OcNOS-SP : Timing and Synchronization Guide : Precision Time Protocol Configuration Guide : Boundary Clock Configuration : Boundary Clock Configuration
Boundary Clock Configuration
This section shows how to set up a boundary clock.
SW2 (boundary clock)
 
#configure terminal
Enter Configure mode
(config)#bridge 1 protocol mstp
Create bridge 1 as an MSTP bridge (this step is not mandatory, but is a good practice to avoid layer 2 loops)
(config)#synce
Enter configure Synchronous Ethernet mode.
(config-synce)#synchronization option 1
Set the synchronization network type.
(config-synce)#exit
Exit Synce mode
(config)#interface eth1
Configure interface eth1
(config-if)#switchport
Configure eth1 as Layer 2 port
(config-if)#bridge-group 1
Configure eth1 in bridge group 1
(config-if)#synce
Enter interface Synchronous Ethernet mode.
(config-if-synce)#mode synchronous
Configure synchronous mode.
(config-if-synce)#input-source 2
Configure the interface as an input source with priority 2.
(config-if-synce)#exit
Exit Port Configure mode
(conig-if)#exit
Exit Interface mode
(config)#interface eth2
Configure interface eth2
(config-if)#switchport
Configure eth2 as Layer 2 port
(config-if)#bridge-group 1
Configure eth2 in bridge group 1
(config-if)#synce
Enter interface Synchronous Ethernet mode.
(config-if-synce)#mode synchronous
Configure synchronous mode.
(config-if-synce)#output-source
Configure the interface as an output source.
(config-if-synce)#exit
Exit Port Configure mode
(config-if)#exit
Exit interface mode
(config)#ptp clock 0 profile g8275.1
Enables G8275.1 for PTP time/phase telecom profile
(config-ptp-clk)#number-ports 2
Configure the number of PTP ports on the instance
(config-ptp-clk)#clock-port 2
Configure ptp port
(config-clk-port)#network-interface xe2
Configure underlying interface that is used by this PTP Port
(config-clk-port)#exit
Exit ptp clock port mode
(config-ptp-clk)#clock-port 1
Configure ptp port
(config-clk-port)#network-interface xe1
Configure underlying interface that is used by this PTP Port
(config-clk-port)#exit
Exit ptp clock port mode
SW3 (Boundary clock)
 
#configure terminal
Enter Configure mode
(config)#bridge 1 protocol mstp
Create bridge 1 as an MSTP bridge (this step is not mandatory, but is a good practice to avoid layer 2 loops)
(config)#synce
Enter configure Synchronous Ethernet mode.
(config-synce)#synchronization option 1
Set the synchronization network type.
(config-synce)#exit
Exit Synce mode
(config)#interface eth2
Configure interface eth2
(config-if)#switchport
Configure eth2 as Layer 2 port
(config-if)#bridge-group 1
Configure eth2 in bridge group 1
(config-if)#synce
Enter interface Synchronous Ethernet mode.
(config-if-synce)#mode synchronous
Configure synchronous mode.
(config-if-synce)#input-source 4
Configure the interface as an input source with priority 4.
(config-if-synce)#exit
Exit Port Configure mode
(config-if)#exit
Exit interface mode
(config)#ptp clock 0 profile g8275.1
Enables G8275.1 for PTP time/phase telecom profile
(config-ptp-clk)#number-ports 2
Configure the number of PTP ports on the instance
(config-ptp-clk)#clock-port 2
Configure ptp port
(config-clk-port)#network-interface xe2
Configure underlying interface that is used by this PTP Port
(config-clk-port)#exit
Exit ptp clock port mode
(config-clk-clk)#clock-port 1
Configure ptp port
(config-clk-port)#network-interface xe1
Configure underlying interface that is used by this PTP Port
(config-clk-port)#exit
Exit ptp clock port mode
Validation
SW2
1. Verify the default data set on SW2.
#sh ptp clock 0 dataset
Default Dataset:
Two Step Flag : No
Clock Identity : B8:6A:97:FF:FE:F5:F4:C4
Number Of Ports : 2
Priority1 : 128
Priority2 : 128
Slave Only : No
Local Priority : 128
Max Steps Removed : 255
Domain Number : 24
Clock Quality :
Clock Class : 248
Clock Accuracy : 254
Offset ScaledLogVariance : 65535
2. Verify the port state on SW2.
#show ptp clock 0 port
Port 1:
Port State : Slave
Port Identity : B8:6A:97:FF:FE:F5:F4:C4:00:01
Log Min Delay Req Interval : -4
Peer Mean Path Delay : 0
Log Announce Interval : -3
Announce Receipt Timeout : 3
Log Sync Interval : -4
Delay Mechanism : End to end
Version Number : 2
Local Priority : 128
Master only : False
Signal Fail : False
Network Interface : xe1
Vlan Configured :
Description :
 
Foreign Master #0
L2 Address : e8:c5:7a:79:57:1d
Grandmaster clockIdentity : E8:C5:7A:FF:FE:2E:4B:1C
Port ID : E8:C5:7A:FF:FE:2E:4B:1C:00:01
clockClass : 135
Clock accuracy : 254
Offset scaled log variance : 65535
priority1 : 128
priority2 : 128
Steps removed : 0
PDV Scaled Allan Variance : 10
 
Received Packets : 7530
Discarded Packets : 4
Transmitted Packets : 3018
 
Peer #0
L2 Address : e8:c5:7a:79:57:1d
Clock Identity : e8:c5:7a:ff:fe:2e:4b:1c
Received Announce : 1021
Received Sync : 2042
Received Delay Response : 2041
Transmitted Delay Request : 2041
 
Port 2:
Port State : Master
Port Identity : B8:6A:97:FF:FE:F5:F4:C4:00:02
Log Min Delay Req Interval : -4
Peer Mean Path Delay : 0
Log Announce Interval : -3
Announce Receipt Timeout : 3
Log Sync Interval : -4
Delay Mechanism : End to end
Version Number : 2
Local Priority : 128
Master only : False
Signal Fail : False
Network Interface : xe2
Vlan Configured :
Description :
 
Received Packets : 0
Discarded Packets : 0
Transmitted Packets : 113
Note: Use show ptp stats to collect the PTP statistics and use clear ptp stats to clear the same.
 
Last modified date: 06/30/2023