Domain Name System (DNS) Configuration

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Sample /etc/hosts File Entries for a Dual Network Configuration

This section describes entries that you would add to the /etc/hosts file if your configuration was identical to the configuration examples listed earlier in this section.

#

#Internet host table

192.168.126.1 voipbox1 voipbox1a voipbox1c

192.168.126.2 voipbox2 voipbox2a voipbox2c

192.168.126.3 active activea activec

192.168.126.4 standby standbya standbyc

192.168.127.1 voipbox1b voipbox1d

192.168.127.2 voipbox2b voipbox2d

192.168.127.3 activeb actived

192.168.127.4 standbyb standbyd

CAUTION: The host names that end in a, b, c, and d are used internally by Intelligent Mirroring or Call Builder (or both). These names must be present in the /etc/hosts file.

Domain Name

To enable proper operation of the UMS e-mail server (SMTP, POP3, and

System (DNS)

IMAP) you must configure the DNS servers on your network.

Configuration

To configure a DNS server:

 

1Create a host name for the UMS e-mail server.

The domain name of the UMS e-mail server is the host name that you just created, together with the appropriate DNS suffix.

2Bind both the primary and secondary IP address of the e-mail server to the host name that you just created.

If the VCX system is a single-box configuration, you need only bind the one IP address of the system to the host name.

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3Com V7300 manual Domain Name, System DNS, Configuration

V7300 specifications

The 3Com V7300 is a sophisticated network switch designed to cater to the demands of modern enterprise networking. With its robust feature set and advanced capabilities, it is positioned as a critical component in delivering high-performance connectivity.

One of the key features of the 3Com V7300 is its high port density. The switch supports a variety of port configurations, allowing for 10/100/1000 Mbps Ethernet connections. This flexibility ensures that organizations can scale their networks with ease, adapting to growing bandwidth requirements without compromising performance. Additionally, the switch can accommodate both copper and fiber connections, ensuring compatibility with existing infrastructure.

A standout technology integrated into the 3Com V7300 is its support for Layer 3 routing. This allows for intelligent traffic management and enhanced data routing within complex network environments. With Layer 3 functionality, organizations can segment their networks for improved security and performance, as well as enable inter-VLAN routing. This capability is critical for businesses looking to optimize their network efficiency while ensuring secure communication between different network segments.

The V7300 also boasts advanced Quality of Service (QoS) features. This technology prioritizes critical applications and services, ensuring that voice and video traffic receive the bandwidth they require for uninterrupted performance. By implementing QoS policies, organizations can enhance user experience, especially in environments where real-time communications are essential.

Reliability is a cornerstone of the 3Com V7300's design, featuring redundancy options such as dual power supplies and fan units. This ensures that the switch remains operational even in the event of hardware failures, minimizing downtime and maintaining service continuity. The robust management capabilities, including SNMP support, allow IT administrators to monitor the network effectively and respond to issues proactively.

Security features are also a significant consideration with the V7300. It includes access control lists (ACLs), port security, and VLAN support to restrict access and protect sensitive data from unauthorized users. Further, the integration of 802.1X authentication enhances network security by ensuring that only authorized devices can access the network.

In conclusion, the 3Com V7300 stands out as a high-performance network switch suitable for enterprises seeking to future-proof their networking capabilities. With its high port density, Layer 3 routing, advanced QoS, reliability, and robust security measures, it is a solid choice for businesses looking to enhance their network infrastructure.