Industrial Managed
Ethernet Switch – EH9711
User Manual
Page
139
of
223
Table 2.101 Descriptions of PTP Clock Configuration
Label
Description
Factory
Default
Delete
Check this box and click on '
Save
' button to delete the clock instance.
-
Clock Instance
Indicates the Instance of a particular Clock Instance [0…3]. Click on the Clock
Instance number to edit the Clock details.
HW Domain
Indicates the HW clock domain used by the clock.
Device Type
Indicates the Type of the Clock Instance. There are five Device Types.
1. Ord-Bound - clock's Device Type is Ordinary-Boundary Clock.
2. P2p Transp - clock's Device Type is Peer to Peer Transparent Clock.
3. E2e Transp - clock's Device Type is End to End Transparent Clock.
4. Master Only - clock's Device Type is Master Only.
5. Slave Only - clock's Device Type is Slave Only.
Profile
Indicates the profile used by the clock.
After Clicking Add NEW PTP Clock button, another webpage will be launched, as shown in Figure 2.114. Table 2.102
summarizes the parameters for new PTP Clock Configuration.
Table 2.102 Descriptions of New PTP Clock Configuration
Label
Description
Factory Default
Delete
Check this box and click on 'Save' to delete the clock instance.
-
Clock Instance
Indicates the instance number of a particular Clock Instance [0..3].
Click on the Clock Instance number to edit the Clock details.
0
HW Domain
Indicates the HW clock domain used by the clock.
0
Device Type
Indicates the Type of the Clock Instance. There are five Device Types.
1. Ord-Bound - clock's Device Type is Ordinary-Boundary Clock.
2. P2p Transp - clock's Device Type is Peer to Peer Transparent Clock.
3. E2e Transp - clock's Device Type is End to End Transparent Clock.
4. Master Only - clock's Device Type is Master Only.
5. Slave Only - clock's Device Type is Slave Only.
Ord-bound
Profile
Indicates the profile used by the clock.
No Profile
Click
Add New PTP Clock
button to create a new clock instance. Click
Save
button to save the setting configuration. Click
Reset
button to keep to the original setting.
2.17
GVRP
GVRP (GARP VLAN Registration Protocol or Generic VLAN Registration Protocol) is a standard-based protocol that
facilitates control of virtual local area networks (VLANs) within a larger network. GVRP conforms to the Institute of Electrical
and Electronics Engineers (IEEE) 802.1Q specification, which defines a method of tagging frames with VLAN configuration
data over networ trunk interconnects. GVRP is based on Generic Attribute Registration Protocol (GARP) and IEEE 802.1r,
which defines procedures for end stations and switches in a VLAN to register and deregister attributes, such as identifiers or
addresses, with each other. It provides every end station and switch with a current record of all the other end stations and
switches that can be reached on the network. GVRP is similar to GARP, as both eliminate unnecessary network traffic by
preventing attempts to transmit information to unregistered users. In addition, it is necessary to manually configure only one
switch with all the other switches then being updated automatically.
Becoming part of a formal IEEE 802.1ak standard amendment in 2007, Multiple VLAN Registration Protocol replaced GVRP,
as it was found to be prone to performance issues that could potentially cause prolonged network convergence. This delay was
found to create bandwidth degradation on the network at the point where the delayed convergence appeared. Technically,
GVRP is still included as part of the IEEE standard, as the amendment did not completely remove it. It is expected to be
removed in the future, but until that happens, GVRP is still being used.
