Motorola PTP 500 User's Guide Page 73

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PTP 300 and PTP 500 Series User Guide Ethernet bridging
phn-1115_006v000
Sep 2010
1-33
Ethernet bridging
Customer network
Transparent Ethernet service
The PTP 300 and PTP 500 Series provide an Ethernet service between the Ethernet
port at a local ODU and the Ethernet port at an associated remote ODU. The Ethernet
service is based on conventional layer two transparent bridging, and is equivalent to
the Ethernet Private Line (EPL) service defined by the Metro Ethernet Forum (MEF).
The service is transparent to untagged frames, standard VLAN frames, priority-tagged
frames, provider bridged frames, and provider backbone bridged frames. In each case,
the service preserves MAC addresses, VLAN ID, Ethernet priority and Ethernet
payload in the forwarded frame. The maximum frame size for bridged frames is 2000
octets.
Layer two control protocols
The PTP 300 and PTP 500 Series are transparent to layer two control protocols (L2CP)
including:
Spanning tree protocol (STP), rapid spanning tree protocol (RSTP)
Multiple spanning tree protocol (MSTP)
Link aggregation control protocol (LACP)
Link OAM, IEEE 802.3ah
Port authentication, IEEE 802.1X
Ethernet local management interface (E-LMI), ITU-T Q.933.
Link layer discovery protocol (LLDP)
Multiple registration protocol (MRP)
Generic attribute registration protocol (GARP)
The system does not generate or respond to any L2CP traffic.
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