ZyXEL Communications ES-4124 manual 437

Appendix A Product Specifications

Table 150 Firmware Specifications

FEATURE	DESCRIPTION
Multicast VLAN Registration	Multicast VLAN Registration (MVR) is designed for applications (such as
(MVR)	Media-on-Demand (MoD)) using multicast traffic across a network. MVR
	allows one single multicast VLAN to be shared among different
	subscriber VLANs on the network.
	This improves bandwidth utilization by reducing multicast traffic in the
	subscriber VLANs and simplifies multicast group management.
IP Multicast	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	RIP (Routing Information Protocol) allows a routing device to exchange
	routing information with other routers.
OSPF	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	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.
VRRP	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.
STP (Spanning Tree	(R)STP detects and breaks network loops and provides backup links
Protocol) / RSTP (Rapid	between switches, bridges or routers. It allows a Switch to interact with
STP)	other (R)STP -compliant switches in your network to ensure that only
	one path exists between any two stations on the network.
Loop Guard	Use the loop guard feature to protect against network loops on the edge
	of your network.
IP Source Guard	Use IP source guard to filter unauthorized DHCP and ARP packets in
	your network.
Link Aggregation	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.
Port Authentication and	For security, the Switch allows authentication using IEEE 802.1x with an
Security	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.
Authentication and	The Switch supports authentication and accounting services via
Accounting	RADIUS and TACACS+ AAA servers.
Device Management	Use the web configurator or commands to easily configure the rich range
	of features on the Switch.
Port Cloning	Use the port cloning feature to copy the settings you configure on one
	port to another port or ports.
Syslog	The Switch can generate syslog messages and send it to a syslog
	server.

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ES-4124 User’s Guide