[SNMP/MRTG] How to Graph Summary of Multiple MIBs over than 650 Mbps
Posted by admin on July 27th, 2010
============== Captured from Cisco Web FAQ ==============
Q. When should 64-bit counters be used?
A. RFC 2233 leavingcisco.com adopted expanded 64-bit counters for high capacity interfaces in which 32-bit counters do not provide enough capacity and wrap too fast.
As the speed of network media increases, the minimum time in which a 32-bit counter wraps decreases. For example, a 10 Mbps stream of back-to-back, full-size packets causes ifInOctets to wrap in just over 57 minutes. At 100 Mbps, the minimum wrap time is 5.7 minutes, and at 1 Gbps, the minimum is 34 seconds.
Note: The SNMP counters wrap, the command line interface (CLI) counters do not.
For interfaces that operate at 20,000,000 (20 million) bits per second or less, you must use 32-bit byte and packet counters. For interfaces that operate faster than 20 million bits per second, and slower than 650,000,000 bits per second, you must use 32-bit packet counters and 64-bit octet counters. For interfaces that operate at 650,000,000 bits/second or faster, 64-bit packet and octet counters must be used.
Correspondingly, Cisco IOS® Software does not support 64-bit counters for interface speeds of less than 20 Mbps. This means that 64-bit counters are not supported on 10 Mb Ethernet ports, only 100 Mb Fast-Ethernet and other high speed ports support 64-bit counters.
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Lately I have a problem with Adding multiple MIB traffic from many devices with many interfaces.
The purpose is to summarize all of interface traffic volume.
The problem I have faced was : if the total / summary of all traffic volume more than 650 Mbps [650,000,000 bit/seconds], the graph starts to drop / broken / not smooth.
So We never saw the real of total traffic in that graph.
By Default my mrtg engine use snmp v1 to capture dan plot MIB into the graph.
According to above Cisco Website, I need to change the 32 bit counter to 64 bit counter to graph the traffic above 650 Mbit per second.
Googling around, We have to add the suffix at the end of MIB in MRTG CFG file with “:::::2″ which means that my engine is now capturing 64 bit counter information [MIB] with version 2.
There you go 
Target[total-traffic]: 10001:public@192.168.3.250:::::2 + 10002:public@192.168.3.250:::::2 + 10003:public@192.168.3.250:::::2 + 10004:public@192.168.3.250:::::2 + 10005:public@192.168.3.250:::::2 + 10006:public@192.168.3.250:::::2 + 10007:public@192.168.3.250:::::2 + 10008:public@192.168.3.250:::::2 + 10009:public@192.168.3.250:::::2 + 10010:public@192.168.3.250:::::2 + 10011:public@192.168.3.250:::::2 + 10012:public@192.168.3.250:::::2 + 10013:public@192.168.3.250:::::2 + 10014:public@192.168.3.250:::::2 + 10015:public@192.168.3.250:::::2 + 10016:public@192.168.3.250:::::2 + 10017:public@192.168.3.250:::::2 + 10018:public@192.168.3.250:::::2 + 10019:public@192.168.3.250:::::2 + 10020:public@192.168.3.250:::::2 + 10021:public@192.168.3.250:::::2 + 10022:public@192.168.3.250:::::2 + 10023:public@192.168.3.250:::::2 + 10024:public@192.168.3.250:::::2 + 10025:public@192.168.3.250:::::2 + 10026:public@192.168.3.250:::::2 + 10027:public@192.168.3.250:::::2 + 10028:public@192.168.3.250:::::2 + 10029:public@192.168.3.250:::::2 + 10030:public@192.168.3.250:::::2 + 10031:public@192.168.3.250:::::2 + 10032:public@192.168.3.250:::::2 + 10033:public@192.168.3.250:::::2 + 10034:public@192.168.3.250:::::2 + 10035:public@192.168.3.250:::::2 + 10036:public@192.168.3.250:::::2 + 10037:public@192.168.3.250:::::2 + 10038:public@192.168.3.250:::::2 + 10039:public@192.168.3.250:::::2 + 10040:public@192.168.3.250:::::2 + 10041:public@192.168.3.250:::::2 + 10042:public@192.168.3.250:::::2 + 10043:public@192.168.3.250:::::2 + 10044:public@192.168.3.250:::::2 + 10045:public@192.168.3.250:::::2 + 10046:public@192.168.3.250:::::2 + 10047:public@192.168.3.250:::::2 + 10048:public@192.168.3.250:::::2 + 10101:public@192.168.3.250:::::2 + 10102:public@192.168.3.250:::::2 + 10103:public@192.168.3.250:::::2 + 10104:public@192.168.3.250:::::2 + 1:public@192.168.3.252:::::2 + 5001:public@192.168.3.252:::::2 + 10001:public@192.168.3.252:::::2 + 10002:public@192.168.3.252:::::2 + 10003:public@192.168.3.252:::::2 + 10004:public@192.168.3.252:::::2 + 10005:public@192.168.3.252:::::2 + 10006:public@192.168.3.252:::::2 + 10007:public@192.168.3.252:::::2 + 10008:public@192.168.3.252:::::2 + 10009:public@192.168.3.252:::::2 + 10010:public@192.168.3.252:::::2 + 10011:public@192.168.3.252:::::2 + 10012:public@192.168.3.252:::::2 + 10013:public@192.168.3.252:::::2 + 10014:public@192.168.3.252:::::2 + 10015:public@192.168.3.252:::::2 + 10016:public@192.168.3.252:::::2 + 10017:public@192.168.3.252:::::2 + 10018:public@192.168.3.252:::::2 + 10019:public@192.168.3.252:::::2 + 10020:public@192.168.3.252:::::2 + 10021:public@192.168.3.252:::::2 + 10022:public@192.168.3.252:::::2 + 10023:public@192.168.3.252:::::2 + 10024:public@192.168.3.252:::::2 + 10025:public@192.168.3.252:::::2 + 10026:public@192.168.3.252:::::2 + 10027:public@192.168.3.252:::::2 + 10028:public@192.168.3.252:::::2 + 10029:public@192.168.3.252:::::2 + 10030:public@192.168.3.252:::::2 + 10031:public@192.168.3.252:::::2 + 10032:public@192.168.3.252:::::2 + 10033:public@192.168.3.252:::::2 + 10034:public@192.168.3.252:::::2 + 10035:public@192.168.3.252:::::2 + 10036:public@192.168.3.252:::::2 + 10037:public@192.168.3.252:::::2 + 10038:public@192.168.3.252:::::2 + 10039:public@192.168.3.252:::::2 + 10040:public@192.168.3.252:::::2 + 10041:public@192.168.3.252:::::2 + 10042:public@192.168.3.252:::::2 + 10043:public@192.168.3.252:::::2 + 10101:public@192.168.3.252:::::2 + 10102:public@192.168.3.252:::::2 + 10103:public@192.168.3.252:::::2
Please also check if your device support 64-bit counter by :
mrtg# snmpwalk -v2c -c public 192.168.3.252 ifhcinoctets
IF-MIB::ifHCInOctets.1 = Counter64: 5271839511
IF-MIB::ifHCInOctets.5001 = Counter64: 19285262324965
IF-MIB::ifHCInOctets.10001 = Counter64: 12919676483968
IF-MIB::ifHCInOctets.10002 = Counter64: 3459432192332
IF-MIB::ifHCInOctets.10003 = Counter64: 1281890169832
IF-MIB::ifHCInOctets.10004 = Counter64: 1153220135
IF-MIB::ifHCInOctets.10005 = Counter64: 0
IF-MIB::ifHCInOctets.10006 = Counter64: 33399470170
IF-MIB::ifHCInOctets.10007 = Counter64: 0
IF-MIB::ifHCInOctets.10008 = Counter64: 66275657
IF-MIB::ifHCInOctets.10009 = Counter64: 675982530
IF-MIB::ifHCInOctets.10010 = Counter64: 272311362596
IF-MIB::ifHCInOctets.10011 = Counter64: 67263986026
IF-MIB::ifHCInOctets.10012 = Counter64: 91564885477
IF-MIB::ifHCInOctets.10013 = Counter64: 11703694
IF-MIB::ifHCInOctets.10014 = Counter64: 1111940271
IF-MIB::ifHCInOctets.10015 = Counter64: 808087796834
IF-MIB::ifHCInOctets.10016 = Counter64: 329951153
IF-MIB::ifHCInOctets.10017 = Counter64: 40798389204
IF-MIB::ifHCInOctets.10018 = Counter64: 101988149113
IF-MIB::ifHCInOctets.10019 = Counter64: 0
IF-MIB::ifHCInOctets.10020 = Counter64: 92328
IF-MIB::ifHCInOctets.10021 = Counter64: 116124022657
IF-MIB::ifHCInOctets.10022 = Counter64: 343211068
IF-MIB::ifHCInOctets.10023 = Counter64: 0
IF-MIB::ifHCInOctets.10024 = Counter64: 1916449367511
IF-MIB::ifHCInOctets.10025 = Counter64: 1992573277663
IF-MIB::ifHCInOctets.10026 = Counter64: 1608418929938
IF-MIB::ifHCInOctets.10027 = Counter64: 93278180105
IF-MIB::ifHCInOctets.10028 = Counter64: 2049131083512
IF-MIB::ifHCInOctets.10029 = Counter64: 2774637437
IF-MIB::ifHCInOctets.10030 = Counter64: 642167892888
IF-MIB::ifHCInOctets.10031 = Counter64: 0
IF-MIB::ifHCInOctets.10032 = Counter64: 1323638333873
IF-MIB::ifHCInOctets.10033 = Counter64: 25097636
IF-MIB::ifHCInOctets.10034 = Counter64: 42650627860
IF-MIB::ifHCInOctets.10035 = Counter64: 3902264390
IF-MIB::ifHCInOctets.10036 = Counter64: 0
IF-MIB::ifHCInOctets.10037 = Counter64: 11049288783
IF-MIB::ifHCInOctets.10038 = Counter64: 16960147512
IF-MIB::ifHCInOctets.10039 = Counter64: 982641846723
IF-MIB::ifHCInOctets.10040 = Counter64: 37731767
IF-MIB::ifHCInOctets.10041 = Counter64: 746897661580
IF-MIB::ifHCInOctets.10042 = Counter64: 22523459900
IF-MIB::ifHCInOctets.10043 = Counter64: 93528554047
IF-MIB::ifHCInOctets.10044 = Counter64: 1103749277819
IF-MIB::ifHCInOctets.10045 = Counter64: 780476638416
IF-MIB::ifHCInOctets.10046 = Counter64: 1573739997799
IF-MIB::ifHCInOctets.10047 = Counter64: 1802180546511
Note : Don’t forgot to reload your “cron” service in order to keep running periodically with the new bit counter.
a. rahman isnaini r.sutan
Thanks to / powered by Jason Wanardi