Nagios Support Forum

Hello Team,

We are monitoring Network devices in nagios and for one of the Switch interface on daily basics we used to share the report and Network Team have noticed and highlighted issue where on 17th Nov 15:10 to 15:40 UK time there is no log data and its showing zero utilization. PFA for your reference.

Also, we have did basic help check and checked .rrd file is updating up to date and time.

Network team have provided utilization on the device only for 5 mins data rate.

like : 5 minute input rate 21048000 bits/sec, 6985 packets/sec
5 minute output rate 83492000 bits/sec, 10336 packets/sec


xxxxxxxxxxx#sh run int gi 5/0/48


configuration...

Current configuration : 265 bytes
!
interface GigabitEthernet5/0/48
description ### A2-010-144 # CBB New Primary ###
switchport access vlan 252
switchport mode access
storm-control broadcast level 0.10
storm-control multicast level 0.10
storm-control action trap
spanning-tree portfast
end

xxxxxxxxxxxx#sh int gi 5/0/48
GigabitEthernet5/0/48 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is f87b.2048.23b0 (bia f87b.2048.23b0)
Description: ### A2-010-144 # CBB New Primary ###
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 21/255, rxload 5/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1275486
Queueing strategy: fifo
Output queue: 0/40 (size/max)

5 minute input rate 21048000 bits/sec, 6985 packets/sec
5 minute output rate 83492000 bits/sec, 10336 packets/sec


32916478268 packets input, 12343905284806 bytes, 0 no buffer
Received 3865689 broadcasts (3865624 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3865624 multicast, 0 pause input
0 input packets with dribble condition detected
56914231400 packets output, 51885953031473 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

File log:

[root@xxxxx mrtg]# ll 10.xxx.xxx.xx_323.rrd
-rwxrwxr-x 1 apache nagios 105312 Nov 24 11:42 10.xxx.xxx.xx_323.rrd

Hi @vignesha,

Typically, when there are gaps like this in the performance graphs it's caused by a load issue on the XI server (server is unable to process incoming performance data). Please follow the steps in the knowledgebase article below to increase the timeout and load_threshold settings for performance graphs.

Nagios XI - Performance graph Problems

I would also recommend looking directly in the nagios logs for the incoming check results for this interface during those times. You'll find the daily archived logs in the following folder.
Regards,
Benjamin