Cisco Sg3008 Manual

Administration: Diagnostics
Displaying Optical Module Status
88 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
7
•MGBLH1: 1000BASE-LH SFP transceiver, for single-mode fiber, 1310 nm 
wavelength, supports up to 40 km.
•MGBLX1: 1000BASE-LX SFP transceiver, for single-mode fiber, 1310 nm 
wavelength, supports up to 10 km.
•MGBSX1:1000BASE-SX SFP transceiver, for multimode fiber, 850 nm 
wavelength, supports up to 550 m.
•MGBT1: 1000BASE-T SFP transceiver...

Administration: Diagnostics
Configuring Port and VL AN Mirroring
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)  89
7
 
Configuring Port and VLAN Mirroring
Port mirroring is used on a network device to send a copy of network packets 
seen on one device port, multiple device ports, or an entire VLAN to a network 
monitoring connection on another port on the device. This is commonly used for 
network appliances that require monitoring of network traffic,...

Administration: Diagnostics
Viewing CPU Utilization and Secure Core Technology
90 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
7
-Active—Both source and destination interfaces are up and forwarding 
traffic.
-Not Ready—Either source or destination (or both) are down or not 
forwarding traffic for some reason.
STEP  2Click Add to add a port or VLAN to be mirrored.
STEP  3Enter the parameters:
•Destination Port—Select the analyzer port to where...

Administration: Diagnostics
Viewing CPU Utilization and Secure Core Technology
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)  91
7
 
Excessive traffic burdens the CPU, and might prevent normal device operation. 
The device uses the Secure Core Technology (SCT) feature to ensure that the 
device receives and processes management and protocol traffic, no matter how 
much total traffic is received
. SCT is enabled by default on the device and cannot 
be...

8
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)  92
 
Administration: Discovery
This section provides information for configuring Discovery. 
It covers the following topics:
•Bonjour
•LLDP and CDP
•Configuring LLDP 
•Configuring CDP
Bonjour
As a Bonjour client, the device periodically broadcasts Bonjour Discovery protocol 
packets to directly-connected IP subnet(s), advertising its existence and the 
services that it provides; for example, HTTP,...

Administration: Discovery
Bonjour
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)  93
8
 
When Bonjour Discovery is disabled, the device stops any service type 
advertisements and does not respond to requests for service from network 
management applications.
To globally enable Bonjour when the system is in Layer 2 system mode:
STEP 1Click Administration > Discovery - Bonjour.
STEP  2Select Enable to enable Bonjour Discovery globally on the device.
STEP...

Administration: Discovery
LLDP and CDP
94 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
8
STEP  3Click Apply to update the Running Configuration file.
STEP  4To enable Bonjour on an interface, click Add.
STEP  5Select the interface, and click Apply. 
NOTEClick Delete to disable Bonjour on an interface (this performs the delete operation 
without any additional operation, such as Apply).
LLDP and CDP
LLDP (Link Layer Discovery Protocol) and CDP (Cisco...

Administration: Discovery
Configuring LLDP
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)  95
8
 
•CDP and LLDP end devices, such as IP phones, learn the voice VLAN 
configuration from CDP and LLDP advertisements. By default, the device is 
enabled to send out CDP and LLDP advertisement based on the voice 
VLAN configured at the device. Refer to the Voice VLAN and Auto Voice 
VLAN sections for details. 
NOTECDP/LLDP does not distinguish if a port is in...

Administration: Discovery
Configuring LLDP
96 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
8
•Displaying LLDP Local Information
•Displaying LLDP Neighbors Information
•Accessing LLDP Statistics
•LLDP Overloading
LLDP Overview
LLDP is a protocol that enables network managers to troubleshoot and enhance 
network management in multi-vendor environments. LLDP standardizes methods 
for network devices to advertise themselves to other systems, and to...

Administration: Discovery
Configuring LLDP
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)  97
8
 
4. Associate LLDP MED network policies and the optional LLDP-MED TLVs to the 
desired interfaces by using the LLDP MED Port Settings page.
5. If Auto Smartport is to detect the capabilities of LLDP devices, enable LLDP in 
the Smartport Properties page.
6. Display overloading information by using the LLDP Overloading page.
Setting LLDP Properties
The LLDP...