CLI (Command Line Interface)

Secure Shell Commands

Command

Function

 

 

ip ssh server

Syntax:

This command enables

[no] ip ssh server

the Secure Shell (SSH)

Default Setting: Disabled

server on this switch.

Command Mode: Global Configuration

Use the no form to disable

Command Usage:

this service.

• The SSH server supports up to four client sessions. The maximum number of

 

 

client sessions includes both current Telnet sessions and SSH sessions.

 

• The SSH server uses DSA or RSA for key exchange when the client first

 

establishes a connection with the switch, and then negotiates with the client to

 

select either DES (56-bit) or 3DES (168-bit) for data encryption.

 

• You must generate the host key before enabling the SSH server.

 

Example:

 

Console#ip ssh crypto host-key generate dsa

 

Console#configure

 

Console(config)#ip ssh server

 

Console(config)#

 

 

ip ssh timeout

Syntax:

This command configures

ip ssh timeout seconds

the timeout for the SSH

no ip ssh timeout

• seconds – The timeout for client response during SSH negotiation.

server.

Range: 1-120

Use the no form to restore

Default Setting: 10 seconds

the default setting.

 

Command Mode: Global Configuration

 

Command Usage: The timeout specifies the interval the switch will wait for a

 

response from the client during the SSH negotiation phase. Once an SSH session

 

has been established, the timeout for user input is controlled by the exec-timeout

 

command for vty sessions.

 

Example:

 

Console(config)#ip ssh timeout 60

 

Console(config)#

 

 

ip ssh authentication-

Syntax:

retries

ip ssh authentication-retries count

This command configures

no ip ssh authentication-retries

• count – The number of authentication attempts permitted after which the

the number of times the

interface is reset.

SSH server attempts to

Range: 1-5

reauthenticate a user.

Default Setting: 3

Use the no form to restore

the default setting.

Command Mode: Global Configuration

 

Example:

 

Console(config)#ip ssh authentication-retires 2

 

Console(config)#

 

 

ip ssh server-key size

Syntax:

This command sets the

ip ssh server-key size key-size

SSH server key size.

no ip ssh server-key size

key-size – The size of server key.

Use the no form to restore

the default setting.

Range: 512-896 bits

Default Setting: 768 bits

 

 

Command Mode: Global Configuration

 

Command Usage:

 

• The server key is a private key that is never shared outside the switch.

 

• The host key is shared with the SSH client, and is fixed at 1024 bits.

 

Example:

 

Console(config)#ip ssh server-key size 512

 

Console(config)#

 

 

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NXA-ENET24 - Software Management Guide

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AMX NXA-ENET24 manual Secure Shell Commands, Ip ssh timeout Syntax, Ip ssh authentication Syntax Retries

NXA-ENET24 specifications

The AMX NXA-ENET24 is a versatile and powerful networked control interface designed to meet the growing demands of modern AV systems. This network switch offers an exceptional combination of reliability, performance, and scalability, making it an ideal choice for professional environments such as conference rooms, educational facilities, and control rooms.

One of the key features of the NXA-ENET24 is its 24-port configuration, allowing for extensive connectivity options. Each port supports 10/100/1000 Mbps speeds, ensuring that high bandwidth applications are handled with ease. Additionally, the switch incorporates advanced auto-negotiation technology, which automatically configures the optimal speed and duplex mode for connected devices. This ensures seamless connectivity and minimizes the risk of network disruptions.

The NXA-ENET24 is designed with advanced management capabilities, including support for VLANs, which helps to segment network traffic for enhanced security and performance. Network administrators can easily create virtual local area networks to optimize traffic flow and reduce congestion. This feature is particularly beneficial in environments where multiple AV systems operate concurrently.

Another significant characteristic of the NXA-ENET24 is its support for Power over Ethernet, or PoE. This feature enables the switch to deliver electrical power alongside data through the network cables. As a result, devices such as IP cameras, VoIP phones, and wireless access points can be powered directly from the switch, simplifying deployment and reducing the need for additional power sources.

Monitoring and management of the switch are made easier through a user-friendly interface. The NXA-ENET24 supports SNMP for network management, allowing users to monitor performance metrics, configure settings, and receive alerts in case of issues. This level of oversight is crucial for maintaining the stability of AV systems in mission-critical applications.

Durability is another hallmark of the NXA-ENET24 design. The switch features a robust chassis that is engineered to withstand the rigors of professional use. With cooling mechanisms in place and a fanless design, the NXA-ENET24 operates quietly and efficiently, making it suitable for environments where noise is a concern.

In conclusion, the AMX NXA-ENET24 is a powerful, reliable, and feature-rich network switch that effectively supports modern AV applications. With its extensive connectivity options, advanced management capabilities, PoE support, and durable design, it is an excellent choice for integrators and organizations looking to optimize their network infrastructure.