Cisco 500 Series Stackable Managed Switch
Administration Guide
2
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Cisco 500 Series Stackable Managed Switch Administration Guide 2
Contents
Chapter 1: Getting Started10
Starting the Web-based Configuration Utility10
Quick Start Device Configuration14
Interface Naming Conventions 15
Differences Between 500 Devices<500>15
Window Navigation17
Chapter 2: Status and Statistics22
System Summary 22
Ethernet Interfaces22
Etherlike Statistics24
GVRP Statistics25
802.1X EAP Statistics 26
ACL Statistics27
TCAM Utilization28
Health29
RMON29
View Log37
Chapter 3: Administration: System Log38
Setting System Log Settings38
Setting Remote Logging Settings40
Viewing Memory Logs42
Chapter 4: Administration: File Management44
System Files44
Upgrade/Backup Firmware/Language47
Active Image 51
Download/Backup Configuration/Log52
Configuration Files Properties58
Cisco 500 Series Stackable Managed Switch Administration Guide 1
Contents
Copy/Save Configuration59
Auto Configuration/Image Update via DHCP60
70
Chapter 5: Administration: Stack Management71
Overview71
Types of Units in Stack73
Stack Topology74
Unit ID Assignment76
Master Selection Process78
Stack Changes78
Unit Failure in Stack80
Software Auto Synchronization in Stack82
Stack Unit Mode82
Stack Ports86
Default Configuration94
Interactions With Other Features94
System Modes94
Chapter 6: Administration100
Device Models101
System Settings103
Console Settings (Autobaud Rate Support)106
Management Interface107
System Mode and Stack Management107
User Accounts107
Defining Idle Session Timeout 107
Time Settings108
System Log108
File Management108
Cisco 500 Series Stackable Managed Switch Administration Guide 2
Contents
Rebooting the Device 108
Routing Resources110
Health114
Diagnostics116
Discovery - Bonjour116
Discovery - LLDP117
Discovery - CDP117
Ping117
Traceroute119
Chapter 7: Administration: Time Settings122
System Time Options123
SNTP Modes124
Configuring System Time125
Chapter 8: Administration: Diagnostics 136
Copper Ports Tests136
Displaying Optical Module Status138
Configuring Port and VLAN Mirroring140
Viewing CPU Utilization and Secure Core Technology141
Chapter 9: Administration: Discovery144
Bonjour144
LLDP and CDP146
Configuring LLDP147
Configuring CDP168
CDP Statistics176
Chapter 10: Port Management178
Configuring Ports178
Cisco 500 Series Stackable Managed Switch Administration Guide 3
Contents
Loopback Detection184
Link Aggregation186
UDLD194
PoE194
Configuring Green Ethernet194
Chapter 11: Port Management: Unidirectional Link Detection202
UDLD Overview202
UDLD Operation203
Usage Guidelines205
Dependencies On Other Features206
Default Settings and Configuration206
Before You Start207
Common UDLD Tasks207
Configuring UDLD208
Chapter 12: Smartport212
Overview213
What is a Smartport214
Smartport Types214
Smartport Macros216
Macro Failure and the Reset Operation218
How the Smartport Feature Works218
Auto Smartport219
Error Handling223
Default Configuration223
Relationships with Other Features and Backwards Compatibility224
Common Smartport Tasks224
Configuring Smartport Using The Web-based Interface226
Built-in Smartport Macros231
Cisco 500 Series Stackable Managed Switch Administration Guide 4
Contents
Chapter 13: Port Management: PoE 244
PoE on the Device244
PoE Properties247
PoE Settings248
Chapter 14: VLAN Management252
Overview252
Regular VLANs261
Private VLAN Settings269
GVRP Settings270
VLAN Groups271
Voice VLAN276
Access Port Multicast TV VLAN289
Customer Port Multicast TV VLAN292
Chapter 15: Spanning Tree296
STP Flavors296
STP Status and Global Settings297
Spanning Tree Interface Settings299
Rapid Spanning Tree Settings301
Multiple Spanning Tree304
MSTP Properties304
VLANs to a MSTP Instance 305
MSTP Instance Settings306
MSTP Interface Settings307
Chapter 16: Managing MAC Address Tables310
Static MAC Addresses311
Dynamic MAC Addresses312
Reserved MAC Addresses313
Cisco 500 Series Stackable Managed Switch Administration Guide 5
Contents
Chapter 17: Multicast314
Multicast Forwarding314
Multicast Properties320
MAC Group Address320
IP Multicast Group Addresses322
IPv4 Multicast Configuration324
IPv6 Multicast Configuration330
IGMP/MLD Snooping IP Multicast Group336
Multicast Router Ports337
Forward All338
Unregistered Multicast338
Chapter 18: IP Configuration340
Overview340
IPv4 Management and Interfaces344
DHCP Server366
IPv6 Management and Interfaces375
Domain Name398
Chapter 19: IP Configuration: RIPv2403
Overview403
How Rip Operates on the Device404
Configuring RIP409
Chapter 20: IP Configuration: VRRP417
Overview417
Configurable Elements of VRRP421
Configuring VRRP424
Chapter 21: Security428
Cisco 500 Series Stackable Managed Switch Administration Guide 6
Contents
Defining Users429
Configuring TACACS+432
Configuring RADIUS437
Key Management442
Management Access Method445
Management Access Authentication450
Secure Sensitive Data Management452
SSL Server452
SSH Server454
SSH Client455
Configuring TCP/UDP Services455
Defining Storm Control456
Configuring Port Security 457
802.1X460
Denial of Service Prevention 460
DHCP Snooping470
IP Source Guard470
ARP Inspection474
First Hop Security480
Chapter 22: Security: 802.1X Authentication481
Overview of 802.1X481
Authenticator Overview484
Common Tasks494
802.1X Configuration Through the GUI495
Defining Time Ranges507
Authentication Method and Port Mode Support508
Chapter 23: Security: IPv6 First Hop Security511
IPv6 First Hop Security Overview512
Cisco 500 Series Stackable Managed Switch Administration Guide 7
Contents
Router Advertisement Guard516
Neighbor Discovery Inspection516
DHCPv6 Guard517
Neighbor Binding Integrity518
IPv6 Source Guard521
Attack Protection522
Policies, Global Parameters and System Defaults523
Common Tasks525
Default Settings and Configuration527
Before You Start527
Configuring IPv6 First Hop Security through Web GUI528
Chapter 24: Security: SSH Client546
Secure Copy (SCP) and SSH546
Protection Methods547
SSH Server Authentication549
SSH Client Authentication550
Before You Begin551
Common Tasks551
SSH Client Configuration Through the GUI552
Chapter 25: Security: SSH Server557
Overview557
Common Tasks558
SSH Server Configuration Pages559
Chapter 26: Security: Secure Sensitive Data Management562
Introduction 562
SSD Rules563
SSD Properties568
Cisco 500 Series Stackable Managed Switch Administration Guide 8
Contents
Configuration Files571
SSD Management Channels576
Menu CLI and Password Recovery 576
Configuring SSD577
Chapter 27: Access Control580
Access Control Lists580
MAC-based ACLs584
IPv4-based ACLs586
IPv6-Based ACLs591
ACL Binding594
Chapter 28: Quality of Service 598
QoS Features and Components599
Configuring QoS - General602
QoS Basic Mode615
QoS Advanced Mode617
Managing QoS Statistics628
Chapter 29: SNMP632
SNMP Versions and Workflow632
Model OIDs635
SNMP Engine ID636
Configuring SNMP Views638
Creating SNMP Groups 639
Managing SNMP Users641
Defining SNMP Communities643
Defining Trap Settings645
Notification Recipients646
SNMP Notification Filters650
Cisco 500 Series Stackable Managed Switch Administration Guide 9
Getting Started
DateUpdated ByComment
This section provides an introduction to the web-based configuration utility, and
covers the following topics:
1
No changes for Nikola 1.4
•Starting the Web-based Configuration Utility
•Quick Start Device Configuration
•Interface Naming Conventions
•Differences Between 500 Devices<500>
•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 IPv6 interfaces on your management station, use the IPv6 global
address and not the IPv6 link local address to access the device from your
browser.
Cisco 500 Series Stackable Managed Switch Administration Guide10
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
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 Setting Password
Complexity Rules.
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, see
Upgrade/Backup Firmware/Language.
11Cisco 500 Series Stackable Managed Switch Administration Guide
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.
1
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 is displayed in the following cases:
•The first time that 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.
Cisco 500 Series Stackable Managed Switch Administration Guide12
1
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 removes 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
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 l o g o u t , c li ck 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 is
displayed 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.
13Cisco 500 Series Stackable Managed Switch Administration Guide
Getting Started
Quick Start Device Configuration
Quick Start Device Configuration
To simplify device configuration through quick navigation, the Getting Started
page provides links to the most commonly used pages.
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 Support
Community page.
Cisco 500 Series Stackable Managed Switch Administration Guide14
Create MAC Based ACLMAC Based ACL page
Create IP Based ACLIPv4 Based ACL page
Configure QoSQoS Properties page
Configure Port MirroringPort and VLAN Mirroring page
1
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.
-<500>Ten Gigabit Ethernet ports (10000 bits)—These are displayed
as XG.
-LAG (Port Channel)—These are displayed as LAG.
Getting Started
Interface Naming Conventions
-VLAN—These are displayed as VLAN.
-Tunnel —These are displayed as Tunnel.
•<500>Unit Number—Number of the unit in the stack. In standalone mode
this is always 1.
•<500>Slot Number—The slot number is either 1 or 2.
•Interface Number: Port, LAG, tunnel or VLAN ID
Differences Between 500 Devices<500>
This guide is relevant for both Sx500, SG500X,SG500XG and ESW2-550X
devices. Notes are provided when a feature is relevant for one but not all of these
devices.
The following summarizes the differences between these devices:
•The RIP and VRRP features are only supported on SG500X, SG500XG, and
ESW2-550X devices, running in standalone mode and in advanced hybrid
stack of SG500X and Sx500 devices - see Administration: Stack
Management for more details).
•TCAM size, see TCAM Utilization
•Stack ports are different on these devices. See Default Stack and
Network Ports.
15Cisco 500 Series Stackable Managed Switch Administration Guide
Getting Started
Differences Between 500 Devices<500>
•Port speed availability per cable types are different on these devices. See
Cables Types.
•Enabling IPv4 routing is done differently in the devices, as follows:
-SG500XSG500XG/ESW2-550X—IPv4 routing must be enabled in the
-Sx500—When the device is switched from Layer 2 to Layer 3 system
1
IPv4 Interface page.
mode, IPv4 routing is automatically enabled.
Cisco 500 Series Stackable Managed Switch Administration Guide16
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:
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).
17Cisco 500 Series Stackable Managed Switch Administration Guide
Getting Started
Window Navigation
1
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 500 Series Stackable Managed Switch Administration Guide18
1
Getting Started
Window Navigation
Management Buttons
The following table describes the commonly-used buttons that appear on various
pages in the system.
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.
19Cisco 500 Series Stackable Managed Switch Administration Guide
Getting Started
Window Navigation
1
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.
RefreshClich Refresh to refresh the counter values.
Te stClick Te s t to perform the related tests.
Cisco 500 Series Stackable Managed Switch Administration Guide20
1
Getting Started
Window Navigation
21Cisco 500 Series Stackable Managed Switch Administration Guide
Status and Statistics
This section describes how to view device statistics.
It covers the following topics:
•System Summary
•Ethernet Interfaces
•Etherlike Statistics
2
•GVRP Statistics
•802.1X EAP Statistics
•ACL Statistics
•TCAM Utilization
•Health
•RMON
•View Log
System Summary
See System Settings.
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).
Cisco 500 Series Stackable Managed Switch Administration Guide22
2
Status and Statistics
Ethernet Interfaces
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 Receive Statistics area displays information about incoming packets.
•Tot al B y te s (O ct ets )—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.
23Cisco 500 Series Stackable Managed Switch Administration Guide
Status and Statistics
Etherlike Statistics
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)
that might disrupt traffic.
To view Etherlike Statistics and/or set the refresh rate:
STEP 1 Click Status and Statistics > Etherlike.
STEP 2 Enter the parameters.
•Interface—Select the type of interface and specific interface for which
2
Ethernet statistics are to be displayed.
•Refresh Rate—Select the amount of time that passes before the Etherlike
statistics are refreshed.
The fields are displayed for the selected interface.
•Frame Check Sequence (FCS) Errors—Received frames that failed the
CRC (cyclic redundancy checks).
•Single Collision Frames—Frames that were involved in a single collision,
but were successfully transmitted.
•Late Collisions—Collisions that have been detected after the first 512 bits
of data.
•Excessive Collisions—Transmissions rejected due to excessive collisions.
•Oversize Packets—Packets greater than 2000 octets received.
•Internal MAC Receive Errors—Frames rejected because of receiver errors.
•Pause Frames Received—Received flow control pause frames.
•Pause Frames Transmitted—Flow control pause frames transmitted from
the selected interface.
To clear statistics counters:
•Click Clear Interface Counters to clear the selected interfaces counters.
•Click View All Interfaces Statistics to see all ports on a single page.
Cisco 500 Series Stackable Managed Switch Administration Guide24
2
GVRP Statistics
The GVRP page displays information regarding GARP VLAN Registration Protocol
(GVRP) frames that were sent or received from a port. GVRP is a standards-based
Layer 2 network protocol, for automatic configuration of VLAN information on
switches. It is defined in the 802.1ak amendment to 802.1Q-2005.
GVRP statistics for a port are only displayed if GVRP is enabled globally and on
the port. See the GVRP page.
To view GVRP statistics and/or set the refresh rate:
STEP 1 Click Status and Statistics > GVRP.
STEP 2 Enter the parameters.
Status and Statistics
GVRP Statistics
•Interface—Select the specific interface for which GVRP statistics are to be
displayed.
•Refresh Rate—Select the time period that passes before the GVRP
statistics page is refreshed.
The Attribute Counter block displays the counters for various types of packets per
interface.
25Cisco 500 Series Stackable Managed Switch Administration Guide
Status and Statistics
802.1X EAP Statistics
To clear statistics counters:
•Click Clear Interface Counters to clear the selected counters.
•Click View All Interfaces Statistics to see all ports on a single page.
802.1X EAP Statistics
The 802.1x EAP page displays detailed information regarding the EAP (Extensible
Authentication Protocol) frames that were sent or received. To configure the
802.1X feature, see the 802.1X Properties page.
To view the EAP Statistics and/or set the refresh rate:
2
STEP 1 Click Status and Statistics > 802.1x EAP.
STEP 2 Select the Interface that is polled for statistics.
STEP 3 Select the Refresh Rate (time period) that passes before the EAP statistics are
refreshed.
The values are displayed for the selected interface.
•EAPOL Frames Received—Valid EAPOL frames received on the port.
•EAPOL Frames Transmitted—Valid EAPOL frames transmitted by the port.
•EAPOL Start Frames Received—EAPOL Start frames received on the port.
•EAPOL Logoff Frames Received—EAPOL Logoff frames received on the
port.
•EAP Response/ID Frames Received—EAP Resp/ID frames received on the
port.
•EAP Response Frames Received—EAP Response frames received by the
port (other than Resp/ID frames).
•EAP Request/ID Frames Transmitted—EAP Req/ID frames transmitted by
the port.
•EAP Request Frames Transmitted—EAP Request frames transmitted by
the port.
Cisco 500 Series Stackable Managed Switch Administration Guide26
2
Status and Statistics
ACL Statistics
•Invalid EAPOL Frames Received—Unrecognized EAPOL frames received
on this port.
•EAP Length Error Frames Received—EAPOL frames with an invalid Packet
Body Length received on this port.
•Last EAPOL Frame Version—Protocol version number attached to the most
recently received EAPOL frame.
•Last EAPOL Frame Source—Source MAC address attached to the most
recently received EAPOL frame.
To clear statistics counters:
•Click Clear Interface Counters to clear the selected interfaces counters.
•Click Refresh to refresh the selected interfaces counters.
•Click View All Interfaces Statistics to clear the counters of all interfaces.
ACL Statistics
STEP 1 Click Status and Statistics > ACL.
STEP 2 Select the Refresh Rate (time period in seconds) that passes before the page is
When the ACL logging feature is enabled, an informational SYSLOG message is
generated for packets that match ACL rules.
To view the interfaces on which packets were forward or rejected based on ACLs:
refreshed. A new group of interfaces is created for each time period.
The interfaces on which packets were forwarded or rejected based on ACL rules
are displayed.
To manage statistics counters:
•Click Refresh to reset the counters.
•Click Clear Counters to clear the counters of all interfaces.
27Cisco 500 Series Stackable Managed Switch Administration Guide
Status and Statistics
TCAM Utilization
TCAM Utilization
The device architecture uses a Ternary Content Addressable Memory (TCAM) to
support packet actions in wire speed.
TCAM holds the rules produced by applications, such as ACLs (Access Control
Lists), Quality of Service (QoS), IP Routing and user-created rules.
Some applications allocate rules upon their initiation. Additionally, processes that
initialize during system boot use some of their rules during the startup process.
To view TCAM utilization, click Status and Statistics > TCAM Utilization.
The following fields are displayed for SG500X/SG500XG devices and for Sx500
devices in Layer 3 system mode and when the device is part of a stack (per unit):
2
•Unit No—Unit in stack for which TCAM utilization appears. This is not
displayed when the device is in standalone mode.
•Maximum TCAM Entries for Routing and Multicast Routing—Maximum
TCAM entries available for routing and Multicast Routing.
•IPv4 Routing
-In Use—Number of TCAM entries used for IPv4 routing.
-Maximum—Number of available TCAM entries that can be used for IPv4
routing.
•IPv4 Multicast Routing
-In Use—Number of TCAM entries used for IPv4 Multicast routing.
-Maximum—Number of available TCAM entries that can be used for IPv4
Multicast routing.
•IPv6 Routing
-In Use—Number of TCAM entries used for IPv6 Multicast routing.
-Maximum—Number of available TCAM entries that can be used for IPv6
Multicast routing.
•IPv6 Multicast Routing—Number of TCAM entries used for IPv6 routing.
-In Use—Number of TCAM entries used for IPv6 routing.
-Maximum—Number of available TCAM entries that can be used for IPv6
routing.
Cisco 500 Series Stackable Managed Switch Administration Guide28
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