Cisco Switching/Routing :: 4500 Sup7E Show Controllers Ethernet Output

Mar 12, 2012

I recently configured a network with a 4500 Sup7E and a 3560G with jumbo frame support.  I am trying to confirm operation.  On the 4500 this is straight forward using "sho int g0/nn count detail".  [code] The 3560 doesn't support that command.  The closest I can come to finding the number of jumbo packets is "show controllers ethernet" (example below).  On the transmit side I assume that jumbo frames would be tallied in the "Too large frames" counter.  The receive side is a little more ambiguous.  There are 2 counters that seem to be duplicates, "Valid frames, too large" and "Valid oversize frames".  In operation they are not. I am seeing the "Valid frames, too large" counter incrementing while the "Valid oversize frames" remains at zero. [code]

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Mar 5, 2013

I have a really weired thing happening on 6509 device with one of my customers.The device has a SUP 2 (MSFC2) with version 12.2.18SXF17B.
 
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Oct 26, 2011

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No transceiver present
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Gi1/2        To WLC5508         connected    trunk        full   1000 1000BaseSX
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[code]....

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Feb 15, 2012

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Mar 7, 2013

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Apr 3, 2012

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Oct 8, 2012

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QoS is disabled
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Feb 21, 2012

I have a 3560X that is directly connected to an ASA 5505.  I am seeing output drops on the 3560X interface that connects to the ASA.  Below are the troubleshooting commands I have ran, but I don't see any indication to what is causing the problem.
 
3560X
show run int gig 0/24
!
interface GigabitEthernet0/24

[Code]....

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Nov 23, 2012

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Cisco Switching/Routing :: C3560 Output Drop Without MLS QoS Enabled

Nov 24, 2012

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GigabitEthernet0/1
QoS is disabled. When QoS is enabled, following settings will be applied
trust state: not trusted

[Code]......

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Apr 16, 2012

I've been  working on breaking down and understanding the default auto qos  configuration on a Cisco 3750 in the hopes of putting together a QoS  strategy that will fit our environment.  I'm having some difficulty  understanding how the "mls qos queue-set output" syntax works.
 
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thresshold 2: 400%
thresshold 3: 100% (implicit, not configurable)
reserved: 100%
max: 400%
 
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mls qos queue-set output 1 threshold 2 400 400 100 400
 
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Cisco Switching/Routing :: Output Drops In 7200 Gig Interface

Mar 13, 2012

I have too much output drops in my cisco 7206 VxR NPE G1 router. I'm doing dot1Q on this interface and is connected to  switch , i changed the router and IOS but still the error is same . What can be the reason . The interface on switch and router are 1000/Full and i changed the cable also . The traffic only comes about  max70Mbps and it is really confusing. [code]

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Nov 29, 2011

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Cisco Switching/Routing :: Output Drops On CAT3750x With Multiple Ports

Jan 25, 2013

I've got a recurring them developing across several deployments of Catalyst 3750X series switches, I'm seeing large amount of output drops across multiple ports but there are is no QoS deployed on any of these switches. (standard FiFO). As it happens the ports in question are a member of EtherChannel groups which are connected to ESX Hosts.I've also seen this behaviour also unexplained on another 3750X at a different site, however it's a single port and connects to an Upstream firewall.However in both cases neither switch has any QoS or non-standard configuration, literally a couple of VLAN's and some EtherChannel groups.Here's some output from the case involving the ESX servers.

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Nov 17, 2012

I have seen an error in GRE configured between two routers over WAN.  i am monitoring the WAN link and GRe tunnel via WhatsupGold NMS and it reported that Gre tunnel having packet loss sometimes and this time it affects the services and traffic passing over tunnel.sh int t101 shows output drops . is that the problem ? i have read that i have to adjust MTC size but i tried to change the tunnel MTU to 1400 but still sh int t101 shows MTU as 1514 ? What could be the problem of output drops in my tunnel link. [code]

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Jun 7, 2012

I have a video feed coming into my 3570.  It comes in at  5 minute input rate 18777000 bits/sec, 1695 packets/sec.  However, the uplink to the router is much different, 5 minute output rate 130000 bits/sec, 28 packets/sec.  I am in a lab and about ready to go into testing phase for a  project when we discovered this problem, as this video feed is not veiwable on the other end.

Below is the config and capture from the switch.

BLOSSw1#sh int g1/0/6GigabitEthernet1/0/6 is up, line protocol is up (connected)  Hardware is Gigabit Ethernet, address is a44c.112f.3506 (bia a44c.112f.3506)  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,     reliability 255/255, txload 1/255, rxload 4/255  Encapsulation ARPA, loopback not set  Keepalive not set  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP  input flow-control is off, output flow-control is unsupported  ARP type: ARPA, ARP Timeout 04:00:00  Last input never, output 00:00:00, output hang never  Last clearing of "show interface" counters 15:16:25  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

[code]....

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Cisco Switching/Routing :: Catalyst 2960 - Total Output Drops?

Apr 25, 2012

I have a Catalyst Switch that is been used as a SAN switch providing ISCSI connection for servers.The total output drops of the interfaces connected to the SAN and some connected to the servers keep increasing.
 
Example below:
 
SWESAN1-1#sh interfaces gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up (connected) Hardware is Gigabit Ethernet, address is ec44.763c.8f01 (bia ec44.763c.8f01)MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 5/255Encapsulation ARPA, loopback not setKeepalive set (10 sec)Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTXinput flow-control is off, output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00Last input never, output 00:00:08, output hang neverLast clearing of "show interface" counters 03:25:04Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 78Queueing strategy: fifoOutput queue: 0/40 (size/max)5 minute input rate 22322000 bits/sec, 2171 packets/sec5 minute output rate 5155000 bits/sec, 1487 packets/sec20441503 packets input, 23941254166 bytes, 0 no bufferReceived 0 broadcasts (0 multicasts)0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored0 watchdog, 0 multicast, 0 pause input0 input packets with dribble condition detected16323602 packets output, 9608971046 bytes, 0 underruns0 output errors, 0 collisions, 0 interface resets0 babbles, 0 late collision, 0 deferred0 lost carrier, 0 no carrier, 0 PAUSE output0 output buffer failures, 0 output buffers swapped out 

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Nov 27, 2011

In my cisco 3845 router I can see output packet drop in some of the interfaces.I suspect that router is processing packet beyond its mix throughput limit. Moreover when i run show int fax/y switching command I can see packet drop by RP process.

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Cisco Switching/Routing :: Total Output Drops WS-C3750E-48TD-E

Feb 21, 2013

I have a problem with Total Output Drops, it's increase and decreases on WS-C3750E-48TD-E.
 
SWCIACTCT05#sh int gi1/0/47 | i  Total output drops:
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6487344
SWCIACTCT05#sh int gi1/0/47 | i  Total output drops:
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6487344
SWCIACTCT05#sh int gi1/0/47 | i  Total output drops:
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6487344

[code]....
 
I checked and found two registered bug id: CSCtq86186 / CSCso81660.I would like to know what is the best IOS version to update my switch, IOS 15.0.2 SE2 or 12.2.58 SE2, by the way, my environment is very critical (data center) and the version 15.0.2 SE2 is very recent, but its stable ?In both versions the problem are fixed?

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Cisco Switching/Routing :: SUP-7E - Input /output Rate Not Incrementing Under VLan

Mar 6, 2013

On my SUP-7E, when I issue a " show interface vlan X "  I cannot see the expected input/rate reflecting the real rate (which should be very high).
 
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 4000 bits/sec, 2 packets/sec

(Under the physical interfaces it is ok)However on other SUP-IV I can see the real rate.
 
My questions are :
 
- Why the SUP-7E does not reflect the rate, whereas the SUP-IV does ?

- I have heard about the 'counter' command under the vlan interface to activate the rate counters. Is this command application has any side effect on the switch ?

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