Operation diagnosis
20
9.8
Topology discovery
Basic - L3P
Release
4.0
11/07
A network management station can call up this information from a device with
LLDP activated. This information enables the network management station
to map the topology of the network.
To exchange information, LLDP uses an IEEE Mac address which Switches
do not usually send. For this reason, Switches without LLDP support discard
LLDP packets. Thus a non-LLDP-capable device between two LLDP-capa-
ble devices prevents LLDP information exchange between these two devic-
es. To get around this, Hirschmann Switches send and receive additional
LLDP packets with the Hirschmann Multicast MAC address
01:80:63:2F:FF:0B. Hirschmann Switches with the LLDP function are thus
also able to exchange LLDP information with each other via devices that are
not LLDP-capable.
The Management Information Base (MIB) of an LLDP-capable Hirschmann
Switch holds the LLDP information in the LLDP MIB and in the privaten hm-
LLDP.
9.8.2 Displaying the topology discovery
Select the Diagnostics:Topology Discovery dialog.
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