Troubleshooting guide

Release Notes for Cisco ONS 15454 Release 7.0.2

OL-11368-01

New Features and Functionality

Because the cards are tunable to one of four adjacent grid channels on a 100-GHz spacing, each card is

available in eight versions, with 15xx.xx representing the first wavelength and 15yy.yy representing the

last wavelength of the four available on the board. In total, 32 DWDM wavelengths are covered in

accordance with the ITU-T 100-GHz grid standard, G.692, and Telcordia GR-2918-CORE, Issue 2. The

card versions and their corresponding wavelengths are documented in the Cisco ONS 15454 DWDM

Installation and Operations Guide.

Client Interface

The client interface supports the following payload types:

• 2G FC

• 1G FC

• 2G FICON

• 1G FICON

• GE

• ESCON

Note Because the client payload cannot oversubscribe the trunk, a mix of client signals can be accepted, up to

a maximum limit of 2.5 Gbps.

Details on the input data rate for each client interface, the encapsulation method, and the mix and match

of client interfaces on various ports can be found in the Cisco ONS 15454 DWDM Installation and

Operations Guide.

For the MXP_MR_2.5G card, protection is done using Y-cable protection. Two MXP_MR_2.5G cards

can be joined in a Y-cable protection group, which provides protection against failures both on the fiber

and in the muxponders.

For the MXPP_MR_2.5G card, protection is done using splitter protection, which provides protection

against failures due to fiber cuts or unacceptable signal degradation on the trunk side.

Note Switching is performed only if the protect line is error free.

GFP-T performance monitoring (GFP-T PM) is available via remote monitoring (RMON), and trunk PM

is managed according to Telcordia GR-253-CORE and ITU G.783/826. Client PM is achieved through

RMON for FC and GE.

A buffer-to-buffer credit management scheme provides FC flow control. With this feature enabled, a port

indicates the number of frames that can be sent to it (its buffer credit), before the sender is required to

stop transmitting and wait for the receipt of a “ready” indication The MXP_MR_2.5G and

MXPP_MR_2.5 cards support FC credit-based flow control with a buffer-to-buffer credit extension of

up to 1600 km for 1G FC and up to 800 km for 2G FC. The feature can be enabled or disabled.

You can install MXP_MR_2.5G and MXPP_MR_2.5G cards in Slots 1 to 6 and 12 to 17. The

TCC2/TCC2P card is the only other card required to be used with these muxponder cards. Cross-connect

cards do not affect the operation of the muxponder cards.