The software requires IPv4 network access (LAN, WAN
or VPN) from your computer to the managed switches. (IPv6 not currently supported, but support is planned)
The switch must have SNMP v1 or v2c or v3 activated - some switch manufacturers disable SNMP by default. You will need the SNMP v1 or v2c
read-only community name to access the switch (it is like a password) or SNMPv3 read access credentials. You may need to set permissions in the
switch ACL so your IP address can access the switch. Some switches may require changes to settings allowing SNMP to access Bridge-MIB. For best
results, two additional SNMP enabled devices may be queried for their ARP tables.
Requirements for obtaining IPv4 addresses: Managed switches usually operate at layer 2 which means they keep track of the MAC addresses attached to their ports and report the information
in Bridge-Mib and/or qBridge-mib. The IP addresses are not kept in the switch's port forwarding tables. When we retrieve the data from the switch,
we have to find the IP address that matches the list of device MAC addresses for each port. We do this by searching ARP tables from various devices.
We provide two user defined methods of retrieving ARP tables from other SNMP enabled devices such as a server or router. Ping Sweep pre-fills your
computer's local ARP table with local network segment IP/MAC addresses. You can also import a static list of MAC/IP address combinations in Database Manager.
Link Layer Discovery Protocol (LLDP) and Cisco Discovery Protocol (CDP) data contained in the switch can be shown helping you establish network
mapping neighbor relationships between the switch and devices connected to it. For instance, Windows 8 machines now send LLDP information by default.
Most switches communicate with each other either with LLDP, CDP or both.