C
HAPTER
1
| Introduction
Description of Software Features
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Static Routing – Traffic is automatically routed between any IP interfaces
configured on the switch. Routing to statically configured hosts or subnet
addresses is provided based on next-hop entries specified in the static
routing table.
RIP – This protocol uses a distance-vector approach to routing. Routes are
determined on the basis of minimizing the distance vector, or hop count,
which serves as a rough estimate of transmission cost.
ADDRESS RESOLUTION
PROTOCOL
The switch uses ARP and Proxy ARP to convert between IP addresses and
MAC (hardware) addresses. This switch supports conventional ARP, which
locates the MAC address corresponding to a given IP address. This allows
the switch to use IP addresses for routing decisions and the corresponding
MAC addresses to forward packets from one hop to the next. Either static
or dynamic entries can be configured in the ARP cache.
Proxy ARP allows hosts that do not support routing to determine the MAC
address of a device on another network or subnet. When a host sends an
ARP request for a remote network, the switch checks to see if it has the
best route. If it does, it sends its own MAC address to the host. The host
then sends traffic for the remote destination via the switch, which uses its
own routing table to reach the destination on the other network.
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.
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