Chapter 12. End host information
sFlowTrend-Pro uses sFlow data to automatically discover the switch and
interface that connects an end host to the network. You can access this
location information, together with other useful information about
an end host by selecting the
Lookup host dialog.
menu item. This opens the
The Lookup host dialog includes the following
Enter the IP address, MAC address or the DNS name of
the end host for which information is required.
- DNS name
- MAC address
The MAC address for an IP address is discovered from
the traffic monitored over the last hour. If an IP
address has not been seen in the last hour, then the
MAC address will not be displayed.
- MAC vendor
If the MAC address is displayed, then the MAC vendor
code in the MAC address is used to look up the
The location (switch and interface connecting the
end host to the network), is discovered from traffic
monitored over the last hour. The location is given in
Switch IP address>ifIndex.
If the end host is not local then its location will
be shown as the up link of the monitored switch or
router closest to the border.
If the end host has not been seen in the last hour, then
the location will not be displayed.
If the IP address for the end host is discovered, then
it will be used to look up the country and indicate the
country on the map. The country location for some IP
address (for example local 10* addresses) are unknown.
- Merit Network's Routing Assets Database (RADb)
Clicking on this link will open a browser to lookup the
IP address in RADb. If the IP address is not shown,
then this link will be inactive.
You can also access end host information directly from the
Top N and Circles charts
by clicking on the
symbol shown next to end host addresses in the charts.
End host address mapping and location information can also be shown
in reports by selecting the database key functions:
locate, mac, and
Section 16.4.2, “Key functions”