System Management Commands

Command Mode

Global Configuration

Example

Console#config

Console(config)#ip telnet server

Console(config-line)#

Secure Shell Commands

The Berkley-standard includes remote access tools originally designed for Unix systems. Some of these tools have also been implemented for Microsoft Windows and other environments. These tools, including commands such as rsh (remote shell), and rexec (remote execute), are not secure from hostile attacks.

The Secure Shell (SSH) includes server/client applications intended as a secure replacement for the older Berkley remote access tools. SSH provides remote management access via encrypted paths between the switch and SSH-enabled management station clients. The commands described in this section show how to configure the SSH server. However, you also need to install a SSH client on the management station when using this protocol to configure the switch. When the client contacts the switch via the SSH protocol, the switch generates a public-key that the client uses along with a local user name and password for access authentication.

Note: The switch supports only SSH Version 1.5.

Command

Function

Mode

Pag

 

 

 

e

 

 

 

 

ip ssh server

Enables the SSH server on the switch

GC

4-31

 

 

 

 

ip ssh timeout

Specifies the authentication timeout for the SSH server

GC

4-35

 

 

 

 

ip ssh

Specifies the number of retries allowed by a client

GC

4-33

authentication-retries

 

 

 

disconnect ssh

Terminates an SSH connection

PE

4-33

 

 

 

 

show ip ssh

Displays the status of the SSH server and the configured values

PE

4-34

 

for authentication timeout and retries

 

 

show ssh

Displays the status of current SSH sessions

PE

4-35

 

 

 

 

show users

Shows SSH users, including privilege level and public key type

PE

4-53

 

 

 

 

ip ssh server

Use this command to enable the Secure Shell (SSH) server on this switch. Use the no form to disable this service.

Syntax

[no] ip ssh server

4-31

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Accton Technology VS4512DC manual Secure Shell Commands, Ip ssh server, Syntax No ip ssh server

VS4512DC, VS4512 specifications

Accton Technology is renowned for its innovative networking solutions and has made significant strides in the realm of networking devices with its VS4512 and VS4512DC models. These devices cater primarily to the advanced needs of enterprise and data center environments, providing robust features and cutting-edge technologies that enhance network performance and reliability.

The Accton VS4512 is a high-performance Layer 2+ switch designed for top-of-rack applications in data centers. It boasts a compact 1U design, making it highly efficient for space-constrained environments. One of its standout features is the support for Ethernet Flow Control, which significantly reduces data loss during peak traffic loads. This is essential for businesses that rely on real-time data processing and streaming.

In terms of scalability, the VS4512 supports up to 48 Gigabit Ethernet ports, which can be expanded using four 10 Gigabit SFP+ uplink ports. This flexibility allows enterprises to customize their network architecture to meet their growing demands, whether they are scaling up for more users or enhancing service capabilities.

The VS4512DC, on the other hand, is the DC version tailored for data centers. It offers similar features as the VS4512 but includes enhancements for power efficiency and redundancy, ensuring that operations can continue smoothly even in power outage scenarios. The VS4512DC features dual power supplies and advanced thermal management, allowing for improved heat dissipation and lower operational costs.

Both models support advanced Layer 3 routing capabilities, enabling efficient traffic management across complex networks. They also incorporate features like VLAN segmentation and link aggregation, which facilitate better bandwidth utilization and improved network security.

Security is another cornerstone of these switches, with features such as DHCP snooping, port security, and storm control to mitigate risks associated with unauthorized access and network congestion.

In summary, the Accton Technology VS4512 and VS4512DC switches represent significant advancements in networking technology, equipped with a comprehensive set of features tailored for modern enterprise needs. With their scalability, robust performance, and focus on security, these switches are positioned to meet the challenges of today's fast-paced digital environments, making them a preferred choice for organizations aiming to enhance their network infrastructure.