Locate a Faulty Data Cable

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You must determine which data cable is faulty before you replace it.

Consider your first step.
- If you are at the switch, go to Step 2.
- If you are remote to the switch, go to Step 3.

At the rear of the switch, check the Link LEDs of the SFP+ and RJ-45 connectors.
For each cable connected to a known functional host, the Link LED should be on. See and RJ-45 Link LEDs.
- If the Link LED of the data cable is off, replace that cable.
  See Remove a Data Cable.
- If you cannot determine if a cable is faulty, go to Step 3.

Access the Oracle ILOM CLI.
See Accessing the SP.

Verify Ethernet connectivity.

Start the EMS console.

-> start /System/Networking/Switches/Switch_0/fs_cli
Are you sure you want to start /System/Networking/Switches/Switch_0/fs_cli
(y/n)? y
                 Management Switch for Oracle Fabric Interconnect F2-12
SEFOS login:

Log in to SEFOS.
```
SEFOS login: root
Password: password
SEFOS#
```
The default password is admin123.

Display the state of the Ethernet ports.

SEFOS# show interfaces status

Port        Status           Duplex   Speed       Negotiation     Capability
----        ------           ------   -----       -----------     ----------
Gi0/1       not connected    Half     -           Auto            Auto-MDIX on
Gi0/2       connected        Full     1 Gbps      Auto            Auto-MDIX on
Gi0/3       connected        Full     1 Gbps      Auto            Auto-MDIX on
Gi0/4       not connected    Half     -           Auto            Auto-MDIX on
Gi0/5       not connected    Half     -           Auto            Auto-MDIX on
Gi0/6       connected        Full     1 Gbps      Auto            Auto-MDIX on
Gi0/7       not connected    Half     -           Auto            Auto-MDIX on
...
Gi0/13      connected        Full     1 Gbps      Auto            Auto-MDIX on
...
Gi0/23      not connected    Half     -           Auto            Auto-MDIX on
Gi0/23      connected        Full     1 Gbps      Auto            Auto-MDIX on
Gi0/25      connected        Full     1 Gbps      Auto            Auto-MDIX on
Gi0/26      connected        Full     1 Gbps      Auto            Auto-MDIX on
Ex0/1       not connected    Full     10 Gbps     No-Negotiation  Auto-MDIX on
Ex0/2       not connected    Full     10 Gbps     No-Negotiation  Auto-MDIX on
SEFOS#

In the output, Port is the port as seen on the rear panel. Ports Gi0/25 and Gi0/26 are internal to the switch architecture. Ports Ex0/1 and Ex0/2 are the two SFP+ uplink ports. The Status is the state of the port. The Duplex, Speed, and Negotiation are the parameters of the link. The Capability indicates if auto-crossover capability is on.

If the status of a known-connected port is anything other than connected, replace the cable attached to that port.
See Remove a Data Cable.

Exit the EMS console.

SEFOS# exit
Connection closed by foreign host

Entering character mode
Escape character is '^]'.
start: The session with /System/Networking/Switches/Switch_0/fs_cli has ended.
->

Verify IB and gateway connectivity.

Start the host.

-> start /HOST/console
Are you sure you want to start /HOST/console (y/n)? y
 
Serial console started.  To stop, type ESC (

Press Enter.
```
[user@hostname ~]# 
```
where:
- user is the current username.
- hostname is the host name of the SCP.
Switch to user admin with password admin.
```
[user@hostname ~]# su admin
 Welcome to IBOS Controller
 Copyright (c) 2012-2015 Oracle Corp.  All rights reserved.
 Enter "help" for information on available commands.
 Enter the command "show system copyright" for licensing information
admin@hostname[OFOS] 
```
Note - From here forward in this document, the admin@hostname[OFOS] prompt is replaced with simply [OFOS].

If this is the first time OFOS is accessed, the OFOS configuration wizard might start. If this happens, refer to Run the Oracle Fabric OS Configuration Wizard in Oracle Fabric Interconnect F2-12 Installation Guide.

Display the state of the gateway ports.

[OFOS] show ioports
name     type                   state                descr     v-resources 
------------------------------------------------------------------------------
0/1      gwEthernet10GbPort     up/indeterminate               0 
0/2      gwEthernet10GbPort     up/indeterminate               0 
0/3      gwEthernet10GbPort     up/indeterminate               0 
0/4      gwEthernet10GbPort     up/indeterminate               0 
0/5      gwEthernet10GbPort     up/indeterminate               0 
0/6      gwEthernet10GbPort     up/indeterminate               0 
0/7      gwEthernet10GbPort     up/indeterminate               0 
0/8      gwEthernet10GbPort     up/indeterminate               0 
8 records displayed
[OFOS]

In the output, the name is the port number as seen on the rear panel. The state is of the local port/peer port. The descr is the node descriptor of the peer port. The v-resources are the number of VLANs and VNICs supported on that port.

Display the state of the IB ports.

[OFOS] show infiniband-port
name             state               mode_state             guid 
------------------------------------------------------------------------------
0/1              up/down             switching              0 
0/2              up/down             switching              0 
0/3              up/down             switching              0 
0/4              up/down             switching              0 
.
.
.
0/27             up/down             switching              0 
0/28             up/down             switching              0 
0/29             up/down             switching              0 
0/30             up/down             switching              0 
30 records displayed
[OFOS]

In the output, the name is the port number as seen on the rear panel. The state is of the local port/peer port. The mode_state is the condition of the link. The guid is the GUID of the peer port.

If in the output of these commands a port is identified as being in a down state, or if a link mode_state is other than switching, replace the cable attached to that port.
See Remove a Data Cable.
Exit the host console.
Type exit and press the Enter key, then press the Esc key and type (.
```
[OFOS] exit
[root@nsn156-168 ~]#
Serial console stopped.
->
```

If you are unable to determine if a data cable is faulty, seek further information.
See Detecting and Managing Faults.

Locate a Faulty Data Cable

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