Cable+Network Tester
Switch Tests
25
Switch Tests
The Product can do switch connectivity, Ping, and Power over Ethernet (PoE), and tests.
Switch Connectivity Tests
In a network test, the Product performs a series of queries to determine and report information
about a switch or device. The Product determines information about the device and reports
advertised data rates with full-duplex or half-duplex. See
.
Ping Tests
The Product supports IPv4 and IPv6 addresses. Both protocols may be configured based on
what is available on the network.
With Ping enabled, the Product pings the device specified in
Settings
>
Ping
and the DNS
servers and gateways that the Product detects. The Product pings each device four times with
a 1 second threshold timeout for each attempt and shows:
If an IP address is accessible.
The round-trip response time in milliseconds (ms).
Power over Ethernet (PoE) Tests
With PoE Test enabled, the Product automatically does a PoE test after the completion of a
network switch test.
Definitions:
Power Sourcing Equipment (PSE) is a device, such as a switch, that can provide PoE.
A Powered Device (PD) is a device that can receive PoE from a PSE.
PoE negotiation standards are defined in IEEE 802.3af/at/bt.
In a PoE test:
1. With the Product connected to a PSE, the Product acts as a PD and starts a hardware
negotiation with the PSE.
2. If the PSE is compliant with the IEEE 802.3 standard, the Product determines the maximum
power the PSE can offer (Class 0 to Class 8).
3. The Product places a load on the PSE to determine if the PSE delivers the power required
to meet the negotiated hardware power class at the PD.
4. If the PSE meets the hardware negotiation power class, the Product attempts a software
negotiation with LLDP/CDP to determine the software power level offered.
5. The Product places a load on the PSE to determine if the PSE delivers the software
negotiated power at the PD.
Summary of Contents for LinkIQ
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