Ceragon FibeAir IP-20C, User Manual

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FibeAir IP-20C/S/E User Guide
Ceragon Proprietary and Confidential Page 243 of 597
Table 47: ABN Entity Statistics Parameters
Parameter Definition
Name The name of the ABN entity.
Tx Messages
Counter The number of bandwidth messages transmitted since the counter was last reset.
Holdoff State The Holdoff state of the monitored link. Options are:

Off – Holdoff time measurement has not been started.

Counting – Holdoff time measurement has started but the timeout has not elapsed
yet.

On – Holdoff measurement time has ended and the current bandwidth is still below
the nominal value.
Holdoff Start Time
(mSec) The Holdoff start time for the last event.
Last Tx message The last transmitted bandwidth message, in hexadecimal notation.
8.2
Configuring LLDP
This section includes:

LLDP Overview

Displaying Peer Status

Configuring the General LLDP Parameters

Configuring the LLDP Port Parameters

Displaying the Unit’s Management Parameters
 Displaying Peer Unit’s Management Parameters

Displaying the Local Unit’s Parameters

Displaying LLDP Statistics
8.2.1
LLDP Overview
Link Layer Discovery Protocol (LLDP) is a vendor-neutral layer 2 protocol that
can be used by a network element attached to a specific LAN segment to
advertise its identity and capabilities and to receive identity and capacity
information from physically adjacent layer 2 peers. LLDP is a part of the IEEE
802.1AB – 2005 standard that enables automatic network connectivity
discovery by means of a port identity information exchange between each port
and its peer. Each port periodically sends and also expects to receive frames
called Link Layer Discovery Protocol Data Units (LLDPDU). LLDPDUs contain
information in TLV format about port identity, such as MAC address and
IP address.
LLDP is used to send notifications to the NMS, based on data of the local unit
and data gathered from peer systems. These notifications enable the NMS to
build an accurate network topology.