DNS COMMANDS

DNS Commands

These commands are used to configure Domain Naming System (DNS) services. You can manually configure entries in the DNS domain name to IP address mapping table, configure default domain names, or specify one or more name servers to use for domain name to address translation.

Note that domain name services will not be enabled until at least one name server is specified with the ip name-servercommand and domain lookup is enabled with the ip domain-lookupcommand.

Table 4-74 DNS Commands

Command

Function

Mode

Page

 

 

 

 

ip host

Creates a static host name-to-address mapping

GC

4-287

 

 

 

 

clear host

Deletes entries from the host name-to-address

PE

4-288

 

table

 

 

 

 

 

 

ip domain-name

Defines a default domain name for incomplete

GC

4-288

 

host names

 

 

 

 

 

 

ip domain-list

Defines a list of default domain names for

GC

4-289

 

incomplete host names

 

 

 

 

 

 

ip name-server

Specifies the address of one or more name

GC

4-290

 

servers to use for host name-to-address

 

 

 

translation

 

 

 

 

 

 

ip domain-lookup

Enables DNS-based host name-to-address

GC

4-291

 

translation

 

 

 

 

 

 

show hosts

Displays the static host name-to-address

PE

4-292

 

mapping table

 

 

 

 

 

 

show dns

Displays the configuration for DNS services

PE

4-293

 

 

 

 

show dns cache

Displays entries in the DNS cache

PE

4-293

 

 

 

 

clear dns cache

Clears all entries from the DNS cache

PE

4-294

 

 

 

 

4-286

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SMC Networks SMC6824M manual DNS Commands, 286

SMC6824M specifications

The SMC Networks SMC6824M is a robust and reliable managed switch that caters to the needs of small to mid-sized businesses, as well as enterprise environments. This switch is designed to provide enhanced performance, scalability, and security for network infrastructures that require efficient traffic management and comprehensive control.

One of the key features of the SMC6824M is its 24 10/100/1000BASE-T ports, which offer lightning-fast Ethernet connectivity. These ports are capable of auto-negotiation, allowing devices to automatically adjust their settings for optimal performance, making it easier to integrate various hardware into existing networks. Additionally, the switch includes four Gigabit SFP slots for fiber uplinks, which allow for extended connectivity options and improved network design.

The SMC6824M employs advanced Layer 2 and Layer 3 functionalities, giving network administrators the tools they need to manage their networks effectively. It supports features like VLAN (Virtual Local Area Network) support and Quality of Service (QoS), ensuring efficient bandwidth management and enhanced performance for critical applications. Through VLAN segmentation, it can isolate network traffic for different departments or functions, enhancing security and reducing congestion.

The switch also offers comprehensive network management capabilities through SNMP (Simple Network Management Protocol) and a web-based interface, enabling easy configuration, monitoring, and troubleshooting. The SMC6824M includes support for port mirroring, which is important for diagnostics and monitoring network performance.

Another significant characteristic of the SMC6824M is its redundancy features, which include IEEE 802.1d Spanning Tree Protocol (STP) to prevent loops and provide network resilience. This is essential for maintaining continuous operation, especially in dynamic environments where network availability is critical.

In terms of security, the SMC6824M supports 802.1X port-based authentication, ensuring that only authorized devices gain access to the network. This feature is crucial for protecting sensitive data and maintaining the integrity of the network.

Overall, the SMC Networks SMC6824M is a versatile and feature-rich managed switch that delivers the performance and flexibility required to support growing networks. Its combination of layer management, security features, and user-friendly interface makes it an excellent choice for organizations looking to enhance their network infrastructure.