3Com V7300 manual Sample file vcx.wan.3com.com, Verifying DNS Configuration

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Domain Name System (DNS) Configuration

15

Sample file "vcx.wan.3com.com"

$TTL 86400

@IN SOA vcx.wan.3com.com. root.vcx.wan.3com.com. ( 200210210; serial, todays date + todays serial #

8H; refresh, seconds 2H; retry, seconds 1W; expire, seconds

1D ); minimum, seconds NS galaxy

High light this MX record entry

MX10 umsemail

TXT "Voice

Core eXchange, 3Com Corporation"

localhost

-A

127.0.0.1

umsemail

A

192.168.126.1

 

A

192.168.126.2

voipbox1

-A

192.168.126.1

voipbox2

-A

191.168.126.2

Verifying DNS Configuration

To verify that the DNS server is properly configured for UMS:

1On a PC where you run the e-mail client, open a command window.

2Enter this command:

nslookup umsemail

The output from the command should look something like this:

E:\UMS>nslookup umsemail

Server: galaxy.vcx.wan.3com.com

Address: 192.168.126.1

Name: umsemail.vcx.wan.3com.com

Addresses: 192.168.126.1 192.168.126.2

In this example, the domain name is resolved to two IP addresses, one for the primary server and one for the secondary server.

3Enter this command:

ping umsemail

Continuing with the information in this example, you would see replies from umsemail.vcx.wan.3com.com.

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Contents VCX V7000 IP Telephony Solution System Release 3Com Corporation 350 Campus Drive Marlborough, MA Contents Index About this Guide AssumptionsConventions Documentation RelatedExample About this Guide Prerequisites Initial ConfigurationOverview HardwareExamples in this section are based on these assumptions IP Configuration Initial Configuration Configuration Domain NameSystem DNS Sample named.conf file on the DNS server Mail Server Host Name umsemailSample file vcx.wan.3com.com Verifying DNS ConfigurationSecure Shell SSH CommandsEnabling Secure Copy SCPAny user can run the ntpq command Initial Configuration Verify the Primary Server InstallationInstallation Primary ServerSecondary Server Secondary ServerIntelligent Switching Between Active and Standby States Intelligent Mirroring Active/Standby Policy Installation Operation OperationVerifying Intelligent MirroringIf the databases are synchronized, you see this message Diffmsg Run this command on the other server Index Synchronizing Databases

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.