[c-nsp] Cisco WS-CBS3130G-S-F and OutDiscards
Jose Hadamik
jhadamik at gmail.com
Sat Feb 12 14:58:49 EST 2011
Hello, I was hoping someone would be able to shed some light on the
OutDiscards that I am getting. I have a Port-Channel with 2 members,
each are 1G interfaces. Traffic load is typically around 70-150Mbps on
the port-channel viewing 5 minute input and output; however, I have
seen traffic burst to 500Mbps using PRTG at 3 second intervals. The
type of traffic on the port-channel is primarily iSCSI; what is a
little interesting is that the OutDiscards erros are logged at the
same time, with the same size. Not all interfaces are in the same
vlan, the port-channel is always double the size of the OutDiscards of
the interfaces. Cisco's site does not offer any additional information
of what I already know;
http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008015bfd6.shtml
A1#show int counters err
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
OutDiscards
Gi1/0/1 0 0 0 0 0
2084
Gi1/0/2 0 0 0 0 0
2084
Gi1/0/3 0 0 0 0 0
2084
Gi1/0/4 0 0 0 0 0
2084
Gi1/0/5 0 0 0 0 0
2084
Gi1/0/6 0 0 0 0 0
2084
Gi1/0/7 0 0 0 0 0
2084
Gi1/0/8 0 0 0 0 0
2084
Gi1/0/9 0 0 0 0 0
2084
Gi1/0/10 0 0 0 0 0
2084
Gi1/0/11 0 0 0 0 0
2084
Gi1/0/12 0 0 0 0 0
2084
Gi1/0/13 0 0 0 0 0
2084
Gi1/0/14 0 0 0 0 0
2084
Gi1/0/15 0 0 0 0 0
2084
Gi1/0/16 0 0 0 0 0
2084
Gi1/0/17 0 0 0 0 0
2084
Gi1/0/18 0 0 0 0 0
2084
Gi1/0/19 0 0 0 0 0
2084
Gi1/0/20 0 0 0 0 0
2084
Gi1/0/21 0 0 0 0 0
0
Gi1/0/22 0 0 0 0 0
0
Gi1/0/23 0 0 0 0 0
0
Gi1/0/24 0 0 0 0 0
0
Po1 0 0 0 0 0
4168
Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen
Runts Giants
Gi1/0/1 0 0 0 0 0
0 0
Gi1/0/2 0 0 0 0 0
0 0
Gi1/0/3 0 0 0 0 0
0 0
Gi1/0/4 0 0 0 0 0
0 0
Gi1/0/5 0 0 0 0 0
0 0
Gi1/0/6 0 0 0 0 0
0 0
Gi1/0/7 0 0 0 0 0
0 0
Gi1/0/8 0 0 0 0 0
0 0
Gi1/0/9 0 0 0 0 0
0 0
Gi1/0/10 0 0 0 0 0
0 0
Gi1/0/11 0 0 0 0 0
0 0
Gi1/0/12 0 0 0 0 0
0 0
Gi1/0/13 0 0 0 0 0
0 0
Gi1/0/14 0 0 0 0 0
0 0
Gi1/0/15 0 0 0 0 0
0 0
Gi1/0/16 0 0 0 0 0
0 0
Gi1/0/17 0 0 0 0 0
0 0
Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen
Runts Giants
Gi1/0/18 0 0 0 0 0
0 0
Gi1/0/19 0 0 0 0 0
0 0
Gi1/0/20 0 0 0 0 0
0 0
Gi1/0/21 0 0 0 0 0
0 0
Gi1/0/22 0 0 0 0 0
0 0
Gi1/0/23 0 0 0 0 0
0 0
Gi1/0/24 0 0 0 0 0
0 0
Po1 0 0 0 0 0
0 0
A1#
A1#show int po1
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 0021.d724.1d12 (bia 0021.d724.1d12)
MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
reliability 255/255, txload 7/255, rxload 9/255
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: Gi1/0/17 Gi1/0/18
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:03:46, output hang never
Last clearing of "show interface" counters 00:48:49
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 4168
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 71160000 bits/sec, 12776 packets/sec
5 minute output rate 60486000 bits/sec, 7440 packets/sec
40736064 packets input, 33573471468 bytes, 0 no buffer
Received 18446744073527603055 broadcasts (45048 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 45048 multicast, 0 pause input
0 input packets with dribble condition detected
22105475 packets output, 21076221705 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
A1#show int gi1/0/1
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0021.d724.1d01 (bia 0021.d724.1d01)
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 1000BaseX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:48:54
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2084
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1686000 bits/sec, 204 packets/sec
5 minute output rate 2338000 bits/sec, 383 packets/sec
1023612 packets input, 898799170 bytes, 0 no buffer
Received 14 broadcasts (0 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
1997101 packets output, 1758204034 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
Any documents or references so that I can pick my brain at them for
additional assitance.
Thanks,
Jose
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