Industrial Managed
Ethernet Switch
User Manual
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Version
Set the PTP operation version. Note that v1 (IEEE 1588-2002) and v2
(IEEE 1588-2008) are supported.
1
Clock Mode
Select clock type of the PTP (Precision Time Protocol). The switch has
four modes: End-End Boundary Clock, End-End Transparent Clock
(TC), Peer-Peer Boundary Clock, and Peer-Peer Transparent Clock
(TC).
End-to-End
Transport
Select Ethernet (layer 2) multicast transport or layer 3 (UDP/IPv4)
multicast transports for PTP (Precision Time Protocol) messages.
IPV4
Sync Interval
Set the interval of the sync packet transmitted time
.
Small interval
causes too frequent sync, which will cause more load to the device
and network
.
1
Clock Stratum
Set the Clock Stratum value. The lower values take precedence to be
selected as the master clock in the best master clock algorithm
(BMCA).
3
Clock Class
Clock Class represents clock
’s accuracy level. It is an attribute of an
ordinary or boundary clock. It denotes time traceability or frequency
distributed by the grandmaster clock. Please refer to IEEE 1588-2008,
Table 5 for definitions, allowed values, and interpretation
.
248
priority 1
Set the clock priority 1 (PTP version 2). The lower values take
precedence to be selected as the master clock in the best master
clock algorithm, 0 = highest priority, 255 = lowest priority.
128
priority 2
Set the clock priority 2 (PTP version 2). The lower values take
precedence to be selected as the master clock in the best master
clock algorithm (BMCA), 0 = highest priority, 255 = lowest priority.
128
UTC Offset
Coordinated Universal Time (UTC) offset value
0
Offset to Master
The offset time to the master clock
None
Grandmaster
UUID
The Grandmaster UUID for PTP version 1
None
Parent UUID
The parent master UUID for PTP version 1
None
Clock Identifier
The clock identifier for PTP version 1
None
Table 2.10 Description of PTP Port Setting
Label
Description
Factory Default
Port
Port number
-
Enabled
This is the port
’s mode information which indicates whether the port’s
PTP function is enabled or disabled.
Enabled
Status
This is PTP
’s per port operation status. If the per port function is
enabled, but the status is still disabled, please enable the PTP master
option (State option in Table 2.9).
Disabled
Mode
Enabled/Disabled PTP per port function
Disabled
2.3.11 Secure Shell - SSH
The managed switch can be managed using command line interface
)
CLI
(
as described in Chapter 4
The users
have option to remotely connect to the managed switch using either secure shell
)
SSH
(
or Telnet through any of its
port
.
In this subsection, SSH will be introduced and then Telnet will be discussed in the next subsection
.
SSH was
designed to replace Telnet and other insecure remote shell protocols that sends data or command in plaintext
.
SSH
uses encryption to secure its data or command over an unsecure network
.
Note that only users with administrator
(admin) access right as configured in Section 2.3.1 can use SSH to login to the device.
To enable the SSH, please check the
Enabled
box behind the
SSH
option in Figure 2.50. At the beginning, the
Server will send a public key to a Client, and the Client will check if the received public key is correct. If it is not