2019年8月2日 · SDH is a standard that defines optical signals as well as a synchronous frame structure for multiplexed digital traffic. It is is used in Europe by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T). The SDH equipment is used everywhere except North America.

The LAN ports are the physical 10BaseT or 100BaseT on the NE. All valid Ethernet packets are accepted (both Ethernet 2 and IEEE 802.3). The WAN ports are the logical connection points to the SDH channels. The LAN port is the interface between the customers Ethernet LAN and the Ethernet switch on the LAN unit.

transported over SONET from any port on a Cisco ONS 15454 OC-N card provisioned to support SDH signals. This chapter explains how the ONS 15454 transports SDH traffic over SONET.

SONET/SDH networks have stood the test of time and, until recently, they have been primarily used to transport aggregated voice signals and private-line frame-relay and ATM services. The growth of these high-revenue-generating services over the years has resulted in large-scale deployments of metropolitan and long-haul SONET/SDH networks worldwide.

SDH is a standard that defines optical signals as well as a synchronous frame structure for multiplexed digital traffic. It is is used in Europe by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T). The SDH equipment is used everywhere except North America.

SONET ports are configured for channelized OC-3 operation. SDH ports can be configured for channelized STM-1 operation. The port’s transmit clock rate can be node or loop timed. The port’s receive clock rate can be used as a synchronization source for the system.

In simple terms, a ContainerLink is an SDH virtual circuit. By default there are 5 types of ContainerLinks defined: VC12, VC3, VC4, VC4-04 and VC4-16. The latter two provide support for concatenation.

When an Ethernet port is configured in WAN mode (xgig wan), you can change specific SONET/SDH parameters to reflect the SONET/SDH requirements for this port. The following CLI output shows an example of a SONET/SDH configuration for a WAN PHY Ethernet port.

The 7705 SAR supports SONET/SDH ports on the following adapter cards: 4-port OC3/STM1 Clear Channel Adapter card 2-port OC3/STM1 Channelized Adapter card

Only the TDM satellite has native SONET/SDH ports. When an Ethernet port is configured in WAN mode (xgig wan), you can change specific SONET/SDH parameters to reflect the SONET/SDH requirements for this port. The following CLI output shows an example of a SONET/SDH configuration for a WAN PHY Ethernet port: