I only learned about this recently, and I can't actually find any
mention of it in the documentation so I thought I'd post here in case
it's not well known.
The C8000 (and presumably similar vintage hardware like the rp3440,
etc) have a BMC (baseboard management controller) that is active when
the system is powered. When attached to the serial console, you can
press ESC ( and you will be able to interact with the BMC:
(
cli>help
CLI Commands:
C [<passwordstring>] - Change Password
CON - Display Console selection
FPL - Read Forward Progress Log
H - Help (this text)
I <ipmi command data> - Send any IPMI message
req fmt: rsSA netfnlun chk1 rqSWID rqSeq cmd [data] chk2
resp fmt: rqSWID netfnlun chk3 rsSa rqSeqrsLun cmd ccode [data] chk4
INFO - Display BMC FW Revision
IPMI <ipmi command data> - Send any IPMI message
req fmt: netfnlun cmd [data]
resp fmt: ccode [data]
P [0,1] - Power Control
Q - Quit/Logout
RS [s] - Reset System [and switch to sys console]
SD - Read SDR Repository
SE - Read System Event Log
TOC [s] - Send an INIT/TOC [and switch to sys console]
cli>
I've found this most useful for being able to remotely reboot (RS
command) and power on/off (P command) the system.
Pressing ESC ) "reconnects" you to the system's serial console.
The C8000 supports IPMI, and I assume you can do a lot of these same
things over the built-in e1000 LAN interface once configured. I
haven't tried to do that yet.
Hope this is useful for someone.
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