PurposeCommand or Action
Configures the source IP address for all PTP packets.switch(config) # [no] ptp
source ip-address [vrf vrf]
Step 3
The ip-address can be in IPv4 format.
Enables configuring multi domain feature on the switch. It also
allow you to set the attributes such as priority, clock-class threshold
, clock-accuracy threshold, transition priorities etc. on the switch.
switch(config) # [no] ptp
multi-domain
Step 4
Specify the values for the domain and priority.switch(config) # [no] ptp
domain value priority value
Step 5
The range for the domain value is from 0 to 127. The default value
of the domain is 0
The range for the priority value is from 0 to 255. The default value
of the priority is 255
Specify the values for domain and clock class threshold. The default
value is 248.
switch(config) # [no] ptp
domain value
clock-class-threshold value
Step 6
The range for the domain value is from 0 to 127.
The range for the clock-class-threshold value is from 0 to 255.
It is not necessary that a clock class threshold value ensure
election of the slave clock on any ports. The switch uses
this value to determine whether the source clock is
traceable. If the clock class value from the peer is higher
or equal than the clock class threshold value in a domain,
the switch runs BMCA to elect the slave port from a
domain. If none of the domains has the clock class below
the threshold value, the switch runs BMCA on all the PTP
enabled ports to elect the best clock.
Note
Specify the values for domain and clock accuracy threshold. The
default value is 254.
switch(config) # [no] ptp
domain value
Step 7
clock-accuracy-threshold
value
The range for the domain value is from 0 to 127.
The range for the clock-accuracy-threshold value is from 0 to 255.
Sets the domain transition-attributes priority1 value that is used
when sending a packet out from this domain to a peer domain. The
switch(config) # [no] ptp
multi-domain
Step 8
value of the priority1 in the announce message from the remote
transition-attributes
priority1 value
port is replaced by the value of domain transition-attributes priority1
when the announce message has to be transmitted to a peer in a
domain, that is different from that of the slave interface. The default
value is 255.
The range for the transition-attributes priority1 value is from 0 to
255.
Sets the domain transition-attributes priority2 value that is used
when sending a packet out from this domain to a peer domain. The
switch(config) # [no] ptp
multi-domain
Step 9
value of the priority2 in the announce message from the remote
transition-attributes
priority2 value
port is replaced by the value of domain transition-attributes priority2
when the announce message has to be transmitted to a peer in a
Cisco Nexus 3548 Switch NX-OS System Management Configuration Guide, Release 6.x
15
Configuring PTP
Configuring Multiple PTP Domains
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