Cisco Systems MGX 8230 Configuring Service on a T3 or E3 Cesm, Error and Alarm Response, Ais-Oam

Chapter 6 Card and Service Configuration

Circuit Emulation Service Module for T3 and E3

•For E3

–Cell delay of 2.9 msec

–CDVT of 2 msec in increments of 125 microseconds

Error and Alarm Response

When it detects a loss of signal (LOS) alarm, the CESM notifies the connected CPE in the upstream direction after an integration period. The CESM continues to emit cells at the nominal rate but sets the ATM cell payload with an appropriate data pattern as specified by the ATM Forum CES V2.0 specification. Also, an OAM cell with RDI code goes to the far end to indicate out-of-service. The significance of the different types of alarms appears in Table 6-3.

Table 6-3 CESM Errors and Alarms

	Alarm	Down
Error	Type	stream	Up Stream	Comments
Link Failure	Blue (LOS)	AIS—OAM	none	Data cells According to ATM-Forum
(RX)		cells		CES-IS V 2.0
Receive RAI	Yellow	None	None
Receive LOF		n/a	n/a	Not applicable
Receive AIS	Blue (AIS)	AIS (link)	FERF OAM	AIS—done over the T3/E3 link by
			cells	sending the AIS data over the T3/E3 link

Configuring Service on a T3 or E3 CESM

This section first describes the steps for configuring the card, line, and port-level parameters for an MGX-CESM-T3 and MGX-CESM-E3. It then describes how to add a connection. If necessary, refer to the section titled “Sequence of Configuration Tasks, page 6-2” for background information on these types of tasks. Use either the CLI or the CiscoView application to set up the card and line parameters. Use either the CLI or the Cisco WAN Manager application to add connections. The fundamental tasks and applicable CLI commands appear in the following list. For a complete list of CLI commands that apply to the CESM cards, use the Help command on the CLI of the card or refer to the tables at the front of the Cisco MGX 8000 Series Command Reference.

•Optionally configure Y-cable redundancy at the card level (addred on the CLI).

•Optionally modify resource partitioning at the card level (cnfcdrscprtn)

•Activate a physical line (addln on the CLI) and optionally configure the line (cnfln) for line coding, line length, and clock source

•Activate the functioning of the logical port on a physical line (addport)

•Optionally modify resource partitioning at the port level (cnfportrscprtn)

•Add the connections by using addcon (or addchan if NSAP addressing is necessary)

•Configure the connection for CDVT, cell loss integration period, and egress buffer size by using cnfcon (or cnfchan if NSAP addressing is necessary)

	Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001		6-39