Hello all,
i use a C2611XM in our Backbone. Version: IOS (tm) C2600 Software (C2600-IS-M), Version 12.2(13b).
At the Fa0/1(and only there) we use "ip route-cache flow". In Combination with "ip flow-export" we get an unrealistic sum of bytes passing this Interface at our accounting system. Please see the difference between the stats for "show interface fa0/1" and "show ip cache flow" (Totals Line; Total Flows * Flows/Packet * Bytes/Packet).
Any Help?
2611XM#sh int fa0/1
FastEthernet0/1 is up, line protocol is up
Hardware is AmdFE, address is 000c.3085.8d41 (bia 000c.3085.8d41)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 3/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:08, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1519000 bits/sec, 147 packets/sec
5 minute output rate 44000 bits/sec, 97 packets/sec
57254718 packets input, 1178626299 bytes
Received 97654 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
43662515 packets output, 3143989358 bytes, 0 underruns
0 output errors, 0 collisions, 4 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
2611XM#sh ip cache flow
....
last clearing of statistics never
Protocol Total Flows Packets Bytes Packets Active(Sec) Idle(Sec)
-------- Flows /Sec /Flow /Pkt /Sec /Flow /Flow
Total: 302092 0.3 189 1129 60.6 13.0 7.3
