21-18
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 21 DLPs A400 to A499
DLP-A439 Change Distance Extension Port Settings for the FC_MR-4 Card
Step 5 Return to your originating procedure (NTP).
DLP-A439 Change Distance Extension Port Settings for the FC_MR-4 Card
Step 1 In node view, double-click the FC_MR-4 card where you want to change the port settings.
Step 2 Click the Provisioning > Port > Distance Extension tabs.
Step 3 Modify any of the settings described in Table 21-4.
Purpose This task changes the distance extension parameters for FC_MR-4 ports.
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 Provisioning or higher
Table 21-4 FC_MR-4 Card Distance Extension Port Settings
Parameter Description Options
Port (Display only.) The card port number. 1 through 4
Enable
Distance
Extension
If checked, allows additional distance by providing a
GFP-T based flow control scheme. It enables the node to be
a part of a Storage Area Network (SAN) with
long-distance, remote nodes. If left unchecked, the
remaining options are not available for editing. If Distance
Extension is enabled, set the connected Fibre Channel
switches to Interop or Open Fabric mode, depending on the
Fibre Channel switch. By default, the FC_MR card will
interoperate with the Cisco MDS storage products.
—
Auto Detect
Credits
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/fiber connectivity (FC/FICON)
Switch E ports.
—
Credits
Available
Sets the number of credits if an ELP login frame setting is
missing or if the ELP login frame cannot be detected.
Credits Available is editable only if Auto Detect Credits is
unchecked.
Note Longer distances between connected devices need
more credits to compensate for the latency
introduced by the long-distance link. The value
should never be greater than the number of credits
supported by the FC/FICON port.
Numeric. 2 through
256, multiples of 2 only
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