21-9
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 21 DLPs A400 to A499
DLP-A430 View Spanning Tree Information
Note Corning MetroCor fiber is optimized for optical interfaces that transmit at 1550 nm or in the C and L
DWDM windows. This fiber targets interfaces with higher dispersion tolerances than those found in
OC-3 IR/STM-1 SH, OC-12 IR/STM-4 SH, and OC-48 IR/STM-16 SH interface optics. If you are using
Corning MetroCor fiber, the interface optics for these cards will become dispersion limited before they
will become attenuation limited. In this case, consider using OC-3 LR/STM-1 LH, OC-12 LR/STM-4
LH, and OC-48 LR/STM-16 LH cards instead of OC-3 IR/STM-1 SH, OC-12 IR/STM-4 SH, and OC-48
IR/STM-16 SH cards.
Note With all fiber types, network planners and engineers should review the relative fiber type and optics
specifications to determine attenuation, dispersion, and other characteristics to ensure appropriate
deployment.
Step 1 Plan your fiber connections. Use the same plan for all 1+1 nodes.
Step 2 Align the keyed ridge of the cable connector with the transmit (Tx) connector of a working OC-N card
at one node and plug the other end of the fiber into the receive (Rx) connector of a working OC-N card
at the adjacent node. The card displays an SF LED if the transmit and receive fibers are mismatched (one
fiber connects a receive port on one card to a receive port on another card, or the same situation with
transmit ports). Figure 19-1 on page 19-6 shows the cable location.
Step 3 Repeat Steps 1 and 2 for the corresponding protect ports on the two nodes and all other working/protect
port pairs that you want to place in a 1+1 configuration.
Step 4 Return to your originating procedure (NTP).
DLP-A430 View Spanning Tree Information
Step 1 In node view, click the Maintenance > Ether Bridge > Circuits tabs.
Step 2 In the EtherBridge Circuits window, you can view the following information:
• Type—Identifies the type of Ethernet circuit mapped to the spanning tree, such as EtherSwitch
point-to-point.
• Circuit Name/Port—Identifies the circuit name for the circuit in the spanning tree. This column also
lists the Ethernet slots and ports mapped to the spanning tree for the node.
Purpose This task allows you to view E-Series Ethernet circuits and the Ethernet
front ports operating with the Spanning Tree Protocol (STP). The E-Series
card supports up to eight STPs per node. For more information about STP,
refer to the Ethernet Card Software Feature and Configuration Guide for
the Cisco ONS 15454 SDH, Cisco ONS 15454, and Cisco ONS 15327.
Tools/Equipment None
Prerequisite Procedures DLP-A60 Log into CTC, page 17-66
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Retrieve or higher
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