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Cisco SF200-24 User Manual

Cisco SF200-24
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System Time
Adding an SNTP Server
Cisco Small Business 200 1.1 Series Smart Switch Administration Guide 39
5
Adding an SNTP Server
Up to eight SNTP servers can be configured. In addition to configuring SNTP
server(s), enable this feature by using the
SNTP Settings
page.
NOTE To specify an SNTP server by name, you must first configure DNS server(s) on the
switch (see the Defining DNS Servers section).
The switch supports the following modes:
• Broadcast—The SNTP server broadcasts the time, and the switch listens to
these broadcasts. When the switch is in this mode, there is no need to
define a Unicast SNTP server.
• Unicast SNTP Server Mode—The switch sends Unicast queries to the list of
manually-configured SNTP servers, and waits for a response.
The switch supports having both modes active at the same time and selects the
best source of the parameters according to the closest stratum (distance from the
reference clock.).
To add an SNTP server:
STEP 1 Click Administration > Time Settings > SNTP Settings. The
SNTP Settings
page
opens.
This page displays the following information for each Unicast SNTP server:
• SNTP Server—SNTP server IP address. Up to eight SNTP servers can be
defined. The preferred server, or hostname, is chosen according to its
stratum level.
• Poll Interval—Displays whether polling is enabled or disabled.
• Authentication Key ID—Key Identification used to communicate between
the SNTP server and switch.
• Stratum Level—Distance from the reference clock expressed as a
numerical value. An SNTP server cannot be the primary server (stratum level
1) unless polling interval is enabled.
• Status—SNTP server status. The possible options are:
- Up—SNTP server is currently operating normally.
- Down—SNTP server is currently not available.
- Unknown—SNTP server is currently being searched for by the switch.

Table of Contents

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Cisco SF200-24 Specifications

General IconGeneral
ModelSF200-24
Switching Capacity8.8 Gbps
LayerLayer 2
Form FactorRack-mountable
Power SupplyInternal
MAC Address Table Size8000 entries
Switch TypeManaged
Power over Ethernet (PoE)No
StackableNo
Jumbo Frame Support9216 bytes
VLAN SupportYes
Quality of Service (QoS)4 hardware queues
Ports24

Summary

Getting Started

Logging In

Details on accessing the switch's configuration utility with username and password.

Quick Start Switch Configuration

Provides quick navigation links to commonly used pages for simplified configuration.

Managing System Logs

Setting System Log Settings

Covers enabling/disabling logging and selecting log message severity levels.

Setting Remote Logging Settings

Details configuring remote SYSLOG servers for receiving log messages.

Managing System Files

Upgrade/Backup Firmware/Language

Guides on upgrading firmware, boot code, or managing language files.

Downloading or Backing-up a Configuration or Log

Explains backing up configuration file types or flash logs to another device.

System Time

Configuring System Time

Guides on setting current time, time zone, and Daylight Savings Time (DST).

General Administrative Information and Operations

Rebooting the Switch

Explains how to reboot the switch, including factory default reset.

Port Management

Setting Basic Port Configuration

Configures global and per-port settings like speed, duplex, and status.

Configuring Link Aggregation

Explains how to configure Link Aggregation Groups (LAGs) to bundle ports.

Managing Device Diagnostics

Testing Copper Ports

Displays results of integrated cable tests performed on copper cables.

Managing Power-over-Ethernet Devices

Configuring PoE Properties

Configures Port Limit or Class Limit PoE modes and generates PoE traps.

Configuring the PoE Power, Priority, and Class

Sets PoE power limits, priorities, and classes for ports.

VLAN Management

Voice VLAN

Explains placing voice devices in the same VLAN for communication.

Configuring Voice VLAN Properties

Sets voice VLAN ID, QoS, and dynamic modes like Telephony OUI or Auto Voice VLAN.

Configuring the Spanning Tree Protocol

Configuring STP Status and Global Settings

Enables STP/RSTP and configures global parameters like operation mode and BPDU handling.

Managing MAC Address Tables

Configuring Static MAC Addresses

Assigns static MAC addresses to specific interfaces and VLANs.

Configuring Multicast Forwarding

Defining Multicast Properties

Configures Bridge Multicast filtering status and forwarding methods.

Configuring IP Information

Management and IP Interfaces

Configures switch IP addresses manually or via DHCP server.

Defining an IPv4 Interface

Sets the IPv4 switch management IP address and default gateway.

Configuring ARP

Manages the switch's ARP table for IP to MAC address resolution.

Configuring Security

Defining Users

Guides on adding new users and setting their access permissions.

Setting Password Complexity Rules

Enforces password complexity requirements and aging policies.

Configuring RADIUS Parameters

Sets up RADIUS servers for centralized 802.1X or MAC-based network access control.

Configuring Management Access Authentication

Assigns authentication methods for HTTP/HTTPS sessions (local or RADIUS).

Defining Access Profiles

Determines how users are authenticated and authorized via access methods.

Defining Storm Control

Limits the number of frames entering the switch to prevent traffic storms.

Configuring Port Security

Limits port access to users with specific MAC addresses for enhanced security.

Configuring 802.1X

Implements port-based network access control using IEEE 802.1x standard.

Defining 802.1X Properties

Globally enables 802.1X and defines port authentication methods.

Defining 802.1X Port Authentication

Configures 802.1X parameters for each port, including authorization state.

Configuring Quality of Service

Configuring QoS - General

Guides on enabling QoS and selecting the trust mode for traffic.

Configuring QoS Queues

Configures egress queues for traffic handling using Strict Priority or WRR.

Configuring Bandwidth

Defines ingress rate limits and egress shaping rates for traffic management.

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