03-18-2013 12:54 PM - edited 03-07-2019 12:19 PM
Hello all. I'm having an issue with a port channel. This port channel is set up for a NAS device and the server group is complainging that it's taking too long for their backup to run. I verified in Orion that the ports in the etherchannel are only receiving 1.4 mbps of data. Other port channels are as much as 500+ mbps.
We are looking for differences in the port channels but are having issues coming across them. I thought I would give everyone here a shot at it. Here is the configs and other results below.
FR0001#show etherchannel 353 det
Group state = L2
Ports: 2 Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol: LACP
Minimum Links: 0
Ports in the group:
-------------------
Port: Gi1/1/3
------------
Port state = Up Mstr In-Bndl
Channel group = 353 Mode = Passive Gcchange = -
Port-channel = Po353 GC = - Pseudo port-channel = Po353
Port index = 0 Load = 0xFF Protocol = LACP
Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.
A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi1/1/3 SP bndl 32768 0x161 0x161 0x1104 0x3C
Partner's information:
Partner Partner LACP Partner Partner Partner Partner Partner
Port Flags State Port Priority Admin Key Oper Key Port Number Port State
Gi1/1/3 SA bndl 255 0x0 0x11 0x1 0x3D
Age of the port in the current state: 667d:20h:09m:45s
Port: Gi2/1/3
------------
Port state = Up Mstr In-Bndl
Channel group = 353 Mode = Passive Gcchange = -
Port-channel = Po353 GC = - Pseudo port-channel = Po353
Port index = 1 Load = 0xFF Protocol = LACP
Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.
A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi2/1/3 SP bndl 32768 0x161 0x161 0x2104 0x3C
Partner's information:
Partner Partner LACP Partner Partner Partner Partner Partner
Port Flags State Port Priority Admin Key Oper Key Port Number Port State
Gi2/1/3 SA bndl 255 0x0 0x11 0x2 0x3D
Age of the port in the current state: 667d:20h:10m:27s
Port-channels in the group:
----------------------
Port-channel: Po353 (Primary Aggregator)
------------
Age of the Port-channel = 24d:05h:26m:35s
Logical slot/port = 46/28 Number of ports = 2
HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = LACP
Fast-switchover = disabled
Load share deferral = disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------------+------------------+-----------
0 FF Gi1/1/3 Passive 8
1 FF Gi2/1/3 Passive 8
Time since last port bundled: 20d:03h:36m:36s Gi2/1/3
Time since last port Un-bundled: 20d:04h:58m:37s Gi2/4/17
Last applied Hash Distribution Algorithm: Fixed
FR0001#show run int po353
Building configuration...
Current configuration : 97 bytes
!
interface Port-channel353
description Tier 3 Storage
switchport
switchport mode access
end
FR0001#show run int gi1/1/3
Building configuration...
Current configuration : 134 bytes
!
interface GigabitEthernet1/1/3
description Tier 3 Storage
switchport
switchport mode access
channel-group 353 mode passive
end
FR0001#show run int gi2/1/3
Building configuration...
Current configuration : 134 bytes
!
interface GigabitEthernet2/1/3
description Tier 3 Storage
switchport
switchport mode access
channel-group 353 mode passive
end
From show etherhchannel summary detail
353 Po353(SU) LACP Gi1/1/3(P) Gi2/1/3(P)
I appreciate your help.
03-18-2013 01:43 PM
hello
how did you create the port channel?
i mean did you let the router/switch create it when the interfaces were configured?
try and delte the port channel
conf t
no int port 353
delete your physical interface
default int ran gig1/1/1 ,gig2/1/1
recreate the interfaces and assign
channel-group xxx mode active
channel protocol lacp
once this is done your port-channel will be created automatically
res
Paul
Sent from Cisco Technical Support Android App
03-19-2013 05:06 AM
I created the port channel manually which I had done several times in the past. This is the first instance where we have actually seen poor performance.
I'm going to try this and see how it works.
03-19-2013 05:16 AM
Hello Jason,
I have found in the past some etherchannel issues have a rose from manually creation of the port-channel,
Configuring the physical interfaces ( routed/switched/access) into an ehterchannel and then letting the router/switch create the port-channel seems to provide a much cleaner and less problematic aggregate link.
res
Paul
Please don't forget to rate any posts that have been helpful.
Thanks.
03-18-2013 02:15 PM
Can you please post the output to the commands "sh interface
If this is a 3750-series please add the following commands "sh controll util" and "sh controll e
03-19-2013 04:38 AM
FR0001#show int gi1/1/3
GigabitEthernet1/1/3 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0022.90fb.751a (bia 0022.90fb.751a)
Description: Tier 3 Storage
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 10/100/1000BaseT
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:17, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 28000 bits/sec, 38 packets/sec
284039399 packets input, 21227923238 bytes, 0 no buffer
Received 119823 broadcasts (119807 multicasts)
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
74298243 packets output, 7562800490 bytes, 0 underruns
0 output errors, 0 collisions, 3 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
FR0001#show int gi2/1/3
GigabitEthernet2/1/3 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0022.905c.9066 (bia 0022.905c.9066)
Description: Tier 3 Storage
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 10/100/1000BaseT
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:36, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 9
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 118000 bits/sec, 111 packets/sec
397607 packets input, 51395008 bytes, 0 no buffer
Received 72259 broadcasts (61506 multicasts)
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
2358686042 packets output, 3285777351338 bytes, 0 underruns
0 output errors, 0 collisions, 6 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
03-19-2013 04:39 PM
I don't see anything wrong with the above output.
Do an extended (and continous) ping from the host to host and see what the results are.
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