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Page 81 / 110 Scroll up to view Page 76 - 80
72
Chapter 5: Using the Web-based Utility for Configuration
Admin Tab - Log
24-Port 10/100/1000 Gigabit Switch with Webview and PoE
Enter the IP address and community string for each management station that will receive trap messages. Strings
are case-sensitive and can be up to 32 characters long. Specify the trap UDP port and version, then click
Add
.
Click
Save Settings
to save the changes.
Admin Tab - Log
The Switch allows you to configure and limit system messages that are logged to flash or RAM memory,
configure the logging of messages that are sent to remote System Log (Syslog) servers, and set an event-level
threshold for sending email alert messages to system administrators.
The following table describes the system event levels.
* There are only Level 2, 5 and 6 event messages for the current firmware release
System Logging
The system allows you to enable or disable event logging, and specify which event levels are logged to RAM or
flash memory. Severe error messages that are logged to flash memory are permanently stored in the Switch to
assist in troubleshooting network problems.
System Log Status
. Enables/disables the logging of debug or error messages to the logging process. (Default:
Enabled)
Level*
Severity Name
Description
7
Debug
Debugging messages
6
Informational
Informational messages only
5
Notice
Normal but significant condition, such as a cold start
4
Warning
Warning conditions, such as return false or unexpected
return
3
Error
Error conditions, such as invalid input or default used
2
Critical
Critical conditions, such as memory allocation, free
memory error, or resource exhausted
1
Alert
Immediate action needed
0
Emergency
System unusable
Figure 5-54: Admin - Log
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73
Chapter 5: Using the Web-based Utility for Configuration
Admin Tab - Log
24-Port 10/100/1000 Gigabit Switch with Webview and PoE
Flash Level
(0-7). Limits log messages saved to the Switch’s permanent flash memory for all levels up to the
specified level. For example, if level 3 is specified, all messages from level 0 to level 3 will be logged to flash.
Note that the Flash Level must be equal to or less than the Ram Level. (Range: 0-7, Default: 3) R
Ram Level
(0-7). Limits log messages saved to the Switch’s temporary RAM memory for all levels up to the
specified level. For example, if level 7 is specified, all messages from level 0 to level 7 will be logged to RAM.
(Range: 0-7, Default: 7)
View Flash Logging
. Click the button to display log messages stored in the Switch’s flash memory.
View Memory Logging
. Click the button to display log messages stored in the Switch’s RAM memory.
Enable the System Log Status, set the level of event messages to be logged to RAM and flash memory, then click
Save Settings
.
Syslog
Allows you to configure the logging of messages that are sent to remote Syslog servers. You can limit the event
messages sent to only those messages at or above a specified level.
Remote Log Status
. Enables/disables the logging of debug or error messages to the remote logging process.
(Default: Disabled)
Logging Facility
. Sets the facility type for remote logging of Syslog messages. There are eight facility types
specified by values of 16 to 23. The facility type is used by the Syslog server to dispatch log messages to an
appropriate service. The attribute specifies the facility type tag sent in Syslog messages. (See RFC 3164.) This
type has no effect on the kind of messages reported by the Switch. However, it may be used by the Syslog server
to process messages, such as sorting or storing messages in the corresponding database. (Range: 16-23,
Default: 23)
Logging Trap
. Limits log messages that are sent to the remote Syslog server for all levels up to the specified
level. For example, if level 3 is specified, all messages from level 0 to level 3 will be sent to the remote server.
(Range: 0-7, Default: 7)
Syslog Server.
Displays the list of remote server IP addresses that will receive Syslog messages. The maximum
number of host IP addresses allowed is five.
Enable Remote Log Status, set the Logging Facility type number, and configure the level of event messages to be
sent to Syslog servers. Enter up to five Syslog server IP addresses in the server list. Click
Save Settings
.
SMTP Setting
Figure 5-55: Admin - Log - Flash Logging
Figure 5-56: Admin - Log - Memory Logging
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74
Chapter 5: Using the Web-based Utility for Configuration
Admin Tab - Port Mirroring
24-Port 10/100/1000 Gigabit Switch with Webview and PoE
To alert system administrators of problems, the Switch can use SMTP (Simple Mail Transfer Protocol) to send
email messages when triggered by logging events of a specified level. The messages are sent to specified SMTP
servers on the network and can be retrieved using POP or IMAP clients.
Admin Status
. Enables/disables the SMTP function. (Default: Enabled)
Severity
. Sets the Syslog severity threshold level used to trigger alert messages. All events at this level or higher
are sent to the configured email recipients. For example, using Level 7 will report all events from level 7 to level
0. (Default: Level 7)
SMTP
(1-3). Specifies a list of up to three recipient SMTP server IP addresses. The Switch attempts to connect to
the other listed servers if the first fails.
Source Email Address
. Sets the email address used for the “From” field in alert messages. You may use a
symbolic email address that identifies the Switch, or the address of an administrator responsible for the Switch.
Destination Email Address
(1-5). Specifies the email recipients of alert messages. You can specify up to five
recipients.
Enable Admin Status, select the minimum severity level, and specify a source email address. Add at least one IP
address to the SMTP server list and specify up to five email addresses to receive the alert messages. Click
Save
Settings
.
Admin Tab - Port Mirroring
You can mirror traffic from any source port to a target port for real-time analysis. You can then attach a logic
analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely
unobtrusive manner.
The target port speed should match or exceed source port speed, otherwise traffic may be dropped from the
monitor port. The Switch supports only one mirror session. Set the following attributes for port mirroring using
the Port Mirroring screen.
Source Port.
Defines the port to which traffic is mirrored.
Type.
Indicates the port mode configuration for port mirroring. The possible field values are:
•
Receive.
Defines the port mirroring on receiving ports. This is the default value.
•
Transmit.
Defines the port mirroring on transmitting ports.
Figure 5-57: Admin - Port Mirroring
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75
Chapter 5: Using the Web-based Utility for Configuration
Admin Tab - Cable Test
24-Port 10/100/1000 Gigabit Switch with Webview and PoE
•
Both.
Defines the port mirroring on both receiving and transmitting ports.
Target Port.
Defines the port from which traffic is mirrored.
Specify the source port, the traffic type to be mirrored, and the target port, then click
Add
. The mirror session is
displayed in the text box.
Admin Tab - Cable Test
To test the connection quality of an attached cable, click on the
Test
button for the port. Note that the cable needs
to be connected at both ends, otherwise the test will fail.
Port
. This is the port to which the cable is connected.
Test Result
. This is the test result. OK indicates that the cable passed the test. No Cable means there is no cable
connected to the port. Open Cable means the cable is connected on only one side. Short Cable indicates that a
short has occurred in the cable. Undefined indicates that the test could not be properly performed.
Cable Fault Distance
. This is the distance from the port at which the cable error occurred.
Last Update
. This is the last time the port was tested.
Test
. Click the
Test
button to perform the test.
Admin Tab - Ping
You can use a ping to see if another site on the network can be reached. Ping sends ICMP echo request packets
to another node on the network. Enter the IP address or host name of the device you want to ping, then click
Go
.
The ping results are displayed in the Ping Status text box.
The following are some common displayed results of a ping:
•
Normal response - The normal response occurs in one to ten seconds, depending on network traffic.
•
Destination does not respond - If the host does not respond, a “timeout” appears in ten seconds.
•
Destination unreachable - The gateway for this destination indicates that the destination is unreachable.
•
Network or host unreachable - The gateway found no corresponding entry in the route table
Figure 5-59: Admin - Ping
Figure 5-58: Admin - Cable Test
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76
Chapter 5: Using the Web-based Utility for Configuration
Admin Tab - Save Configuration
24-Port 10/100/1000 Gigabit Switch with Webview and PoE
Admin Tab - Save Configuration
Downloads or uploads Switch configuration files from a TFTP server. The Switch allows the start-up configuration
to be saved or restored from a TFTP server. You must specify “Upgrade” to download a new configuration file or
“Backup” to save a configuration file to the server.
Select
Upgrade
or
Backup
. Enter the IP address of the TFTP server, specify the name of the configuration file on
the server, and then click
Save Settings.
Admin Tab - Jumbo Frame
The Switch provides more efficient throughput for large sequential data transfers by supporting jumbo frames up
to 10240 bytes on the Gigabit ports and mini jumbo frames on the 10/100Mbps ports. Compared to standard
Ethernet frames that run only up to 1.5 KB, using jumbo frames significantly reduces the per-packet overhead
required to process protocol encapsulation fields.
To use jumbo frames, both the source and destination end nodes (such as a computer or server) must support
this feature. Also, when the connection is operating at full duplex, all switches in the network between the two
end nodes must be able to accept the extended frame size. And for half-duplex connections, all devices in the
collision domain would need to support jumbo frames.
Enabling jumbo frames limits the maximum threshold for broadcast storm control to 64 packets per second.
Figure 5-60: Admin - Save Configuration
Figure 5-61: Admin - Jumbo Frame
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