The value of tmnxPtpVRtrPeerLimit specifies the maximum number of PTP peers that may be automatically created by the system on this virtual router instance. The SROS system has a global limit on the number of PTP peers that may be created by the system upon reception of PTP signaling packets. Specifying a value for tmnxPtpVRtrPeerLimit ensures that a specific virtual router instance will not exhaust this global resource. A value of -1 indicates that there is no configured limit for this virtual router instance, and the system may create PTP peers up to the global limit of PTP peers on the PTP clock. A non-zero value does not explicitly reserve resources for this virtual router instance. However, if all PTP virtual router instances have configured tmnxPtpVRtrPeerLimit to a value other than -1, and the total of these limits is less than or equal to the global system limit, this effectively reserves resources for each virtual router instance. If the system has already automatically created PTP peers on a virtual router instance, the limit cannot be reduced lower than the current count of automatically created PTP peers on the virtual router instance.