ZyXEL Communications XGS-4728F User Manual page 396

Chapter 50 Product Specifications
Table 148 Firmware Specifications
FEATURE
IP Multicast
RIP
OSPF
DVMRP
VRRP
STP (Spanning Tree
Protocol) / RSTP (Rapid
STP)
Loop Guard
IP Source Guard
Link Aggregation
Port Authentication and
Security
Authentication and
Accounting
Device Management
Port Cloning
Syslog
396
DESCRIPTION
With IP multicast, the Switch delivers IP packets to a group of
hosts on the network - not everybody. In addition, the Switch
can send packets to Ethernet devices that are not VLAN-aware
by untagging (removing the VLAN tags) IP multicast packets.
RIP (Routing Information Protocol) allows a routing device to
exchange routing information with other routers.
OSPF (Open Shortest Path First) is a link-state protocol
designed to distribute routing information within an
autonomous system (AS). An autonomous system is a
collection of networks using a common routing protocol to
exchange routing information. OSPF is best suited for large
networks.
DVMRP (Distance Vector Multicast Routing Protocol) is a
protocol used for routing multicast data within an autonomous
system (AS). DVMRP provides multicast forwarding capability
to a layer 3 switch that runs both the IPv4 protocol (with IP
Multicast support) and the IGMP protocol.
Virtual Router Redundancy Protocol (VRRP), defined in RFC
2338, allows you to create redundant backup gateways to
ensure that the default gateway of a host is always available.
(R)STP detects and breaks network loops and provides backup
links between switches, bridges or routers. It allows a Switch to
interact with other (R)STP -compliant switches in your network
to ensure that only one path exists between any two stations
on the network.
Use the loop guard feature to protect against network loops on
the edge of your network.
Use IP source guard to filter unauthorized DHCP and ARP
packets in your network.
Link aggregation (trunking) is the grouping of physical ports
into one logical higher-capacity link. You may want to trunk
ports if for example, it is cheaper to use multiple lower-speed
links than to under-utilize a high-speed, but more costly,
single-port link.
For security, the Switch allows authentication using IEEE
802.1x with an external RADIUS server and port security that
allows only packets with dynamically learned MAC addresses
and/or configured static MAC addresses to pass through a port
on the Switch.
The Switch supports authentication and accounting services via
RADIUS and TACACS+ AAA servers.
Use the web configurator or commands to easily configure the
rich range of features on the Switch.
Use the port cloning feature to copy the settings you configure
on one port to another port or ports.
The Switch can generate syslog messages and send it to a
syslog server.
XGS-4728F User's Guide