Table 5-43 Mxp_Mr_2.5G And Mxpp_Mr_2.5G Muxponder Card Line Distance Extension Settings - Cisco ONS 15454 DWDM Installation And Operation Manual

DLP-G237 Change Distance Extension Settings for MXP_MR_2.5G and MXPP_MR_2.5G Cards
Table 5-43
Parameter
Port #
Enable
Distance
Extension
Auto Detect
Credits
Credits
Available
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
5-70
MXP_MR_2.5G and MXPP_MR_2.5G Muxponder Card Line Distance Extension
Settings
Description
(Display only) Port number.
If checked, allows end-to-end distances
up to 1600 km for FC1G and up to 800 km
for FC2G through a flow control scheme
based on the transparent-mode Generic
Framing Protocol (GFP-T). GFP-T flow
control enables the node to be part of a
storage area network (SAN) with
long-distance remote nodes. Cisco
recommends that you enable distance
extension when one or both of the
following conditions exist:
The distance between the source and
•
destination MXP_MR_2.5G/
MXPP_MR_2.5G cards is greater
than 5 km.
The FC switch buffer at either end is
•
less than 128 bytes.
If distance extension is enabled, the Fibre
Channel switch must be set to Interop or
Open Fabric mode, depending on the
switch. By default, the MXP_MR_2.5G/
MXPP_MR_2.5G card interoperates with
the Cisco Multilayer Director Switch
(MDS) storage products.
(Available only when distance extension
is enabled). If checked, enables the node
to detect the transmit credits from a
remote node. Credits are used for link
flow control and for Extended Link
Protocol (ELP) login frames between
Fibre Channel/FICON switch E ports. If
distance extension is enabled, Cisco
recommends that you enable Auto Detect
Credits.
If Auto Detect Credits is not enabled, sets
the number of credits when an ELP login
frame setting is missing or if the ELP
login frame cannot be detected.
Chapter 5 Provision Transponder and Muxponder Cards
Options
1
•
2
•
Checked or unchecked
Checked or unchecked
Numeric. Values are 2 through 256 in
multiples of 2.
September 2005