How to use SNMP to monitor Cat 4006 Back Plane

[Dan Loring]

We are seeing a lot of latency on our network, but if I look at the individual ports none of them are near to being maxed out.  I was told that I need to do an smnp walk to find out the MIB's on the back plane.  Can someone tell me how I would go about doing this so I can add this device to Cacti and I can see if the 4006 is our bottleneck.

Thanks,

Dan

[Latchum Naidu]

Hi Dan,

First of all you need to enable the snmp traps like below in the switch.

Switch(config)#  snmp-server enable traps
Switch(config)#  snmp-server host myhost.cisco.com public

And now permit the SNMP traps to the server say in your case the Cacti.

Switch(config)#set ip permit enable snmp
Switch(config)#set ip permit 192.168.1.0 255.255.255.0 snmp
Switch(config)#set ip permit 192.168.2.1 snmp

Hope this helps you.

Please rate the helpfull posts.
Regards,
Naidu.

[Dan Loring]

ok, I got the first command in okay

Cat4006> (enable) set snmp trap enable

All SNMP traps enabled.

But I cannot seem to find a way to set this

Switch(config)#  snmp-server host myhost.cisco.com public

[Latchum Naidu]

Hi,

Just apply the below command and see whether you go....

Switch(config)#  snmp-server host host_ip public

Hope this helps you.

Please rate the helpfull posts.

Regards,

Naidu.

[Dan Loring]

This must be an old version of the IOS because I cannot perform a config t, I have to use set commands, a lot of these commands are not there under set

Cat4006> (enable) set snmp ?

  access                     Set SNMP access group

  community                  Set SNMP community table

  group                      Set SNMP group

  notify                     Set SNMP notify

  rmon                       Set SNMP RMON

  rmonmemory                 Set SNMP memory usage limit for new RMON entries

  targetaddr                 Set SNMP targetaddr

  targetparams               Set SNMP targetparams

  trap                       Set SNMP trap information

  user                       Set SNMP user

  view                       Set SNMP view

[johnlloyd_13]

Hi Dan,

You could simply perform a traceroute towards the destination host you're experiencing latency issues. Also the show proc cpu and show mem stat hist could tell you if this device is the culprit.

Sent from Cisco Technical Support iPhone App

[Dan Loring]

Our network is pretty slow today, that si why I have the oportunity to look into this I can do the show proc cpu(see below) but show mem stat hist is not a valid command

Cat4006> (enable) sh proc cpu

CPU utilization for five seconds:  17.70%

                      one minute:  17.08%

                    five minutes:  17.02%

PID Runtime(ms) Invoked    uSecs    5Sec    1Min    5Min    TTY Process

--- ----------- ---------- -------- ------- ------- ------- --- ---------------

1   819582179   0          0         82.30%  82.92%  82.98% -2  Kernel and Idle

2   7           124        1000       0.00%   0.00%   0.00% -2  Flash MIB Updat

3   204201589   288279116  76000      0.47%   0.00%   0.00% -2  SynConfig

4   52828911    56814138   3000       0.21%   0.00%   0.00% -2  Statuspoll

5   11036629    141803678  2000       0.30%   0.00%   0.00% -2  PwrDevMsgUpd

6   658705      8570488    1000       0.00%   0.00%   0.00% -2  StatusPoll 5s

8   7           2          7000       0.00%   0.00%   0.00% -2  SecurityRx

9   167866      1786358    1000       0.00%   0.00%   0.00% -2  SWPoll64bCnt

10  3013357     42700249   2000       0.00%   0.00%   0.00% -2  Earl

11  326167      4286648    1000       0.00%   0.00%   0.00% -2  ProtocolFilter

12  109         81         9000       0.00%   0.00%   0.00% -2  telnetd

13  4210178     42697804   1000       0.15%   0.00%   0.00% -2  VtpTimer

14  0           1          0          0.00%   0.00%   0.00% -2  RMON AlarmTimer

15  0           1          0          0.00%   0.00%   0.00% -2  llcSSTPFlood

16  718560039   1514864931 2000       1.31%   1.92%   1.98% -2  gsgScpAggregati

17  930726      1744027    2000       0.15%   0.00%   0.00% -2  cdpd

18  190479636   42816758   52000      0.79%   0.00%   0.00% -2  cdpdtimer

19  56700317    42728913   3000       0.36%   0.00%   0.00% -2  SptTimer

20  315978519   43286407   19000      1.29%   1.92%   1.98% -2  SptBpduRx

21  58860289    42702569   18000      0.21%   0.00%   0.00% -2  SptBpduTx

22  63745594    416419390  11000      0.67%   0.00%   0.00% -2  ProtocolTimer

23  57403388    39436261   31000      0.88%   0.00%   0.00% -2  DTP_Rx

24  133560      243485     21000      0.00%   0.00%   0.00% -2  EthChnlRx

25  192189      346658     16000      0.00%   0.00%   0.00% -2  EthChnlConfig

26  28171299    421576038  2000       0.60%   0.00%   0.00% -2  sptHelper

27  0           1          0          0.00%   0.00%   0.00% -2  sptTraps

28  308813      4286667    1000       0.00%   0.00%   0.00% -2  ciscoRmonTimer

29  306529      4286669    1000       0.00%   0.00%   0.00% -2  ciscoUsrHistory

30  0           1          0          0.00%   0.00%   0.00% -2  rmonMediaIndep

31  0           1          0          0.00%   0.00%   0.00% -2  SnmpTraps

32  0           1          0          0.00%   0.00%   0.00% -2  Acct Send Bkg

33  837496      96361      29000      0.00%   0.00%   0.00% -2  dhcp_client

34  669         97         16000      0.00%   0.00%   0.00% -2  l2t_server

36  7962        94416      5000       0.00%   0.00%   0.00% -2  SysLogTask

37  3013150     42698295   1000       0.00%   0.00%   0.00% -2  pinggateA

38  137919756   1983522196 2000       0.43%   0.00%   0.00% -2  Authenticator_S

39  147         1208       1000       0.00%   0.00%   0.00% -2  dot1x_rx

40  6105325     93439028   2000       0.30%   0.00%   0.00% -2  Backend_Rx

41  138212243   1532777748 2000       0.43%   0.00%   0.00% -2  Backend_SM

143 1114306813  1514865015 13000      3.58%   3.92%   3.98% 0   Console

144 14615950    47131345   201000     0.00%   0.00%   0.00% -2  snmpdm

145 0           2          0          0.00%   0.00%   0.00% -2  VtpRx

146 36501155    47302002   34000      0.00%   0.00%   0.00% -2  THREAD

147 27200       1940       70000      0.60%   0.00%   0.00% 1084590484 telnet147

193 1825410610  2150544771 12124      4.51%   4.39%   4.38% 0   Packet forwardi

194 935620069   652065117  9103       2.49%   2.68%   2.68% 0   Switching overh

195 1923188734  1616999945 55839      4.60%   4.58%   4.52% 0   Admin overhead