Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 9: Operations Communications
Release 5.0.x Turin Networks Page 9-5
9.2.4 Section Data Communication Channel (SDCC)
The Section Data Communication Channels (SDCCs) provide communication connectivity between NEs.
All SDCCs are supported through all optical links on the TE-2020 Main Shelf. Both management and con-
trol plane traffic can be carried through these data channels and accessed externally via Ethernet interfaces.
The SDCC is embedded on the standard Section Overhead Bytes D1, D2 and D3 in each of the first STSs
(STS-1, STS-3, STS-12...) overhead. The SDCC supports up to 192kbps of bandwidth. Dynamic Routing
protocol (Open Shortest Path First or OSPF) is supported through these interfaces for IP routing and pro-
vide dynamic IP reachability.
The service state of each optical link’s SDCC is disabled by default but is user provisionable.
NOTE: Either SDCC or LDCC can be used on an optical link. SDCC can only be enabled if the
LDCC is disabled.
9.2.5 Line Data Communication Channel (LDCC)
The Line Data Communication Channels (LDCCs) provide communication connectivity between NEs. All
LDCCs are supported through each optical link on the TE-2020 Main Shelf. Both management and control
plane traffic can be carried through these data channels and accessed externally via Ethernet interfaces.
Similar to the SDCC in the section overhead, the LDCC is embedded on the Line Overhead Bytes D4
through D12 of each STS overhead (up to 12 STSs). The LDCC supports up to 6.9Mbps bandwidth.
Dynamic Routing protocol (OSPF) is supported through these interfaces for IP routing and provide
dynamic IP reachability.
The service state of each optical links LDCC is enabled by default but is user provisionable.
9.3 Operations Communications Protocols
TE-2020 uses the standard IP and TCP as its base network protocol and transport protocol. It also supports
TELNET, FTP, and HTTP as its application protocols to achieve the management tasks.
The following table summarizes the support protocols.
Table 9-3 Operations Communications Protocols
Protocol Function
IP Network Protocol
TCP Provide reliable Transport connectivity
OSPF Provide Dynamic routing and topology dis-
covery support
TELNET Allows NE access with NMS or TL1 session.