Optimize backplane bandwidth

Procedure 6-8: Optimize backplane bandwidth

Overview

Use this procedure to manually optimize backplane bandwidth between the VLNC35 Fast Ethernet and VLNC50/52/55 SONET/SDH Transport circuit packs.

To determine if manually optimizing backplane bandwidth is required, refer to Procedure 6-7: Evaluate bandwidth utilization.

Defragmentation behaviors

The following behaviors apply when you perform the defragmentation operation:

Rearrangements do not interrupt traffic on cross-connections that are not being rearranged.
No misconnections are caused by rearrangement.
During cross-connection provisioning, the NE dynamically assigns the I/O tributaries to the backplane tributaries.
The optimize backplane bandwidth operation removes the fragmentation at the STS1/VC3 and STS3c/VC4 levels and minimizes the number of STS1s/VC3s required to transport cross-connected VT1.5s/VC12s. Interruptions will vary in duration on VT1.5/VC12, STS1/VC3, and STS3c/VC4 cross-connections each time they are rearranged.

Excessive fragmentation

Excessive fragmentation can be determined in the following ways:

If you provision a new cross-connection and the backplane bandwidth necessary to support the cross-connection is not available, the command will be denied with a SARB (Status All Resources Busy) error response.
You can check the backplane bandwidth utilization for the VLNC35 circuit pack using the WaveStar^® CIT to display the information or the RTRV-STATE-EQPT command to view the raw utilization data.

Privilege level

You must log in as a Privileged or General user to complete this procedure.

Before you begin

Refer to Before you begin and Required equipment in this chapter.

Steps

NOTICE

Service-disruption hazard

Traffic interruptions may occur on rearranged cross-connections.

Review the applicable Alcatel-Lucent 1850 Transport Service Switch (TSS-5) Release 7.2.X Customer Release Notes for any detailed information or cautions that may apply to this procedure.

Complete the following steps to optimize backplane bandwidth.

From the System View menu, select Configuration → Optimize Backplane Bandwidth.

Result:

The Equipment Selection window opens.

From the Equipment Selection window, highlight the VLNC35 circuit pack (CP fn-c-1) and click Select.

Result:

A dialog box appears asking you to confirm executing this command. Click Yes to initiate optimization.

End of steps