Automatic Link Discovery; Lldp Overview; Figure 3.78 - Lldp - Alcatel-Lucent 9500 User Manual

Automatic link discovery

3.11 — Automatic link discovery
Automatic link discovery allows an MPR equipment (MPR-e, MPR-1c, MSS, 7705 SAR
and MPR-e in Single NE mode) to discover and store information about its neighbors. This
information is then used by network managers such as 5620 SAM to automatically learn
the network topology.
The radio link discovery is performed via an Alcatel-Lucent proprietary Discovery
Protocol.
In addition the MPR-e supports automatic link discovery over Ethernet using LLDP.
3.11.1 — LLDP overview
LLDP is a neighbor discovery protocol that defines a method for Ethernet network devices
to advertise information about themselves, such as device configuration, capabilities and
identification, to directly connect LLDP-enabled devices on the same physical LAN and
store the information received from other stations in IEEE-defined Management
Information Bases (MIB) modules.
LLDP is a data-link layer protocol operating above the MAC service layer and, as a result,
can be used in any networking device that implements a MAC service.
Using LLDP over the User Ethernet interfaces, an MPT in MPR-e topology is able to
advertise its own identification information its capabilities and media-specific
configuration information and learn the same information from the LLDP-Enabled devices
connected to it.
The IEEE 802.1ab Link Layer Discovery Protocol defines a standard way for Ethernet
devices to advertise information about themselves to their network neighbors and store
information they discover from other device.
Figure 3.78
Legend:
182
shows the discovery process.
Figure 3.78 — LLDP
MPR-e and MSS-1c User Manual 3DB19901EFAA Edition 01