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Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x
Chapter 2 Configuring Interfaces
Information About Interfaces
TL Ports
Private loop devices refer to legacy devices that reside on arbitrated loops. These devices are not aware
of a switch fabric because they only communicate with devices on the same physical loop. The legacy
devices are used in Fibre Channel networks, and devices outside the loop may need to communicate with
them. The communication functionality is provided through TL ports. See the
“Interface Modes” section
on page 2-2.
TL port mode is not supported on the following hardware:
• Generation 2 switching module interfaces
• Cisco MDS 9124 Fabric Switch
• Cisco Fabric Switch for HP c-Class BladeSystem
• Cisco Fabric Switch for IBM BladeCenter
Table 2-6 lists the TL port translations supported in Cisco MDS 9000 Family switches.
CWDM-1590 c1590
CWDM-1610 c1610
Table 2-5 SFP Transmitter Acronym Definitions (continued)
Definition Acronym
Standard transmitters defined in the GBIC specifications
Ta b l e 2-6 Supported TL Port Translations
Translation from Translation to Example
Private initiator Private target From I1 to T1 or vice versa
Private initiator Public target — N port From I1 to T2 or vice versa
Private initiator Public target — NL port From I4 to T3 or vice versa
Public initiator — N port Private target From I2 to T1 or vice versa
Public initiator — NL port Private target From I3 to T1 or vice versa
