IBM 2109 Service Guide - Page 120

frames. If any pair of ports are not properly connected improperly seated or, bad GBICs or cables

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Note: All ports on the switch must be connected if GBIC mode is disabled, or else the switch shows an error condition. When running the crossPortTest command, you must set the operating mode value to 0 or 1. Modes 2 and 3 do not send out the extended link parameters (ELP) used to discover switches. If the ELP is not sent, the switch does not know that the port is connected to another port on the same switch and the test fails. The crossPortTest behaves differently according to the modes activated as follows: 1. switchEnabled or switchDisabled mode: a. Online mode: In the Online mode the switch is enabled before executing the test. Online mode only tests ports that are cable loopbacked to ports in the same switch. Ports that are connected outside of the switch under test are ignored. To run, the test must find at least one port (if singlePortAlso is active) or two ports (if singlePortAlso [default] is not active) cable loopbacked to each other. If this criteria is not met, the following message is displayed in the Telnet shell: Need at least 1 port(s) connected to run this test. OR Need at least 2 port(s) cross-connected to run this test. b. Offline mode: In the Offline mode, the switch is disabled before executing the test, Offline mode tests and expects that all ports are cable loopbacked to similar ports in the same switch. If one or more ports are found not connected, the test aborts. The test determines which port is connected to which port by transmitting frames. If any pair of ports are not properly connected (improperly seated or bad GBICs or cables, or improper connection of SWL to LWL), the following message is displayed in the Telnet shell: One or more ports is not active, please double check fibres on all ports. 2. singlePortAlso mode: The singlePortAlso mode is specified by executing the crossPortTest command with a value of 1 in the second argument. For example. sw:admin> crossPortTest 0, 1 In this mode, the crossPortTest command allows a port to be cable loopbacked to itself (port M is connected to port M). The command also allows the port to be cross-connected (port M is connected to port N). This procedure isolates bad ports. 3. GBIC mode: Note: Make sure that you reset GBIC mode before returning the machine to the customer. The GBIC mode is activated by executing the following command before executing the crossPortTest command: 104 IBM SAN Fibre Channel Switch: 2109 Model S16 Installation and Service Guide

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Note:
All ports on the switch must be connected if GBIC mode is disabled, or else
the switch shows an error condition. When running the
crossPortTest
command, you must set the operating mode value to 0 or 1. Modes 2 and 3
do not send out the extended link parameters (ELP) used to discover
switches. If the ELP is not sent, the switch does not know that the port is
connected to another port on the same switch and the test fails.
The
crossPortTest
behaves differently according to the modes activated as follows:
1.
switchEnabled or switchDisabled mode:
a.
Online mode:
In the Online mode the switch is enabled before executing the test. Online
mode only tests ports that are cable loopbacked to ports in the same switch.
Ports that are connected outside of the switch under test are ignored. To
run, the test must find at least one port (if singlePortAlso is active) or two
ports (if singlePortAlso [default] is not active) cable loopbacked to each
other. If this criteria is not met, the following message is displayed in the
Telnet shell:
Need at least 1 port(s) connected to run this test.
OR
Need at least 2 port(s) cross-connected to run this test.
b.
Offline mode:
In the Offline mode, the switch is disabled before executing the test, Offline
mode tests and expects that
all
ports are cable loopbacked to similar ports
in the same switch. If one or more ports are found not connected, the test
aborts.
The test determines which port is connected to which port by transmitting
frames. If any pair of ports are not properly connected (improperly seated or
bad GBICs or cables, or improper connection of SWL to LWL), the following
message is displayed in the Telnet shell:
One or more ports is not active, please double check fibres on all ports.
2.
singlePortAlso mode:
The singlePortAlso mode is specified by executing the
crossPortTest
command
with a value of 1 in the second argument. For example.
sw:admin> crossPortTest 0, 1
In this mode, the
crossPortTest
command allows a port to be cable loopbacked
to itself (port M is connected to port M). The command also allows the port to
be cross-connected (port M is connected to port N). This procedure isolates bad
ports.
3.
GBIC mode:
Note:
Make sure that you reset GBIC mode before returning the machine to the
customer.
The GBIC mode is activated by executing the following command before
executing the
crossPortTest
command:
104
IBM SAN Fibre Channel Switch: 2109 Model S16 Installation and Service Guide