Over Throughout on C4221 Router

[នឹម សំរឹទ្ធ]

My question, I have a Cisco router C4221. From Cisco document, C4221 have aggregation throughput for un-subscription is 35Mbps. But after I do monitor on Zabbix, I found that the overall | aggregation throughput reach over to 55Mbps. Moreover, the connection is operation normally.

Why it is over?

[dijix1990]

ISR4000 has special snmp oid for monitoring throughput 1.3.6.1.4.1.9.9.715.1.1.8.1 (https://mibs.observium.org/mib/CISCO-ENTITY-QFP-MIB/)

[Joseph W. Doherty]

My understanding is the throughput limitation is applied only to aggregate ingress, and your posted ingress didn't exceed 35 Mbps although your stats only show tunnel ingress.

However, your one all out interfaces stat shows 55.6 Mbps.  That's curious, but without considering bugs, in either the router or Zabbix, other possibilities that come mind is an active performance or boost license, Zabbix capturing interface rates at time intervals less than the license bandwidth shaper uses, or somehow double counting tunnel and same physical interface traffic.  I suspect the latter.

[dijix1990]

for understanding throughput limitation we can use (to observe via zabbix)  CISCO-ENTITY-QFP-MIB

1.3.6.1.4.1.9.9.715.1.1.8.1
CISCO-SMI::ciscoMgmt.715.1.1.8.1.1.9001 = Counter64: 500000000000 - current throughput per licence (default / perf / boost)
CISCO-SMI::ciscoMgmt.715.1.1.8.1.2.9001 = INTEGER: 1 - Depends on exeeding licence (variable 3 means that licence performance is exceeded)
CISCO-SMI::ciscoMgmt.715.1.1.8.1.3.9001 = INTEGER: 30 - poll interval 
CISCO-SMI::ciscoMgmt.715.1.1.8.1.4.9001 = INTEGER: 95 - threshold 
CISCO-SMI::ciscoMgmt.715.1.1.8.1.5.9001 = Counter64: 1126965 - current avg rate

before using this mib I offer to change value on the router (default poll interval is 300 seconds)

enable
set platform hardware throughput-monitor threshold 95 interval 30
wr mem