Cisco Nexus 3548 - Configuring PTP Grandmaster Clock

PurposeCommand or Action
domain, that is different from that of the slave interface. The default
value is 255.
The range for the transition-attributes priority2 value is from 0 to
255.
Associates a domain on a PTP enabled interface. If you do not
configure the domain specifically on an interface, it takes the default
value (0).
switch(config-if) # [no] ptp
domain value
Step 10
The range for the domain value is from 0 to 127.
The following example shows the PTP domains configured on a switch:
switch(config)# show ptp domain data
MULTI DOMAIN : ENABLED
GM CAPABILITY : ENABLED
PTP DEFAULT DOMAIN : 0
PTP TRANSITION PRIORITY1 : 20
PTP TRANSITION PRIORITY2 : 255
PTP DOMAIN PROPERTY
Domain-Number Domain-Priority Clock-Class Clock-Accuracy Ports
0 255 248 254 Eth1/1
1 1 1 254
switch(config)#
The following example shows the domains associated with each PTP enabled interfaces:
switch(config)# show ptp interface domain
PTP port interface domain
--------------------------
Port Domain
------- -----------------
Eth1/1 0
1 1 254
switch(config)#
Configuring PTP Grandmaster Clock
You can configure convergence time to prevent timing loops at the PTP level when grandmaster capability
is disabled on a switch. Grandmaster capability is enabled on the device by default.
.
Procedure
PurposeCommand or Action
Enters global configuration mode.switch# configure terminal
Step 1
Enables or disables PTP on the device.switch(config) # [no] feature ptp
Step 2
Enabling PTP on the switch does not enable PTP on
each interface.
Note
Cisco Nexus 3548 Switch NX-OS System Management Configuration Guide, Release 6.x
16
Configuring PTP
Configuring PTP Grandmaster Clock