Qlogic 5800V Series User Manual

6–Managing Ports
Using the Extended Credits Wizard
59266-01 B 6-21
 25km at 2Gbps (30÷1.2)
 12km at 4Gbps (30÷2.4)
 6km at 8Gbps (30÷4.8)
Extending credits requires a minimum cable length that is dependent on
transmission speed, but is independent of the number of credits borrowed.
Extending credits using short cables can cause excessive port resets. Table 6-14
describes the minimum cable lengths for a port with extended credits.
The Extended Credit wizard leads you through the following process to extend
credits based on transmission distance requirements. To extend credits:
1. Select a switch from the fabric tree.
2. On the Wizards menu, click Extended Credit Wizard to view the Extended
Credit Wizard dialog box (Figure 6-6).
 Extended Distance—explains the concepts and principles of extending
port credits. Click Next.
 Extended Distance Requirements—specify speed and distance
requirements for each port. Click Next.
 Designate Donor Ports—select available ports, and click >> to move
the port into the Selected Donor Port column. Match the number of
ports needed with the number of designated donor ports. Click Next.
 Verify requested changes—review the extended distance requests and
the selected donor ports. Click Finish to apply the changes and
redistribute the credits.
Table 6-14. Extended Credits—Minimum Cable Lengths
Transmission Speed Minimum Cable Length
1Gbps 3km
2Gbps 1.5km
4Gbps 0.75km
8Gbps 0.37km
NOTE:
Supported distances are also dependent on the selection of SFP (shortwave
or longwave) and the type of fibre cable.

Qlogic 5800V Series Specifications

General

Brand	Qlogic
Model	5800V Series
Category	Switch
Language	English