Interactions Between DHCPv4 Snooping, DHCPv4 Relay and Option 82265
DHCP Snooping Binding Database269
DHCP Trusted Ports270
How the DHCP Snooping Binding Database is Built270
DHCP Snooping Along With DHCP Relay272
DHCP Default Configuration272
Configuring DHCP Work Flow272
Cisco Small Business 300 Series Managed Switch Administration Guide 12
Contents
SSH Client Configuration Through the GUI387
SSH User Authentication387
SSH Server Authentication388
Modifying the User Password on the SSH Server388
Chapter 20: Security: SSH Server390
Overview390
Common Tasks391
SSH Server Configuration Pages392
SSH User Authentication392
SSH Server Authentication393
Chapter 21: Access Control396
Access Control Lists396
Defining MAC-based ACLs398
Adding Rules to a MAC-based ACL399
IPv4-based ACLs401
Defining an IPv4-based ACL401
Adding Rules (ACEs) to an IPv4-Based ACL402
IPv6-Based ACLs405
Adding Rules (ACEs) for an IPv6-Based ACL 406
Defining ACL Binding409
Chapter 22: Quality of Service 412
QoS Features and Components413
QoS Modes413
QoS Workflow414
Configuring QoS - General415
Setting QoS Properties416
Configuring QoS Queues 417
Mapping CoS/802.1p to a Queue418
Mapping DSCP to Queue420
Cisco Small Business 300 Series Managed Switch Administration Guide 13
Contents
Configuring Bandwidth423
Configuring Egress Shaping per Queue425
Configuring VLAN Ingress Rate Limit425
TCP Congestion Avoidance427
QoS Basic Mode427
Workflow to Configure Basic QoS Mode427
Configuring Global Settings428
Interface QoS Settings429
QoS Advanced Mode429
Workflow to Configure Advanced QoS Mode431
Configuring Global Settings431
Configuring Out-of-Profile DSCP Mapping432
Defining Class Mapping434
QoS Policers435
Defining Aggregate Policers436
Configuring a Policy437
Policy Class Maps438
Policy Binding440
Managing QoS Statistics440
Policer Statistics441
Viewing Single Policer Statistics441
Viewing Aggregated Policer Statistics442
Viewing Queues Statistics442
Chapter 23: SNMP446
SNMP Versions and Workflow446
SNMPv1 and v2447
SNMPv3447
SNMP Workflow447
Supported MIBs449
Model OIDs449
SNMP Engine ID450
Cisco Small Business 300 Series Managed Switch Administration Guide 14
Contents
Configuring SNMP Views452
Creating SNMP Groups 453
Managing SNMP Users455
Defining SNMP Communities457
Defining Trap Settings459
Notification Recipients460
Defining SNMPv1,2 Notification Recipients460
Defining SNMPv3 Notification Recipients462
SNMP Notification Filters463
Cisco Small Business 300 Series Managed Switch Administration Guide 15
Contents
Cisco Small Business 300 Series Managed Switch Administration Guide 16
Getting Started
This section provides an introduction to the web-based configuration utility, and
covers the following topics:
•Starting the Web-based Configuration Utility
•Quick Start Device Configuration
•Interface Naming Conventions
1
•Window Navigation
Starting the Web-based Configuration Utility
This section describes how to navigate the web-based switch configuration utility.
If you are using a pop-up blocker, make sure it is disabled.
Browser Restrictions
•If you are using older versions of Internet Explorer, you cannot directly use
an IPv6 address to access the device. You can, however, use the DNS
(Domain Name System) server to create a domain name that contains the
IPv6 address, and then use that domain name in the address bar in place of
the IPv6 address.
•If you have multiple IPv6 interfaces on your management station, use the
IPv6 global address instead of the IPv6 link local address to access the
device from your browser.
Cisco Small Business 300 Series Managed Switch Administration Guide 1
Getting Started
Starting the Web-based Configuration Utility
Launching the Configuration Utility
To open the web-based configuration utility:
STEP 1 Open a Web browser.
STEP 2 Enter the IP address of the device you are configuring in the address bar on the
browser, and then press Enter.
NOTE When the device is using the factory default IP address of 192.168.1.254, its power
LED flashes continuously. When the device is using a DHCP assigned IP address or
an administrator-configured static IP address, the power LED is on solid.
Logging In
1
The default username is cisco and the default password is cisco. The first time
that you log in with the default username and password, you are required to enter
a new password.
NOTE If you have not previously selected a language for the GUI, the language of the Login
page is determined by the language(s) requested by your browser and the
languages configured on your device. If your browser requests Chinese, for
example, and Chinese has been loaded into your device, the Login page is
automatically displayed in Chinese. If Chinese has not been loaded into your
device, the Login page appears in English.
The languages loaded into the device have a language and country code (en-US,
en-GB and so on). For the Login page to be automatically displayed in a particular
language, based on the browser request, both the language and country code of
the browser request must match those of the language loaded on the device. If the
browser request contains only the language code without a country code (for
example: fr). The first embedded language with a matching language code is
taken (without matching the country code, for example: fr_CA).
To log in to the device configuration utility:
STEP 1 Enter the username/password. The password can contain up to 64 ASCII
characters. Password-complexity rules are described in the Setting Password
Complexity Rules section of the Configuring Security chapter.
STEP 2 If you are not using English, select the desired language from the Language drop-
down menu. To add a new language to the device or update a current one, refer to
the Upgrade/Backup Firmware/Language section.
Cisco Small Business 300 Series Managed Switch Administration Guide 2
1
Getting Started
Starting the Web-based Configuration Utility
STEP 3 If this is the first time that you logged on with the default user ID (cisco) and the
default password (cisco) or your password has expired, the Change Password
Page appears. See Password Expiration for additional information.
STEP 4 Choose whether to select Disable Password Complexity Enforcement or not.
For more information on password complexity, see the Setting Password
Complexity Rules section.
STEP 5 Enter the new password and click Apply.
When the login attempt is successful, the Getting Started page appears.
If you entered an incorrect username or password, an error message appears and
the Login page remains displayed on the window. If you are having problems
logging in, please see the Launching the Configuration Utility section in the
Administration Guide for additional information.
Select Don’t show this page on startup to prevent the Getting Started page from
being displayed each time that you log on to the system. If you select this option,
the System Summary page is opened instead of the Getting Started page.
HTTP/HTTPS
You can either open an HTTP session (not secured) by clicking Log In, or you can
open an HTTPS (secured) session, by clicking Secure Browsing (HTTPS). You are
asked to approve the logon with a default RSA key, and an HTTPS session is
opened.
NOTE There is no need to input the username/password prior to clicking the Secure
Browsing (HTTPS) button.
For information on how to configure HTTPS, see SSL Server.
Password Expiration
The New Password page appears:
•The first time you access the device with the default username cisco and
password cisco. This page forces you to replace the factory default
password.
•When the password expires, this page forces you to select a new
password.
3Cisco Small Business 300 Series Managed Switch Administration Guide
Getting Started
!
Starting the Web-based Configuration Utility
Logging Out
By default, the application logs out after ten minutes of inactivity. You can change
this default value as described in the Defining Idle Session Timeout section.
CAUTION Unless the Running Configuration is copied to the Startup Configuration, rebooting
the device will remove all changes made since the last time the file was saved.
Save the Running Configuration to the Startup Configuration before logging off to
preserve any changes you made during this session.
A flashing red X icon to the left of the Save application link indicates that Running
Configuration changes have not yet been saved to the Startup Configuration file.
The flashing can be disabled by clicking on the Disable Save Icon Blinking button
on the Copy/Save Configuration page
1
When the device auto-discovers a device, such as an IP phone (see What is a
Smartport), and it configures the port appropriately for the device. These
configuration commands are written to the Running Configuration file. This causes
the Save icon to begin blinking when the you log on even though you did not make
any configuration changes.
When you click Save, the Copy/Save Configuration page appears. Save the
Running Configuration file by copying it to the Startup Configuration file. After this
save, the red X icon and the Save application link are no longer displayed.
To logout, click Logout in the top right corner of any page. The system logs out of
the device.
When a timeout occurs or you intentionally log out of the system, a message
appears and the Login page appears, with a message indicating the logged-out
state. After you log in, the application returns to the initial page.
The initial page displayed depends on the “Do not show this page on startup”
option in the Getting Started page. If you did not select this option, the initial page
is the Getting Started page. If you did select this option, the initial page is the
System Summary page.
Cisco Small Business 300 Series Managed Switch Administration Guide 4
1
Quick Start Device Configuration
To simplify device configuration through quick navigation, the Getting Started
page provides links to the most commonly used pages.
Configure Port MirroringPort and VLAN Mirroring page
There are two hot links on the Getting Started page that take you to Cisco web
pages for more information. Clicking on the Support link takes you to the device
product support page, and clicking on the Forums link takes you to the Small
Business Support Community page.
5Cisco Small Business 300 Series Managed Switch Administration Guide
Getting Started
Interface Naming Conventions
Interface Naming Conventions
Within the GUI, interfaces are denoted by concatenating the following elements:
•Type of interface: The following types of interfaces are found on the various
types of devices:
-Fast Ethernet (10/100 bits)—These are displayed as FE.
-Gigabit Ethernet ports (10/100/1000 bits)—These are displayed as
GE.
-LAG (Port Channel)—These are displayed as LAG.
-VLAN—These are displayed as VLAN.
-Tunnel —These are displayed as Tunnel.
1
•Interface Number: Port, LAG, tunnel or VLAN ID
Cisco Small Business 300 Series Managed Switch Administration Guide 6
1
Window Navigation
This section describes the features of the web-based switch configuration utility.
Application Header
The Application Header appears on every page. It provides the following
application links:
Application Links
Getting Started
Window Navigation
Application Link
Name
UsernameDisplays the name of the user logged on to the device. The
Description
A flashing red X icon displayed to the left of the Save
application link indicates that Running Configuration
changes have been made that have not yet been saved to
the Startup Configuration file. The flashing of the red X can
be disabled on the Copy/Save Configuration page.
Click Save to display the Copy/Save Configuration page.
Save the Running Configuration file by copying it to the
Startup Configuration file type on the device. After this
save, the red X icon and the Save application link are no
longer displayed. When the device is rebooted, it copies
the Startup Configuration file type to the Running
Configuration and sets the device parameters according
to the data in the Running Configuration.
default username is cisco. (The default password is cisco).
7Cisco Small Business 300 Series Managed Switch Administration Guide
Getting Started
Window Navigation
1
Application Links (Continued)
Application Link
Name
Language MenuThis menu provides the following options:
Description
•Select a language: Select one of the languages that
appear in the menu. This language will be the webbased configuration utility language.
•Download Language: Add a new language to the
device.
•Delete Language: Deletes the second language on
the device. The first language (English) cannot be
deleted.
•Debug: Used for translation purposes. If you select
this option, all web-based configuration utility labels
disappear and in their place are the IDs of the
strings that correspond to the IDs in the language
file.
NOTE To upgrade a language file, use the Upgrade/
Backup Firmware/Language page.
LogoutClick to log out of the web-based switch configuration
utility.
AboutClick to display the device name and device version
number.
HelpClick to display the online help.
The SYSLOG Alert Status icon appears when a SYSLOG
message, above the critical severity level, is logged. Click
the icon to open the RAM Memory page. After you access
this page, the SYSLOG Alert Status icon is no longer
displayed. To display the page when there is not an active
SYSLOG message, Click Status and Statistics > View Log > RAM Memory.
Cisco Small Business 300 Series Managed Switch Administration Guide 8
1
Getting Started
Window Navigation
Management Buttons
The following table describes the commonly-used buttons that appear on various
pages in the system.
Management Buttons
Button NameDescription
Use the pull-down menu to configure the number of
entries per page.
Indicates a mandatory field.
AddClick to display the related Add page and add an entry to a
table. Enter the information and click Apply to save it to the
Running Configuration. Click Close to return to the main
page. Click Save to display the Copy/Save Configuration
page and save the Running Configuration to the Startup
Configuration file type on the device.
ApplyClick to apply changes to the Running Configuration on the
device. If the device is rebooted, the Running
Configuration is lost, unless it is saved to the Startup
Configuration file type or another file type. Click Save to
display the Copy/Save Configuration page and save the
Running Configuration to the Startup Configuration file
type on the device.
CancelClick to reset changes made on the page.
Clear All
Interfaces
Counters
Clear Interface
Counters
Clear LogsClears log files.
Clear TableClears table entries.
CloseReturns to main page. If any changes were not applied to
Click to clear the statistic counters for all interfaces.
Click to clear the statistic counters for the selected
interface.
the Running Configuration, a message appears.
9Cisco Small Business 300 Series Managed Switch Administration Guide
Getting Started
Window Navigation
1
Management Buttons (Continued)
Button NameDescription
Copy SettingsA table typically contains one or more entries containing
configuration settings. Instead of modifying each entry
individually, it is possible to modify one entry and then
copy the selected entry to multiple entries, as described
below:
1. Select the entry to be copied. Click Copy Settings to
display the popup.
2. Enter the destination entry numbers in the to field.
3. Click Apply to save the changes and click Close to
return to the main page.
DeleteAfter selecting an entry in the table, click Delete to
remove.
DetailsClick to display the details associated with the entry
selected.
EditSelect the entry and click Edit. The Edit page appears,
and the entry can be modified.
1. C li ck Apply to save the changes to the Running
Configuration.
2. Click Close to return to the main page.
GoEnter the query filtering criteria and click Go. The results
are displayed on the page.
Te stClick Te s t to perform the related tests.
Cisco Small Business 300 Series Managed Switch Administration Guide 10
1
Getting Started
Window Navigation
11Cisco Small Business 300 Series Managed Switch Administration Guide
Status and Statistics
This section describes how to view device statistics.
It covers the following topics:
•Viewing Ethernet Interfaces
•Viewing Etherlike Statistics
•Viewing GVRP Statistics
2
•Viewing 802.1X EAP Statistics
•Viewing TCAM Utilization[
•Managing RMON
Viewing Ethernet Interfaces
The Interface page displays traffic statistics per port. The refresh rate of the
information can be selected.
This page is useful for analyzing the amount of traffic that is both sent and
received and its dispersion (Unicast, Multicast, and Broadcast).
To display Ethernet statistics and/or set the refresh rate:
STEP 1 Click Status and Statistics > Interface.
STEP 2 Enter the parameters.
•Interface—Select the type of interface and specific interface for which
Ethernet statistics are to be displayed.
•Refresh Rate—Select the time period that passes before the interface
Ethernet statistics are refreshed. The available options are:
-No Refresh—Statistics are not refreshed.
Cisco Small Business 300 Series Managed Switch Administration Guide 12
2
Status and Statistics
Viewing Etherlike Statistics
-15 Sec—Statistics are refreshed every 15 seconds.
-30 Sec—Statistics are refreshed every 30 seconds.
-60 Sec—Statistics are refreshed every 60 seconds.
The Receive Statistics area displays information about incoming packets.
•Tot al By te s ( O ct et s )—Octets received, including bad packets and FCS
•Click Clear Interface Counters to clear counters for the interface displayed.
•Click View All Interfaces Statistics to see all ports on a single page.
Viewing Etherlike Statistics
The Etherlike page displays statistics per port according to the Etherlike MIB
standard definition. The refresh rate of the information can be selected. This page
provides more detailed information regarding errors in the physical layer (Layer 1),
which might disrupt traffic.
To view Etherlike Statistics and/or set the refresh rate:
13Cisco Small Business 300 Series Managed Switch Administration Guide
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