Web Management Guide-R04

Table Of Contents
Chapter 1
| Introduction
Description of Software Features
– 45 –
Operation,
Administration,
and Maintenance
The switch provides OAM remote management tools required to monitor and
maintain the links to subscriber CPEs (Customer Premise Equipment). This section
describes functions including enabling OAM for selected ports, loopback testing,
and displaying remote device information.
Multicast Filtering Specific multicast traffic can be assigned to its own VLAN to ensure that it does not
interfere with normal network traffic and to guarantee real-time delivery by setting
the required priority level for the designated VLAN. The switch uses IGMP Snooping
and Query for IPv4, MLD Snooping and Query for IPv6, and IGMP at Layer 3 to
manage multicast group registration. It also supports Multicast VLAN Registration
(MVR for IPv4 and MVR6 for IPv6) which allows common multicast traffic, such as
television channels, to be transmitted across a single network-wide multicast VLAN
shared by hosts residing in other standard or private VLAN groups, while
preserving security and data isolation for normal traffic.
Link Layer Discovery
Protocol
LLDP is used to discover basic information about neighboring devices within the
local broadcast domain. LLDP is a Layer 2 protocol that advertises information
about the sending device and collects information gathered from neighboring
network nodes it discovers.
Advertised information is represented in Type Length Value (TLV) format according
to the IEEE 802.1ab standard, and can include details such as device identification,
capabilities and configuration settings. Media Endpoint Discovery (LLDP-MED) is an
extension of LLDP intended for managing endpoint devices such as Voice over IP
phones and network switches. The LLDP-MED TLVs advertise information such as
network policy, power, inventory, and device location details. The LLDP and LLDP-
MED information can be used by SNMP applications to simplify troubleshooting,
enhance network management, and maintain an accurate network topology.