slow file transfers on port-channel link

[sikek]

Hi any ideas on what could be causing the slow speed issue ?
I check the output of the show interfaces port-channel 1 command. and i don't see anything wrong .


MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is unknown
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi1/0/1 Gi2/0/1
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters 20w6d
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 205000 bits/sec, 271 packets/sec
5 minute output rate 4975000 bits/sec, 535 packets/sec
1243848357 packets input, 373029262570 bytes, 0 no buffer
Received 3916566 broadcasts (2241220 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2241220 multicast, 0 pause input
0 input packets with dribble condition detected
1917474500 packets output, 1958101710260 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

 

[VinceWhirlwind]

What about a "show int" on each of the physical interfaces?

How about you disable one interface, does the issue disappear?

Show us the config for all 3 interfaces on each end of the link.

Show us a "show logg" opn each switch.

 

[vipergg]

By slow speed what are you talking about it ? Gave little to go on . Where is the port channel attached and what is its function ? What transfer rate are you getting ?

 

[sikek]

First off thanks for the replies . The issue has to deal with transfer of files so SMB shares/ftp/scp/sftp all run slow across this link it's connect to a cisco 3750. Here's the interface information from both devices.


2950



show interfaces gigabitEthernet 0/2
GigabitEthernet0/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 000c.3169.bbb2 (bia 000c.3169.bbb2)
Description: Trunk to IRV-3750-CORE
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseTX
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
1000BaseT module (WS-G5483) in GBIC slot.
Last input 00:00:03, output 00:00:13, 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 120000 bits/sec, 11 packets/sec
5 minute output rate 12000 bits/sec, 5 packets/sec
262369400 packets input, 2377898112 bytes, 0 no buffer
Received 43527613 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 33177469 multicast, 0 pause input
0 input packets with dribble condition detected
444512141 packets output, 44973487 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


show interfaces gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 000c.3169.bbb1 (bia 000c.3169.bbb1)
Description: Trunk to IRV-3750-CORE
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseTX
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
1000BaseT module (WS-G5483) in GBIC slot.
Last input 00:00:27, output 00:00:06, 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 4786000 bits/sec, 495 packets/sec
5 minute output rate 158000 bits/sec, 249 packets/sec
821747671 packets input, 4288823713 bytes, 0 no buffer
Received 16095601 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 6147278 multicast, 0 pause input
0 input packets with dribble condition detected
244087711 packets output, 2282737458 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

show interfaces port-channel 1
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 000c.3169.bbb1 (bia 000c.3169.bbb1)
MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi0/1 Gi0/2
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 1/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 4892000 bits/sec, 511 packets/sec
5 minute output rate 191000 bits/sec, 261 packets/sec
1084158357 packets input, 2418056680 bytes, 0 no buffer
Received 59626339 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 39325948 multicast, 0 pause input
0 input packets with dribble condition detected
688626687 packets output, 2330738098 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



3750-

show interfaces gigabitEthernet 2/0/1
GigabitEthernet2/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0014.a90d.8881 (bia 0014.a90d.8881)
Description:
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/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 00:00:18, output 00:00:05, output hang never
Last clearing of "show interface" counters 21w0d
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 2000 bits/sec, 1 packets/sec
5 minute output rate 164000 bits/sec, 12 packets/sec
668938371 packets input, 238823048295 bytes, 0 no buffer
Received 1502288 broadcasts (820225 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 820225 multicast, 0 pause input
0 input packets with dribble condition detected
899455333 packets output, 847953213181 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



show interfaces gigabitEthernet 1/0/1
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0015.6229.2201 (bia 0015.6229.2201)
Description:
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/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 00:00:10, output 00:00:59, output hang never
Last clearing of "show interface" counters 21w0d
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 175000 bits/sec, 244 packets/sec
5 minute output rate 4709000 bits/sec, 494 packets/sec
607360288 packets input, 138974548881 bytes, 0 no buffer
Received 2525888 broadcasts (1462347 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 1462347 multicast, 0 pause input
0 input packets with dribble condition detected
1078614700 packets output, 1181437115421 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

 

[VinceWhirlwind]

OK, how about the config and the loggs.

Also, define "slow".

Do your own test - when people complain a network's "slow", they usually mean "my server is crap and the apps I've installed on it are even worse".

 

[vipergg]

Between the devices people are complaining about run some extended pings , if response times are reasonable you are probably looking at server issues . Do this during so called slow response times. People will always blame the network when very few times it is . Also look at the links on these servers during slow response times and look at utilization rates etc... I assume the servers are attached at a gig also .

 

[Capc4]

I have the same issue with the same rates.

HPc7000-cisco3125-10g - 10g Nexus7K - 1g 3560 SM - 1g - SM 3750 PC 2g PC HPc7000.
Verified all interfaces are at correct speed. Tested near end server to server and far end server to server and I get 60MB-70MB. Far end to near end server 76Mbits. Running as if on a 100Mb network. Nexus is using L3 sub-interfaces I cant find anything about it possible dropping a connection to 100Mbits plus the sub-interface shows 1g.

 

[sikek]

thanks everyone i checked all the connecting devices interfaces for duplex and speed anything match can't found any errors when we do an iperf here's what we get im thinking it's a windowing issue .


MY COMPUTER <—————AVG 3 Mbit/s————— > 192.168.1.10 (Fileserver)
MY COMPUTER <—————AVG 3 Mbit/s————— > 10.10.30.3 (esx server running quickbooks)
MY COMPUTER <—————AVG 70 Mbit/s————— > 10.10.x.20


All prefixes are configured on the same core switch .

 

[VinceWhirlwind]

That's incredibly slow - what's the latency on those links, if you ping with a large packet size?

 

[ADB100]

Is QoS enabled? There are some issues with the default queue sizes that cause high-rate TCP flows to see drops.

 

[baddos]

What do your layer3 interface look like? Doing any qos or firewalling?