I've got a weird problem. I've run mrtg (and rtg) against Junipers routers, cisco switches, and several other network device for many years. I generate my own mrtg config files, create my own rrd files, and have custom graphing routines. But I've never run into this problem.
We just add some cisco ios switches to our network. They're configured with several "unrouted vlan". I can usually traffic monitor unrouted vlans without problem. But on these switches, the unrouted vlans have ifInOctet counters but no ifOutOctet counters. Example: Look at ifindex 290 and 291. I included 288 and 289 for reference. ifindex: IF-MIB::ifIndex.288 = INTEGER: 288 IF-MIB::ifIndex.289 = INTEGER: 289 IF-MIB::ifIndex.290 = INTEGER: 290 IF-MIB::ifIndex.291 = INTEGER: 291 description IF-MIB::ifDescr.288 = STRING: FastEthernet7/47 IF-MIB::ifDescr.289 = STRING: FastEthernet7/48 IF-MIB::ifDescr.290 = STRING: unrouted VLAN 981 IF-MIB::ifDescr.291 = STRING: unrouted VLAN 982 ifInOctets: IF-MIB::ifInOctets.288 = Counter32: 0 IF-MIB::ifInOctets.289 = Counter32: 0 IF-MIB::ifInOctets.290 = Counter32: 2910395469 IF-MIB::ifInOctets.291 = Counter32: 130332220 ifOutOctets: IF-MIB::ifOutOctets.288 = Counter32: 0 IF-MIB::ifOutOctets.289 = Counter32: 0 That's it.... there are no more ifoutoctet entries..... And of course mrtg poller is complaining that the ifOutOctets does not exist...... Have anyone ever seen this? The only fix I see is to change the Target line for these entries to query the ifInOctets twice. Weird, Gene Titus -- Gene Titus Sr Operating System Specialist The Office of Telecommunication Services The University of Texas at Austin
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