User's Manual

Troubleshooting and Recovery 331
The trace log may also contain CMC firmware-specific error codes that are
related to the internal CMC firmware, not the managed system’s operating
system.
NOTE: The CMC will not echo an ICMP (ping) with a packet size larger than
1500 bytes.
Disabling a Forgotten Password
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
To perform management actions, a user with Administrator privileges is
required. The CMC software has a user account password protection security
feature that may be disabled if the administrator account password is
forgotten. If the administrator account password is forgotten, it can be
recovered using the PASSWORD_RSET jumper on the CMC board.
The CMC board has a two-pin password reset connector as shown in
Figure 11-1. If a jumper is installed in the reset connector, the default
administrator account and password is enabled and set to the default values
of username: root and password: calvin. The administrator account will be
reset regardless if the account has been removed, or if the password was
changed.
NOTE: Ensure the CMC module is in a passive state before you begin.
1 Press in the CMC release latch on the handle and rotate the handle away
from the module front panel. Slide the CMC module out of the enclosure.
NOTE: Electrostatic discharge (ESD) events can harm electronic components
inside your equipment. Under certain conditions, ESD may build up on your body or
an object, and then discharge into another object, such as your CMC. To prevent
ESD damage, you should discharge static electricity from your body before you
interact with any of your equipment’s internal electronic components.
2 Remove the jumper plug from the password reset connector, and insert a 2-
pin jumper to enable the default administrator account. See Figure 11-1 to
locate the password jumper on the CMC board.