Troubleshooting guide

118 Advanced System Diagnostics and Troubleshooting Guide
Index
defined 27
error detection mechanisms 28
fast-path checksum error 29
fast path
checksum errors 29
defined 27
forwarding 29
FastPOST 49
FDB
background scan process 25
scan diagnostic 88
field notices 116
forwarding ASICs 28
H
hardware architecture
Alpine 22
BlackDiamond 16
Summit 23
I
INT 34
invasive diagnostics 50
L
limited operation mode 64, 111
M
MAC device layer 28
maintenance mode 40
management bus. See slow path
Management Switch Fabric Module. See MSM
manual system dump 46
mean time to repair. See MTTR
memory mapping 53
memory scanning 53
minimal operation mode 112
MSM
recovery action 40
redundancy 20
MSM-3 21, 39
MTTR 12
N
non-invasive diagnostics 50
P
packet bus. See PBUS
packet checksum 26
packet error events 26, 30
packet memory
checksums 28
scan test 25, 58
passive tests 50
PBUS. See also fast path
permanent errors 26
PHY port layer 28
PM. See packet memory
POST
CPU register ASIC test 56
introduced 12
test routines 56
Power-on self test. See POST
R
Real Time Clock (RTC) 56
reboot 40, 41
recovery action
maintenance mode 40
MSM failover 40
reboot 40, 41
shutdown 40
system dump 40
response action
alarm-level 71
auto-recovery 71
root task 41
runtime diagnostics
"e" series switches 59
"i" series switches 57
S
severity level
CRIT 34
WARN 34
shutdown 40
slow path
checksum errors 29
defined 27
SMMi 22
soft-state errors 26
software exception handling
critical task exception 40, 41
maintenance mode 40
MSM failover 40
reboot 40, 41
shutdown 40
system dump 40
Summit systems
architecture (figure) 23
CPU subsystem 23
hardware architecture 23
I/O subsystem 23
non-modular "i"-series stackables 23
switching fabric subsystem 23
SYSLOG file 105
system dump
automatic 45
manual 46
system health check 25
alarm-level response action 71
auto-recovery response action 71
configuration and use 70
defined 26
described 13
states
CHECK 70
INITIALIZATION 70
SEND 70
SNC 70
WAIT 70
system log 105
system tasks
root task 41