[c-nsp] Making sure a GigE interface isnt working as FastE

[Kim Onnel]

Hi,

I have three cisco ethernet switches connected in series:

Switch3 ---- Switch1 --- Switch2

The links between 1-2 and 1-3 are GigE links, but it seems they never go
above 100Mb, as seen from our MRTG graphs.

 Max  In: 99.2 Mb/s (9.9%)
 Average  In: 90.8 Mb/s (9.1%)
 Current  In: 90.9 Mb/s (9.1%)  Max  Out: 70.5 Mb/s (7.1%)
 Average  Out: 61.8 Mb/s (6.2%)
 Current  Out: 65.7 Mb/s (6.6%)
And the same numbers on the links facing Switch2 and 3.

How do i make sure that they should work as GigE, traffic generators, i'm
running an old IOS, is there any tricks ?

Interface on Switch2 facing Switch1
_____________________________

GigabitEthernet0/2 is up, line protocol is up
  Hardware is Gigabit Ethernet, address is 0004.c1ef.24da (bia
0004.c1ef.24da)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 23/255, rxload 16/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex (Full), link type is autonegotiation, media type is SX
  output flow-control is off, input flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:01, output 00:00:44, output hang never
  Last clearing of "show interface" counters 00:01:55
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 65125000 bits/sec, 11089 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     1278161 packets input, 939486067 bytes, 0 no buffer
     Received 389 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 238 multicast, 0 pause input
     4 packets output, 1313609173 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


Interface on Switch1 facing Switch2 :
______________________________


Switch1#sh int GigabitEthernet0/7
GigabitEthernet0/7 is up, line protocol is up
  Hardware is Gigabit Ethernet, address is 0002.1653.0787 (bia
0002.1653.0787)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 16/255, rxload 23/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex (Full), link type is autonegotiation, media type is SX
  output flow-control is off, input flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:44, output 00:00:01, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  30 second input rate 94022000 bits/sec, 22644 packets/sec
  30 second output rate 66186000 bits/sec, 11355 packets/sec
     3753414873 packets input, 1531220577 bytes, 0 no buffer
     Received 8603 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 7202 multicast, 0 pause input
     3868171485 packets output, 3619754206 bytes, 0 underruns
     0 output errors, 0 collisions, 1 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

Switch1#sh run int GigabitEthernet0/7
Building configuration...

Current configuration:
!
interface GigabitEthernet0/7
 load-interval 30
end

The Switch1 show ver: (very old)
___________________

Cisco Internetwork Operating System Software
IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)XU, RELEASE
SOFTWARE (fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Mon 03-Apr-00 17:31 by swati
Image text-base: 0x00003000, data-base: 0x00301398

ROM: Bootstrap program is C3500XL boot loader

Core1 uptime is 4 days, 21 minutes
System returned to ROM by power-on
System image file is "flash:c3500XL-c3h2s-mz-120.5-XU.bin"

cisco WS-C3508G-XL (PowerPC403) processor (revision 0x01) with 8192K/1024K
bytes of memory.
Last reset from power-on

Processor is running Enterprise Edition Software
8 Gigabit Ethernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.
Model number: WS-C3508G-XL-EN
Configuration register is 0xF




I'll paste those of Switch3 if needed.