Virtual Leased Line Services
7750 SR OS Services Guide Page 193
Services for Transporting CES Circuits
Each circuit can be optionally encapsulated in MPLS, Ethernet packets. Circuits encapsulated in
MPLS use circuit pipes (Cpipes) to connect to the far-end circuit. Cpipes support either SAP-
spoke SDP or SAP-SAP connections. Cpipes are supported over MPLS and GRE tunnels. Cpipe’s
default service MTU is set to 1514 bytes.
Circuits encapsulated in Ethernet can be selected as a SAP in Epipes. Circuits encapsulated in
Ethernet can be SAP-spoke SDP connections or Ethernet CEM SAP to Ethernet SAP for all valid
epipe SAPs. Circuits requiring CEM SAP — CEM SAP connections use Cpipes. A local and
remote EC-ID and far-end destination MAC address can be configurable for each circuit. The
CMA/MDA’s MAC address will be used as the source MAC address for these circuits.
For all service types, there are deterministic PIR=CIR values with class=EF parameters based on
the circuit emulation parameters.
All circuit emulation services support the display of status of up, loss of packets (LOP) or admin
down. Also, any jitter buffer overruns or underruns are logged.
Non-stop services are supported for Cpipes and CES over Epipes.
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