Cisco Sg3008 Manual

Administration: Time Settings
Configuring System Time
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•IPv4 Source Interface—Select the IPv4 interface whose IPv4 address will 
be used as the source IPv4 address in messages used for communication 
with the SNTP server. 
•IPv6 Source Interface—Select the IPv6 interface whose IPv6 address will 
be used as the source IPv6 address in messages used for communication 
with the SNTP server.
NOTEIf the...

Administration: Time Settings
Configuring System Time
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•Source—How SNTP server was defined, for example: manually or from 
DHCPv6 server.
•Interface—Interface on which packets are received.
STEP  3To add a Unicast SNTP server, enable SNTP Client Unicast.
STEP  4Click Add.
STEP  5Enter the following parameters:
•Server Definition—Select if the SNTP server is going to be identified by its 
IP address...

Administration: Time Settings
Configuring System Time
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is a secondary server, and so forth. If the primary server is down, the device 
polls all servers with the polling setting enabled, and selects a new primary 
server with the lowest stratum.
•Authentication—Select the check box to enable authentication.
•Authentication Key ID—If authentication is enabled, select the value of the 
key ID. (Create...

Administration: Time Settings
Configuring System Time
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Select an interface and select the reception/transmission options.
STEP  4Click Apply to save the settings to the Running Configuration file.
Defining SNTP Authentication 
SNTP clients can authenticate responses by using HMAC-MD5. An SNTP server is 
associated with a key, which is used as input together with the response itself to 
the MD5...

Administration: Time Settings
Configuring System Time
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•Authentication Key—Enter the key used for authentication (up to eight 
characters). The SNTP server must send this key for the device to 
synchronize to it.
•Trusted Key—Select to enable the device to receive synchronization 
information only from a SNTP server by using this authentication key. 
STEP  6Click Apply. The SNTP Authentication...

Administration: Time Settings
Configuring System Time
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of the network is blocked (see Chapter 9, “Configuring Ports” and 
Chapter 9, “Configuring LAG Settings”)
•Limit PoE operation to a specified period.
Absolute Time Range 
To define an absolute time range:
STEP 1Click Administration > Ti m e  S e t t i n g s > Ti m e Range.
The existing time ranges are displayed.
STEP  2To add a new time range,...

Administration: Time Settings
Configuring System Time
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STEP  3To add a new recurring time range, click Add. 
STEP  4Enter the following fields:
•Recurring Starting Time—Enter the date and time that the Time Range 
begins on a recurring basis. 
Recurring Ending Time—Enter the date and time that the Time Range ends on a 
recurring basis. 

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Administration: Diagnostics 
This section contains information for configuring port mirroring, running cable 
tests, and viewing device operational information.
It covers the following topics:
•Testing Copper Ports
•Displaying Optical Module Status
•Configuring Port and VLAN Mirroring
•Viewing CPU Utilization and Secure Core Technology
Testing Copper Ports
The Copper Test page displays the results...

Administration: Diagnostics
Te s t i n g  C o p p e r  P o r t s
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•(Optional) Disable EEE (see the Port Management > Green Ethernet > 
Properties page)
Use a CAT5 data cable when testing cables using (VCT).
Accuracy of the test results can have an error range of +/- 10 for Advanced Testing 
and +/- 2 for basic testing.
!
CAUTIONWhen a port is tested, it is set to the Down state and communications are...

Administration: Diagnostics
Displaying Optical Module Status
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If the por t being tested is a Giga por t , the Advanced Information block contains the 
following information, which is refreshed each time you enter the page:
•Cable Length: Provides an estimate for the length.
•Pair—Cable wire pair being tested.
•Status—Wire pair status. Red indicates fault and Green indicates status OK.
•Channel—Cable...