Find Ip; Mode Of Operation; Results - Fluke Series II User Manual

Find IP

Enter the Target IP by pressing the address box and
using the keypad. Press
address, the Network Assistant first tries to determine the
MAC address of that station before performing the
search. The actual search is performed using the MAC
address. Although the IP address does not have to be on
the same subnet as the Network Assistant, it does need
to be on the local segment. It can determine the MAC
address of the IP station only if it is on the local segment.

Mode of Operation

Before Station Locator can search for a MAC address, it
must first find all the switches on the network. Switch
Discovery is performed automatically during the discovery
process. When you run Station Locator, the Network
Assistant searches the forwarding tables of each switch
that it has discovered. It searches the Bridge MIB and
some switches' private MIBs to get the port information.
In order for switch discovery to work properly, the
Network Assistant needs to know the community string of
the switches. You can configure the community strings in
the SNMP Config menu (read "SNMP" earlier in this
chapter). If you change or add community strings, you
can rerun Autotest or Network Health so the Network
Assistant will use the new community strings.
(Find). If you enter an IP

Results

The Network Assistant reports all switches that have the
target MAC address in their forwarding tables. The target
MAC address may appear in more than one switch. This
can happen in a switch hierarchy environment. When a
station on one switch communicates with a station on
another switch, the MAC address of each station will
appear in the forwarding tables of each switch.
The Network Assistant does not attempt to determine the
switch to which the station is directly connected. To
determine the switch to which the station is directly
connected, you need to be familiar with switch hierarchy.
If you can recognize the description or port number as an
uplink port, then you can deduce that the station is not
directly connected to that switch.
For each switch discovered, the following information is
presented:
q
Name – SNMP name of the switch
q
IP – IP address of the switch
q
MAC – MAC address of the switch
q
Mfr - Manufacturer and model
q
Port – The port number on which the MAC address
was found. Some switches encode the slot and port
number into the port number. For example, a switch
may represent slot 10/port 3 with a port value of
Connectivity Tests
6
Introduction
6-11