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Throughput on Catalyst 3550 FastEthernet port

cisco24x7
Level 6
Level 6

Is it possible to push 99.06Mbps on a Fast Ethernet interface on a Catalyst 3550? I thought the most traffics you can push through a Fast-Ethernet interface is around 95 or 96Mbps. Apparently, that is not the case:

C3550-lab#sh int f0/3

FastEthernet0/3 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 0012.0003.1283 (bia 0012.0003.1283)

Description: Provider-1 NGx e2

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 5/255, rxload 252/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, media type is 10/100BaseTX

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input never, output 00:00:01, output hang never

Last clearing of "show interface" counters 00:11:29

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

30 second input rate 99063000 bits/sec, 8205 packets/sec

30 second output rate 2157000 bits/sec, 4209 packets/sec

5638620 packets input, 4214107302 bytes, 0 no buffer

Received 0 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 0 multicast, 0 pause input

0 input packets with dribble condition detected

2893708 packets output, 185404435 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

0 output buffer failures, 0 output buffers swapped out

C3550-lab#

Comments anyone?

1 Reply 1

irisrios
Level 6
Level 6

I think you can push up to 96 Mbps on Fast Ethernet interface.

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