I have stack of two Catalyst 3750.
3750E reports SNMP temperature from 33 to 34 degrees Celsius but 3750G from 44 to 46 degrees Celsius.
Bandwidth utilization is very low. Average CPU is at 8 % but see graph CPU% per hour at the bottom of this post.
There's no problem with air conditioning, in the same rack I have another stack of two 3750G + 3750E, all of them run at 33-36 degrees Celsius.
.iso.org.dod.internet.private.enterprises.9.9.13.1.3.1.3.1006): 34
.iso.org.dod.internet.private.enterprises.9.9.13.1.3.1.3.2005): 45
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 54 WS-C3750E-48TD 12.2(58)SE1 C3750E-UNIVERSALK9-M
2 52 WS-C3750G-48TS 12.2(58)SE1 C3750-IPSERVICESK9-M
#sh env all
FAN is OK
SYSTEM TEMPERATURE is OK
System Temperature Value: 34 Degree Celsius
System Temperature State: GREEN
Yellow Threshold : 49 Degree Celsius
Red Threshold : 59 Degree Celsius
SW PID Serial# Status Sys Pwr PoE Pwr Watts
--- ------------------ ---------- --------------- ------- ------- -----
1 C3K-PWR-265WAC DTN1434C0J4 OK Good N/A 265/0
2 Built-in Good
SW Status RPS Name RPS Serial# RPS Port#
-- ------------- ---------------- ----------- ---------
1 <> <>
2 Not Present <>
#sh processes cpu history
11111 11111 11111
888800000999999999900000777777777777777888887777799999111117
100
90
80
70
60
50
40
30
20
10 **********************************************************
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
CPU% per second (last 60 seconds)
111111111111111111111111311151111111111111111111111111111111
102222212111211114022011411121121112222123322312211112212120
100
90
80
70
60
50 *
40 *
30 * *
20 * *
10 ##########################################################
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
CPU% per minute (last 60 minutes)
* = maximum CPU% # = average CPU%
1 1 1
563740465576454536364644446740547553555455355575456547046555564676573655
636970814841990881711665938210894914449986806169722643036431023531456083
100 * * *
90 * * *
80 * * * * * *
70 * * * * ** * * * ** * ** *
60 ** * * * *** * * * * * ** ** ** * ** * ** ** ** * * *** * *
50 ** *********** * * * **** ** ****** ****** ********* ** ****** ***** *
40 *********************************** **********************************
30 **********************************************************************
20 **********************************************************************
10 ######################################################################
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7..
0 5 0 5 0 5 0 5 0 5 0 5 0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%
#sh processes cpu sorted 5min
CPU utilization for five seconds: 10%/0%; one minute: 8%; five minutes: 8%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
126 447180980 49170880 9094 1.59% 1.64% 1.62% 0 hpm counter proc
167 109944910 698588081 157 0.31% 0.35% 0.47% 0 Hulc LED Process
179 84996706 4662249 18230 0.47% 0.34% 0.32% 0 HQM Stack Proces
4 62844850 4741741 13253 1.59% 0.35% 0.25% 0 Check heaps
10 43883317 389594 112641 0.00% 0.23% 0.17% 0 Licensing Auto U
180 32962498 18621725 1770 0.15% 0.15% 0.14% 0 HRPC qos request
122 53664999 559847454 95 0.15% 0.11% 0.13% 0 hpm main process
229 76268968 377743182 201 0.00% 0.04% 0.05% 0 Spanning Tree
140 3133 1408 2225 0.31% 0.11% 0.04% 1 SSH Process
52 8126359 4687051 1733 0.15% 0.03% 0.04% 0 Compute load avg
127 15239999 51063872 298 0.00% 0.06% 0.04% 0 HRPC pm-counters
83 10322373 284811481 36 0.00% 0.07% 0.02% 0 RedEarth Tx Mana
332 7519877 15625030 481 0.00% 0.04% 0.00% 0 VLAN Manager
367 40491058 5377045 7530 0.00% 0.04% 0.00% 0 SNMP ENGINE
53 10561705 396600 26630 0.00% 0.04% 0.00% 0 Per-minute Jobs
43 7505901 4044057 1856 0.15% 0.03% 0.00% 0 Net Background
292 4700726 540391 8698 0.00% 0.02% 0.00% 0 IGMPQR
256 2695462 3448235 781 0.15% 0.01% 0.00% 0 XDR mcast
168 360047 17133364 21 0.00% 0.01% 0.00% 0 HL3U bkgrd proce
242 2319158 23247875 99 0.00% 0.02% 0.00% 0 PI MATM Aging Pr
