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			Appendix A Common Services

Table 151 Commonly Used Services (continued)

NAME	PROTOCOL	PORT(S)	DESCRIPTION
PPTP_TUNNEL	User-Defined	47	PPTP (Point-to-Point Tunneling Protocol)
(GRE)			enables secure transfer of data over public
			networks. This is the data channel.

RCMD	TCP	512	Remote Command Service.

REAL_AUDIO	TCP	7070	A streaming audio service that enables
			real time sound over the web.

REXEC	TCP	514	Remote Execution Daemon.

RLOGIN	TCP	513	Remote Login.

RTELNET	TCP	107	Remote Telnet.

RTSP	TCP/UDP	554	The Real Time Streaming (media control)
			Protocol (RTSP) is a remote control for
			multimedia on the Internet.

SFTP	TCP	115	Simple File Transfer Protocol.

SMTP	TCP	25	Simple Mail Transfer Protocol is the
			message-exchange standard for the
			Internet. SMTP enables you to move
			messages from one e-mail server to
			another.

SNMP	TCP/UDP	161	Simple Network Management Program.

SNMP-TRAPS	TCP/UDP	162	Traps for use with the SNMP (RFC:1215).

SQL-NET	TCP	1521	Structured Query Language is an interface
			to access data on many different types of
			database systems, including mainframes,
			midrange systems, UNIX systems and
			network servers.

SSH	TCP/UDP	22	Secure Shell Remote Login Program.

STRM WORKS	UDP	1558	Stream Works Protocol.

SYSLOG	UDP	514	Syslog allows you to send system logs to a
			UNIX server.

TACACS	UDP	49	Login Host Protocol used for (Terminal
			Access Controller Access Control System).

TELNET	TCP	23	Telnet is the login and terminal emulation
			protocol common on the Internet and in
			UNIX environments. It operates over TCP/
			IP networks. Its primary function is to
			allow users to log into remote host
			systems.

TFTP	UDP	69	Trivial File Transfer Protocol is an Internet
			file transfer protocol similar to FTP, but
			uses the UDP (User Datagram Protocol)
			rather than TCP (Transmission Control
			Protocol).

VDOLIVE	TCP	7000	Another videoconferencing solution.

MGS3700-12C User’s Guide

433 metrogigabit switch specifications

ZyXEL Communications has long been a prominent player in the networking hardware industry, providing innovative solutions that cater to both business and consumer markets. Among their notable offerings is the Metrogigabit switch, a device designed to meet the high demands of modern networks.

The ZyXEL Metrogigabit switch is primarily aimed at service providers and large enterprises, recognizing the need for seamless connectivity in an increasingly digital world. This switch is engineered for scalability, enabling users to effortlessly expand their network as their operational needs grow. With support for high bandwidth, it is particularly suited for environments requiring extensive data traffic management, such as data centers and campus networks.

One of the standout features of the Metrogigabit switch is its high-density gigabit Ethernet ports, which provide a backbone for reliable data transmission. The switch typically supports multiple 10G SFP+ uplinks, ensuring fast and efficient connections to upstream devices. This capability allows users to configure their networks to handle large volumes of data quickly and without interruption.

In terms of technology, the Metrogigabit switch leverages advanced Layer 2 and Layer 3 functionalities. This includes features such as VLAN support for traffic segmentation, Quality of Service (QoS) for prioritizing mission-critical applications, and robust multicast management. These capabilities contribute to enhanced network efficiency and performance.

Another characteristic that sets the ZyXEL Metrogigabit switch apart is its built-in security features. The device is designed to protect network integrity through mechanisms like port security, access control lists, and advanced authentication protocols. This focus on security helps prepare businesses to counteract potential threats in a landscape where cyber attacks are increasingly sophisticated.

Moreover, the switch is equipped with a user-friendly management interface, which simplifies the process of monitoring and configuring network settings. This is complemented by support for SNMP and RMON, allowing network administrators to leverage tools for effective performance monitoring.

In summary, the ZyXEL Metrogigabit switch is an essential tool for organizations seeking robust performance, reliability, and security in their networking infrastructure. With its high-density ports, flexible configuration options, and comprehensive management features, it provides a strong foundation for building efficient and scalable networks. Whether for service providers or enterprises, this switch stands out as a reliable choice in the fast-evolving technological landscape.

ZyXEL Communications metrogigabit switch manual 433

Models: metrogigabit switch

Table 151 Commonly Used Services (continued)

NAME

RTSP

TCP/UDP

SMTP

TCP

SQL-NET

TCP

TELNET

TCP

TFTP

UDP

metrogigabit switch specifications