Operation Diagnostics
Basic - L3P
Release
3.1
06/07
9.8
Topology discovery
185
This information can be called up from a network management station. With
this information, the network management station is able to display the topo
-
logy of the network.
LLDP uses an IEEE-MAC address for exchanging information. This address
is normally not routed by switches. This is why switches without LLDP
support drop the LLDP packets. Consequently, a non-LLDP-capable device
between two LLDP-capable devices prevents the exchange of LLDP infor
-
mation. To avoid this, Hirschmann Switch send additional LLDP packets to
the Hirschmann Multicast-MAC address 01:80:63:2F:FF:0B. Hirschmann
Switch with the LLDP function are thus also able to exchange LLDP informa
-
tion with each other via devices which themselves are not LLDP-capable.
The Management Information Base (MIB) of an LLDP capable Hirschmann
Switch holds out the LLDP information in the lldp-MIB and in the private
hmlldp-MIB.
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