To diagnose missing connections between the nodes in the Network Topology views, check the following:
- Verify that the same SNMP version (v1, v2, or v3) is configured on the device and in the NetCrunch SNMP Profile.
- Check if data is displayed in the
Node Status->Interfaceson any firewall/switch. - Check if SNMP counter values are properly collected and displayed in the
Node Status->Performanceon your firewall/switch. - NetCrunch uses information from the BRIDGE-MIB to display the Physical Segment data, so make sure this information is accessible on your firewalls/switches.
- If the SNMPv3 version is used, configure the Context Names on the SNMP devices and in the NetCrunch SNMP Profile(s).
Note:
If the described tips do not solve your problem, we may need to diagnose it further for your particular device (it may respond in a less standardized way). We may request an SNMP walk file from this device to verify it. Please contact AdRem support for the SNMPWalker diagnostic tool at support@adremsoft.com.