Tl Ports For Private Loops; About Tl Ports - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

TL Ports for Private Loops

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
TL Ports for Private Loops
Private loops require setting the interface mode to TL. This section describes TL ports and includes the
following sections:
•
•
•

About TL Ports

TL port mode is not supported on the following:
•
•
•
•
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
Follow these guidelines when configuring private loops:
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•
•
•
•
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Table 20-6
shows examples of TL port translation support.
Table 20-6
Translation from
Private initiator
Private initiator
Private initiator
Public initiator — N port
Public initiator — NL port
Cisco MDS 9000 Family CLI Configuration Guide
20-18
About TL Ports, page 20-18
Configuring TL Ports, page 20-19
About TL Port ALPA Caches, page 20-19
Generation 2 switching module interfaces
Cisco MDS 9124 Fabric Switch
Cisco Fabric Switch for HP c-Class BladeSystem
Cisco Fabric Switch for IBM BladeCenter
A maximum of 64 fabric devices can be proxied to a private loop.
Fabric devices must be in the same zone as private loop devices to be proxied to the private loop.
Each private device on a TL port may be included in a different zone.
All devices on the loop are treated as private loops. You cannot mix private and public devices on
the loop if the configured port mode is TL.
The only FC4-type supported by TL ports is SCSI (FCP).
Communication between a private initiator to a private target on the same private loop does not
invoke TL port services.
lists the TL port translations supported in Cisco MDS 9000 Family switches.
Supported TL Port Translations
20-3.
Translation to
Private target
Public target — N port
Public target — NL port
Private target
Private target
Chapter 20 Configuring Interfaces
Figure 20-7
Example
From I1 to T1 or vice versa
From I1 to T2 or vice versa
From I4 to T3 or vice versa
From I2 to T1 or vice versa
From I3 to T1 or vice versa
OL-16184-01, Cisco MDS SAN-OS Release 3.x
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