залил для пробы c3750-advipservicesk9-mz.122-35.SE2.bin, взятый с сайта циски
.. и задумался, а куда очереди на интерфейсах делись ? только fifo осталось
что ЭТО ??
3750#sh run inter gigabitEthernet 1/0/24
Building configuration...

Current configuration : 216 bytes
!
interface GigabitEthernet1/0/24
description test
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,400-402
switchport mode trunk
end

3750#conf
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line.  End with CNTL/Z.
3750(config)#inter giga
3750(config)#inter gigabitEthernet 1/0/24
3750(config-if)#f?
flowcontrol

3750(config-if)#f

GigabitEthernet1/0/24 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is 0016.9d94.ec18 (bia 0016.9d94.ec18)
  Description: test
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 107/255, rxload 9/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, 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 3759000 bits/sec, 3907 packets/sec
  5 minute output rate 41995000 bits/sec, 5324 packets/sec