Bandwidth failure

[Paul Webster]

Greetings to all, yesterday I was doing a test on 2 cisco 2950 and 3750 switches and I got some worrying results ... when I transfer data from one PC to another the maximum bandwidth achieved is 11 mbps, it is important indicate that the switches have nothing configured and only these two machines are connected to the switch .. both with the same behavior .. however I place another desktop switch of another brand and lower performance and the bandwidth becomes up to 120 mbps .

My question is whether IOS versions may be creating this bottleneck on packages sent and received. this may be affecting performance and data traffic on the network

Here the Show Version for both Switches

================================================================================================

Cisco Internetwork Operating System Software
IOS (tm) C3750 Software (C3750-I9-M), Version 12.1(14)EA1a, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 02-Sep-03 05:15 by antonino
Image text-base: 0x00003000, data-base: 0x0079DB54

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(11r)AX, RELEASE SOFTWARE (fc1)

HWB-SW-002 uptime is 22 weeks, 7 hours, 0 minutes
System returned to ROM by power-on
System restarted at 10:48:06 UTC Wed Apr 3 2019
System image file is "flash:c3750-i9-mz.121.14-EA1a/c3750-i9-mz.121.14-EA1a.bin"

cisco WS-C3750-48TS (PowerPC405) processor (revision B0) with 118774K/12288K bytes of memory.
Processor board ID CAT0803X1EG
Last reset from power-on
1 Virtual Ethernet/IEEE 802.3 interface(s)
48 FastEthernet/IEEE 802.3 interface(s)
4 Gigabit Ethernet/IEEE 802.3 interface(s)
--More--  The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:0F:23:C2:C2:80
Motherboard assembly number : 73-7056-09
Power supply part number : 341-0028-01
Motherboard serial number : CAT080212EM
Power supply serial number : LIT0704002A
Model revision number : B0
Motherboard revision number : A0
Model number : WS-C3750-48TS-S
System serial number : CAT0803X1EG
SFP Module assembly part number : 73-7757-02
SFP Module revision Number : A0
SFP Module serial number : CAT08020E8U

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C3750-48TS 12.1(14)EA1a C3750-I9-M

Configuration register is 0xF

================================================================================================

Cisco IOS Software, C2960 Software (C2960-LANLITEK9-M), Version 12.2(55)SE7, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2013 by Cisco Systems, Inc.
Compiled Mon 28-Jan-13 10:22 by prod_rel_team
Image text-base: 0x00003000, data-base: 0x01400000

ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(53r)SEY3, RELEASE SOFTWARE (fc1)

HWB-SW-001 uptime is 24 minutes
System returned to ROM by power-on
System restarted at 17:26:17 UTC Wed Sep 4 2019
System image file is "flash:/c2960-lanlitek9-mz.122-55.SE7/c2960-lanlitek9-mz.122-55.SE7.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
--More--  compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco WS-C2960-48TC-S (PowerPC405) processor (revision N0) with 65536K bytes of memory.
Processor board ID FCQ1725Y3V2
Last reset from power-on
10 Virtual Ethernet interfaces
48 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

64K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : F8:4F:57:C0:93:00
Motherboard assembly number : 73-12596-06
Power supply part number : 341-0097-03
--More--  Motherboard serial number : FCQ172506M7
Power supply serial number : ALD1722B0ZK
Model revision number : N0
Motherboard revision number : A0
Model number : WS-C2960-48TC-S
System serial number : FCQ1725Y3V2
Top Assembly Part Number : 800-32804-02
Top Assembly Revision Number : C0
Version ID : V06
CLEI Code Number : COMSG00ARC
Hardware Board Revision Number : 0x0B

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 50 WS-C2960-48TC-S 12.2(55)SE7 C2960-LANLITEK9-M

Configuration register is 0xF

================================================================================================

[mattjones03]

Hi Paul,

Just to clarify, are both PC's connected to the same switch, or do you have an uplink between the C2950 and C3750?

If the PC's are connected to the same switch, do you observe the same behaviour?

[Paul Webster]

I did the tests on both switches separately to rule out the fault, it turned out that both behave the same. even if I make the connection between both switches the transmission performance is very poor

[mattjones03]

Please could you provide a show interface for the interfaces which the PC's are connected to?

[Paul Webster]

I performed the tests with the initial configuration of the switches .. and additionally with some modifications to the ports and the results were those mentioned above

HWB-SW-001#show run inter fa 0/1
Building configuration...

Current configuration : 249 bytes
!
interface FastEthernet0/1
description INTERNET
switchport mode trunk
switchport nonegotiate
speed 100
duplex full
storm-control broadcast level 20.00
storm-control action trap
spanning-tree bpdufilter enable
spanning-tree guard root
end

HWB-SW-001#

[mattjones03]

Thanks for the information, however please could you provide the "show interface" output for the two interfaces connecting to the PC's.

My assumption at this stage is that you are experiencing a duplex issue, which could be causing the poor performance you have observed. To validate this assumption, I would need to see the output of "show interface" for both interfaces.

[Paul Webster]

Here it is

HWB-SW-001#

HWB-SW-001#show interfaces | inc ^[A-Z]|duplex|drops

Vlan1 is up, line protocol is up

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

Vlan100 is up, line protocol is up

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

Vlan200 is up, line protocol is up

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

Vlan300 is up, line protocol is up

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

Vlan400 is up, line protocol is up

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

Vlan500 is up, line protocol is up

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

Vlan600 is up, line protocol is up

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

Vlan700 is up, line protocol is up

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

Vlan800 is up, line protocol is up

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

Vlan900 is up, line protocol is up

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

FastEthernet0/1 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 9768

  FastEthernet0/2 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 151

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

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 480

FastEthernet0/4 is up, line protocol is up (connected)

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

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

FastEthernet0/5 is down, line protocol is down (notconnect)

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

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

FastEthernet0/6 is down, line protocol is down (notconnect)

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

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

FastEthernet0/7 is down, line protocol is down (notconnect)

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

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

FastEthernet0/8 is down, line protocol is down (notconnect)

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

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

FastEthernet0/9 is up, line protocol is up (connected)

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

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

FastEthernet0/10 is down, line protocol is down (notconnect)

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

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

FastEthernet0/11 is up, line protocol is up (connected)

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

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

FastEthernet0/12 is up, line protocol is up (connected)

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

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

FastEthernet0/13 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/14 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/15 is up, line protocol is up (connected)

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

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

FastEthernet0/16 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/17 is up, line protocol is up (connected)

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

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

FastEthernet0/18 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 400

FastEthernet0/19 is up, line protocol is up (connected)

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

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

FastEthernet0/20 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/21 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 732

FastEthernet0/22 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/23 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/24 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 58

  FastEthernet0/25 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/26 is up, line protocol is up (connected)

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

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

FastEthernet0/27 is up, line protocol is up (connected)

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

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

FastEthernet0/28 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/29 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/30 is down, line protocol is down (notconnect)

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

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

FastEthernet0/31 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 48

FastEthernet0/32 is up, line protocol is up (connected)

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

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

FastEthernet0/33 is up, line protocol is up (connected)

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

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

FastEthernet0/34 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/35 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/36 is up, line protocol is up (connected)

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

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

FastEthernet0/37 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/38 is up, line protocol is up (connected)

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

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

FastEthernet0/39 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/40 is down, line protocol is down (notconnect)

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

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

FastEthernet0/41 is down, line protocol is down (notconnect)

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

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

FastEthernet0/42 is down, line protocol is down (notconnect)

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

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

FastEthernet0/43 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 495

FastEthernet0/44 is up, line protocol is up (connected)

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

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

FastEthernet0/45 is up, line protocol is up (connected)

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

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

FastEthernet0/46 is down, line protocol is down (notconnect)

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

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

FastEthernet0/47 is down, line protocol is down (notconnect)

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

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

  FastEthernet0/48 is down, line protocol is down (notconnect)

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

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

GigabitEthernet0/1 is up, line protocol is up (connected)

  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX

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

GigabitEthernet0/2 is up, line protocol is up (connected)

  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX

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

[Paul Webster]

HWB-SW-001#

HWB-SW-001#show interfaces | inc ^[A-Z]|duplex|drops

Vlan1 is up, line protocol is up

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

Vlan100 is up, line protocol is up

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

Vlan200 is up, line protocol is up

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

Vlan300 is up, line protocol is up

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

Vlan400 is up, line protocol is up

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

Vlan500 is up, line protocol is up

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

Vlan600 is up, line protocol is up

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

Vlan700 is up, line protocol is up

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

Vlan800 is up, line protocol is up

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

Vlan900 is up, line protocol is up

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

FastEthernet0/1 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 9768

  FastEthernet0/2 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 151

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

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 480

FastEthernet0/4 is up, line protocol is up (connected)

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

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

FastEthernet0/5 is down, line protocol is down (notconnect)

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

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

FastEthernet0/6 is down, line protocol is down (notconnect)

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

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

FastEthernet0/7 is down, line protocol is down (notconnect)

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

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

FastEthernet0/8 is down, line protocol is down (notconnect)

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

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

FastEthernet0/9 is up, line protocol is up (connected)

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

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

FastEthernet0/10 is down, line protocol is down (notconnect)

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

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

FastEthernet0/11 is up, line protocol is up (connected)

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

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

FastEthernet0/12 is up, line protocol is up (connected)

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

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

FastEthernet0/13 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/14 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/15 is up, line protocol is up (connected)

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

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

FastEthernet0/16 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/17 is up, line protocol is up (connected)

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

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

FastEthernet0/18 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 400

FastEthernet0/19 is up, line protocol is up (connected)

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

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

FastEthernet0/20 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/21 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 732

FastEthernet0/22 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/23 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/24 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 58

  FastEthernet0/25 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/26 is up, line protocol is up (connected)

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

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

FastEthernet0/27 is up, line protocol is up (connected)

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

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

FastEthernet0/28 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/29 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/30 is down, line protocol is down (notconnect)

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

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

FastEthernet0/31 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 48

FastEthernet0/32 is up, line protocol is up (connected)

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

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

FastEthernet0/33 is up, line protocol is up (connected)

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

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

FastEthernet0/34 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/35 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/36 is up, line protocol is up (connected)

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

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

FastEthernet0/37 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/38 is up, line protocol is up (connected)

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

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

FastEthernet0/39 is down, line protocol is down (notconnect)

  Auto-duplex, Auto-speed, media type is 10/100BaseTX

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

FastEthernet0/40 is down, line protocol is down (notconnect)

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

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

FastEthernet0/41 is down, line protocol is down (notconnect)

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

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

FastEthernet0/42 is down, line protocol is down (notconnect)

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

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

FastEthernet0/43 is up, line protocol is up (connected)

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

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 495

FastEthernet0/44 is up, line protocol is up (connected)

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

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

FastEthernet0/45 is up, line protocol is up (connected)

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

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

FastEthernet0/46 is down, line protocol is down (notconnect)

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

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

FastEthernet0/47 is down, line protocol is down (notconnect)

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

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

  FastEthernet0/48 is down, line protocol is down (notconnect)

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

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

GigabitEthernet0/1 is up, line protocol is up (connected)

  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX

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

GigabitEthernet0/2 is up, line protocol is up (connected)

  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX

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

HWB-SW-001#

HWB-SW-001#

[mattjones03]

Thanks for the information.

I can see that some of the interfaces are experiencing output drops. Can you confirm the following;

1. Which interfaces do PC’s A and B connect to on the C3750?

2. Do both PC’s reside in the same VLAN?

3. What are the associated IP addresses and subnet of both PC’s?

I would suggest that you remove the speed and duplex statement from the interfaces connecting to the PC’s and allow this to be auto negotiated. If you want to statically assign this, ensure you do so on both sides (switch and PC).

If the PC’s are in different VLAN’s, please can you highlight the diagram you provided, with this information, and which device holds the L3 interfaces for the associated VLAN’s.

[Paul Webster]

My Answres

1. Which interfaces do PC’s A and B connect to on the C3750?

Im using varius ports on the switch. 

2. Do both PC’s reside in the same VLAN?

Yes

3. What are the associated IP addresses and subnet of both PC’s?

192.168.0.x / 24

I would suggest that you remove the speed and duplex statement from the interfaces connecting to the PC’s and allow this to be auto negotiated. If you want to statically assign this, ensure you do so on both sides (switch and PC).

The ports are forced tu full duplex like the PC

If the PC’s are in different VLAN’s, please can you highlight the diagram you provided, with this information, and which device holds the L3 interfaces for the associated VLAN’s.