Cyan Z-Series Engineering and Planning Guide Release 5.0
700-0023-05-00 Rev. 1 © 2013 Cyan, Inc. – All Rights Reserved. Page 71
If the PME-412 line card is installed in a Z33 or Z77 shelf and a LAD or WSS module is providing the OSC
and the traffic-carrying PME interfaces are fiber patched to a LAD or WSS/AWG module, Cyan
recommends that you set the PME 10G ETH/OTN Fiber Port Signal Type parameter to “OTU-2” (General
sub-tab). When the PME fiber port is provisioned with a signal type of OTU2, the Topology Discovery and
Routing parameters are automatically disabled and the PME line card 100 Mbps of bandwidth that was
reserved for the in-band management channel is returned to the PME 10G fiber port for payload. Disabling
Topology Discovery also prevents the system from displaying a topology line in addition to the OSC line to
the adjacent node in the Network view tab.
2.4.1 Synchronous Ethernet
PME-412 and PME-216i line cards support Synchronous Ethernet (SyncE). SyncE provides the following
features:
• Ability to recover timing from PME 10GE ports to be used as timing references for the system clock
generation and/or derived T1/E1 timing.
Note: PME 1000BASE-F (1G) ports cannot be used as timing references for the system clock or
derived T1/E1 timing.
• Ability to terminate the Ethernet Synchronization Messaging Channel (ESMC) to transmit and
receive Synchronization Status Messages (SSM).
• Transmit Ethernet signals that are synchronous to the system clock.
SyncE must be enabled on a per-Ethernet port basis. SyncE is disabled by default. When SyncE is enabled
on any given Ethernet port, 1GE or 10GE, its ESMC channel is activated, which allows the transmission and
reception of SSM. Additionally, if it is a PME 10GE port, it is available to be used by the timing subsystem
as a timing reference for system clock generation and/or to generate a derived T1/E1 signal to be used by the
Building Integrated Timing Source (BITS) equipment.
Although a PME 1GE port cannot be used to recover timing references, it is capable of providing a timing
reference to external equipment.
2.4.2 System Requirements
• Cyan Z22 (-48V shelf)
• Cyan Z33
• Cyan Z77
2.4.3 PME-412 Ethernet Services, OAM, QoS, and Synchronization
• ITU/MEF E-Line (EPL and EVPL) and E-LAN (E-LAN and E-VLAN) services
• VLANs with independent VLAN learning (802.1Q): 4,096
• Q-in-Q (802.1ad)
• MAC bridging (802.1D)
• MAC addresses: 32,000
• PBB (Provider Backbone Bridging 802.1ah)
• PBB-TE 802.1Qay for connection oriented Ethernet
• Spanning Tree (802.1D), Multiple Spanning Tree (802.1s), and Rapid Spanning Tree (802.1w) support
• Link Aggregation (802.3ad)
• Trunk (NNI) protection
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