ECS4110-28T_Management Guide

C HAPTER 1 | Introduction
Description of Software Features
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QUALITY OF SERVICE Differentiated Services (DiffServ) provides policy-based management
mechanisms used for prioritizing network resources to meet the
requirements of specific traffic types on a per-hop basis. Each packet is
classified upon entry into the network based on access lists, IP Precedence
or DSCP values, or VLAN lists. Using access lists allows you select traffic
based on Layer 2, Layer 3, or Layer 4 information contained in each
packet. Based on network policies, different kinds of traffic can be marked
for different kinds of forwarding.
ETHERNET RING
PROTECTION
SWITCHING
ERPS can be used to increase the availability and robustness of Ethernet
rings, such as those used in Metropolitan Area Networks (MAN). ERPS
provides Layer 2 loop avoidance and fast reconvergence in Layer 2 ring
topologies, supporting up to 255 nodes in the ring structure. It can also
function with IEEE 802.1ag to support link monitoring when non-
participating devices exist within the Ethernet ring.
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 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.