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Q. How can I remove a device from NetMRI?
A. A network device is removed if it is in the included CIDR blocks and hasn't been accessed by NetMRI in a 7-day period and it hasn't shown up anywhere on the network based on data collected in the past day. This 7-day period is adjusted with the Device Expiration Days setting in on the Settings icon > General Settings > Advanced Settings page. Data sources checked to see if the device exists include ARP, routing, CDP, and any /32 or /128 CIDR blocks. A discovery diagnostic of a device will show which devices are reporting this device in those tables for help in troubleshooting problems. Any device included in a CIDR block is removed after one day. Any non-network device, such as a PC, is removed from NetMRI if it isn't seen in any collected data in the previous 24-hour period.
Q. What kinds of IPv6 networks do I need to add to my seed routers or discovery ranges?
A. IPv6 standards define several new types of network prefixes , because the address value is longer and is formatted differently. Unique local IPv6 Unicast network prefixes begin with the designation FC00:/7. (These values are similar to the familiar 10.x.x.x, 172.16.x.x and 192.168.x.x IP prefixes.) Globally routable values begin with the 2000:/ or 2001:/ prefixes but are not used as examples in this document because of the need to use private address spaces in documentation, to avoid possible conflicts with live networks.
NetMRI discovery of IPv6 networks can make use of Hints and CIDR blocks for discovery.
Do not use link-local or multicast addresses as a device hint, for a range, or a seed router. Unique local IPv6 unicast values are acceptable. As with the 10.x.x.x and other private IPv4 values, they are not globally routable and are safe for use in the local network. Also see the section For more information, see Configuring Network Discovery Settings for more information.
Q. Some devices in my network only support SNMPv2c. Can I use SNMPv2c credentials as the default for discovery?
A. Yes. See For more information, see Choosing SNMP Protocol Preferences for more details.
Q. Can I define SNMPv3 credentials with both types of secret keys to conform to my organization's security policies?
A. Yes. You can define SNMPv3 credentials with separate authentication and privacy key values. See SNMPv3 Credentials for Discovery and Management for more details.
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Q. Why can't I specify device groups for the SysAdmin role?
A. The SysAdmin role is not intended as an operator (i.e., restricted to certain network domains), but rather as a system administrator with authority throughout the NetMRI appliance. For security and safety, you should only use this role when performing actions that require it.
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Q. Can I disable HTTP access to NetMRI?
A. By default, both HTTP and HTTPS modes are enabled. Infoblox recommends disabling the HTTP mode. Click To modify the settings, go to the Settings icon > General Settings > Security > NetMRI HTTPS Settings to modify settings.
Q. What well-known ports does NetMRI use?
A. Outbound ports:
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