Privileged Polling) | Indicates whether the option CLI polling in privileged mode (i.e. privileged exec (enable) mode) is enabled for the group the device belongs to. You can override this setting for an individual device in the Device Viewer. |
DC (Default Credentials) | Indicates the device group setting for Test for Default Credentials, used to scan for the presence of vendor default credentials for all members in the group. |
A (Issue Analysis) | Indicates the device group setting to allow Issue analysis for all members in the group (Analyze for Issues). For more information about Issue analysis, see Viewing Issues in the Network. |
CL (Config Lock) | Indicates the device group setting to collect config data but to consider all member device configs locked and not to be changed through NetMRI (Regard configurations as 'locked'). For more information, see Defining Group Data Collection Settings. |
| UGPF (Use Global Polling Frequency) | Indicates whether the device group uses the global polling frequency value. For more information, see Setting Polling Frequency for a Device Group. |
| PF (Polling Frequency) | Indicates whether the device group uses a custom polling frequency value. For more information, see Setting Polling Frequency for a Device Group. |
NB (NetBIOS Scan) | Device polling method to collect the NetBIOS name for endpoint devices in the network. Device groups also enable NetBIOS scanning. For more information, see Defining Group Data Collection Settings. |
DB (Discovery Blackout) | Indicates the device group setting to impose discovery blackouts. For more information, see Defining Blackout Periods. |
CB (Change Blackout) | Indicates the device group setting to impose configuration change blackouts. For more information, see Defining Blackout Periods. |
SPMC (SPM | Indicates the device group setting to allow switch port data collection (Switch port data Collection). For more information, see Device Groups and Switch Port Management. |
SPMS (Polling Schedule) | Indicates whether the device group provides a polling interval or scheduling for switch port data collection. This setting is dependent on an enabled Switch port data Collection setting for the device group. |
MC (Membership Criteria) | Hovering the mouse over the checkbox in this column shows the complete regular expression for the selected device group. For more information, see Understanding Device Group Membership Criteria. |