Interesante :
Today I want to show a command that was introduced with IOS 15.1T. Using this command will upgrade your troubleshooting capabilities as you can (finally) look back and have some decent historical data on the interface level.
interface GigabitEthernet0/0
bandwidth 102400
no ip redirects
no ip proxy-arp
ip nbar protocol-discovery
ip flow ingress
ip flow egress
load-interval 30
duplex full
speed 100
media-type rj45
history BPS
show interfaces gigabitEthernet 0/0 history 60min
321221111111123121111111113322111111111111111 12211 1 11
029108589964770873132113272220786387567684232900103999890714
091532545162610017712315560204796554282390965266200155805593
585675138102454196013319556260086029655740871822957903666416
409940507381326662397751740307868086203291321846448524900923
32900 **
30200 * * **
27500 * ** * **
24800 # *# * **
22100 #* * ## * ##* *
19400 ##*##* *** ## # ###* * * * **
16700 ######**##* *##*# *###**#* ## ***# **
14000 #################* * * *#######*#######*** #* * *
11300 #####################**###################### *##*# * **
8600 #########################################################*##
5900 ############################################################
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
GigabitEthernet0/0 input rate(kbits/sec) (last 60 minutes)
* = maximum # = average