/var/lib/mrtg/xx.xxx.xxx.xxx_xx.rrd does not exist.

[ssax]

It's because the interface is administratively down in your /etc/mrtg/conf.d/10.168.168.166.cfg file:

Code: Select all

### Interface 26 >> Descr: 'GigabitEthernet1/0/19' | Name: 'Gi1/0/19' | Ip: 'No Ip' | Eth: 'XX-XX-XX-XX-XX-93' ###
### The following interface is commented out because:
### * it is administratively DOWN

If that interface is no longer admin down, you can edit /etc/mrtg/conf.d/10.168.168.166.cfg and uncomment the interface so it looks like the ones that aren't administratively down to start monitoring it and the backend RRD file will be created on the next run.