[mrtg] MRTG Graphs not Refreshing

Mohammad Hassan Mohammad.Hassan at hughes.com
Tue Dec 30 20:40:50 CET 2014

Hey everyone,

Looks like in fixing one problem, I've introduced another. The following tunnel interface is indicating that it is updating the graphs but the data is not showing on the graph:

System:                AC5-RID-RTR-02 in Germantown NOC
Description:        Tu0 Connected to RITE AID HQ
ifType: ethernetCsmacd (6)
ifName:                Tu0
Max Speed:        50 Mbits/s
Ip:  ()
The statistics were last updated Tuesday, 30 December 2014 at 14:35

                Max       Average               Current
In            0.0 b/s (0.0%)    0.0 b/s (0.0%)    0.0 b/s (0.0%)
Out        0.0 b/s (0.0%)    0.0 b/s (0.0%)    0.0 b/s (0.0%)

>From the router:
Tunnel0 is up, line protocol is up
  Hardware is Tunnel
  Description: VPN Tunnel To Rite Aid HQ
  Internet address is
  MTU 17916 bytes, BW 100 Kbit/sec, DLY 50000 usec,
     reliability 255/255, txload 255/255, rxload 255/255
  Encapsulation TUNNEL, loopback not set
  Keepalive set (1 sec), retries 10
  Tunnel source, destination
  Tunnel protocol/transport GRE/IP
    Key disabled, sequencing disabled
    Checksumming of packets disabled
  Tunnel TTL 255, Fast tunneling enabled
  Tunnel transport MTU 1476 bytes
  Tunnel transmit bandwidth 50000 (kbps)
  Tunnel receive bandwidth 50000 (kbps)
  Last input 00:00:20, output 00:00:00, output hang never
  Last clearing of "show interface" counters 03:44:38
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1560442
  Queueing strategy: fifo
  Output queue: 0/0 (size/max)
  30 second input rate 3514000 bits/sec, 1576 packets/sec
  30 second output rate 3922000 bits/sec, 1677 packets/sec
     25452326 packets input, 9399327018 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     26710278 packets output, 6849102549 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out

Any advice will be greatly appreciated!

Mohammad Hassan

From: Courtney, Wrolf [mailto:Wrolf.Courtney at mtahq.org]
Sent: Tuesday, December 30, 2014 11:19 AM
To: Mohammad Hassan; mrtg at lists.oetiker.ch
Subject: RE: MRTG Graphs not Refreshing

Try running "LANG=C mrtg yourfile.cfg", see if you get any errors. Check your WorkDir in those .cfg files. Make sure your .png and .html files have new timestamps. Check that your index.html files point to the right directory - you can rerun indexmaker using the command line in the index.html.


From: mrtg [mailto:mrtg-bounces+wrolf.courtney=mtahq.org at lists.oetiker.ch] On Behalf Of Mohammad Hassan
Sent: Tuesday, December 30, 2014 11:14 AM
To: mrtg at lists.oetiker.ch<mailto:mrtg at lists.oetiker.ch>
Subject: [mrtg] MRTG Graphs not Refreshing

Hi all,

I just joined this community! Been troubleshooting this issue for a few days now and needed some professional help. Thanks in advance, to any suggesting you guys may provide!

A Linux server was configured for MRTG using cfgmaker more than a year ago. It continued to work as desired until earlier year.

There are some graphs being polled from a router that are not updating. The last refresh date for each graph that is not refreshing is unique and within the last few months. The strange is, there are graphs that are not updating and those that are updating from the same router.

Please see the following:

Actions taken:

*         Restart crond, httpd and snmp services

*         Reload the Linux server

o   Strange thing happened here: Those graphs that have been static and not updating remained on the http page, those that were still dynamically updating were not showing anything until crond and httpd was restared.

Any help would be much appreciated!!

Update: Graphs are updating now but the "Daily Graph," others are remaining static. Also, the last update date has not updated.

Mohammad Hassan

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