For physical ports located on an MDA/IMM/XMA/MDA-s of a 7750 SR or a 7950 XRS platform, PTP messages are supported in the following encapsulations:
For the SyncE/1588 ports located on the CPM or CCM of a 7750 SR or a 7950 XRS platform, PTP supports PTP messages within raw Ethernet (no VLAN header).
For physical ports located on a 7210 SAS satellite, PTP supports PTP messages within raw Ethernet (no VLAN header).
No other encapsulations are supported.