Converged Network Analyzer (Cna) Test Plug; Link Layer Discovery Protocol (Lldp) - Avaya G250 Overview

Management

Converged Network Analyzer (CNA) test plug

CNA test plugs are a component of CNA, a distributed system tool for real-time network
monitoring that detects and diagnoses converged network-related issues. CNA is deployed in
the Branch Gateway to identify any network conditions or impairments that can degrade the
user experience for IP telephony and to monitor overall network performance. Test plugs in
media gateways provide the ability to measure end-to-end service to the edge of the PSTN, or
at points where codec changes are required for interworking between high (LAN) and low
(WAN) speed links.

Link Layer Discovery Protocol (LLDP)

LLDP simplifies network troubleshooting and enhances the ability of network management tools
to discover and maintain accurate network topologies in multi-vendor environments. LLDP
defines a set of advertisement messages (TLVs), a protocol for transmitting the TLVs, and a
method for storing the information contained in the received TLVs. This allows stations attached
to a LAN to advertise information about the system and about the station's point of attachment
to the LAN to other stations attached to the same LAN. These can be reported to the
management station via SNMP MIBs.
On the G250, LLDP is supported on all the Ethernet LAN ports on the chassis.
On the G350, LLDP is supported on the Ethernet LAN ports located on the MM314 and MM316
media modules.
58 Overview for the Avaya G250 and Avaya G350 Media Gateways