Cisco WAN :: SRR Input Scheduler On 3560?

May 28, 2013

By default there 2 input queues. 2nd is priority queue and has 10% of link assigned. Weights for two queues are 4 and 4. For example we have 1Mbps link. ANd we also have saturated link with voice and other traffic. Will voice get 550k bandwidth? As I undestood 100k is assigned to voice strictly. Remaining 900k is evenly divided by two queues according to 4 and for ratio.

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Cisco :: 3560 Not Showing CRC And Input Errors In Logging

Oct 21, 2012

I ran into a problem a few weeks ago and am still trying to figure out why either the 3560 switch or our Cacti syslog server did not alert us when one of our ports was experiencing heavy CRC and Input errors. 
I had upgraded the IOS to 12.2(55)SE6 and rebooted the switch.  About a week later, someone was troubleshooting why print jobs were having problems printing to a high speed printer.  When I looked at the interface it showed a few thousand CRC and Input errors.  I cleared the counters and had them print again and watched as the CRC and Input errors went up.  When I did a "show log" there were no error messages.  Looking at our Cacti Syslog there were also no errors present for the past 6 months.
We found that the device on the port was set to auto speed and duplex and the switch port was at 100/Full.  Once we got them to match the problem was resolved, but we were left wondering why we never got any alerts.
We also have some 3548 and 3550 model switches that Cacti picks up %LINK-4-ERROR for any ports that show CRC and Input errors.  I did some research and it appears that the 3560 switches do not have the LINK facility code.  I believe it has been replaced with a PHY link code but I'm not sure.  We do have some "%PHY-4-EXCESSIVE_ERRORS: Excessive FCS, data, or idle word errors found" but they are all for 3750 switches.  I could not find any 3560 that had alerted for that error or the LINK error.
I also tripped port security on the 3560 switch just to make sure that it was reporting correctly to Cacti and that alert did show up. 
My question is how do I get a 3560 switch to alert in the logging buffer for CRC/Input/FCS errors?  Also, how I can generate CRC and Input errors on purpose for testing?  I tried mismatching the speed/duplex/Auto and only got collissions, no CRC or Input errors.

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Cisco Switching/Routing :: 3560 And 3750 - Any Way To Check For MLS QoS Input Queue Drops?

Feb 10, 2012

I feel that 3560 and 3750 perform differently with the following two commands:
srr-queue bandwidth shape 5 0 0 0
srr-queue bandwidth limit 50
 On 3750, the bandwidth for queue 1 is limited to 100mbps x 50% / 5 = 10mbps
On 3560, the bandwidth for queue 1 is limited to the smaller value of BW / shape weight and BW x limit%.
Does it sound about right?  is there a way to check for mls qos input queue drops? The show mls qos interface xxx stat only shows the output queue drops. Maybe for some reason the input queue never drops?

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Cisco Switching/Routing :: 2921 / Catalyst 3560 - Router Interface Input Queue Drops?

Nov 6, 2011

i have an 2921 connected to an Catalyst 3560. My router interface shows quite a lot of input queue drops. Load is not too much max 5/255.

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Cisco :: Scheduler Max-task-time 5000 Command

Dec 10, 2011

I was wondering what this command that appears in default configuration of cisco routers: scheduler max-task-time 5000.I did some research in forums but did not find anything apart from the "scheduler" command with other options.

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Cisco WAN :: High CPU Load With IP Input On 881?

Sep 23, 2012

Here is my conf:
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec


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Cisco WAN :: 2811 - 99% CPU High IP Input?

Dec 8, 2011

Our 2811 Edge router is having extremely high CPU problems. IP Input is consuming 70% of the process during business hours. Cisco express forwarding is enabled. It only shows 50% but its currently before business hours. Id say even 50% is still high. 
CPU utilization for five seconds: 55%/16%; one minute: 70%; five minutes: 76%
PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
104     5310320     2813117       1887 36.92% 46.73% 51.43%   0 IP Input        
The below interface is our public interface and is constantly over utilized with 100% Is there any configurations that can be done to correct this? Is there any more information that is needed?
IOS: (C2800NM-ADVSECURITYK9-M), Version 12.4(24)T4
 Show IP Interface
FastEthernet0/0 is up, line protocol is up
  Internet address is x.x.x.x
  Broadcast address is x.x.x.x
  Address determined by non-volatile memory


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Cisco Wireless :: Power Input For AP 1262?

Oct 20, 2011

Do I need to plug in AP 1262 into a PoE switch or external power adapter before can power on? How about LAP 1262? Do I need PoE switch as well?

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Cisco WAN :: Input Errors On 1841 LAN Interface

Nov 4, 2011

I use an 1841 router as an internet facing firewall with a 10MB MetroE connection.  Lately users started reporting slow internet download speeds and web pages timing out.  Bandwidth reports do not show the link as being saturated so I looked at the interfaces on the 1841.   The interface connected to the provider shows OK as far as errors but the LAN side of the router shows steadily increasing input errors.  It doesn't show any other errors, no CRC, frame, runts, giants or overruns, just generic input errors.  What type of errors are those?  Nothing is being logged on the console.
I moved the connection to another switch ports and the errors continue.  I switched it down to 10MB and also changed the switch and the errors slow down but don't stop.  Interestingly, the switch side never shows any errors.  What can I do here?  I guess it can be a bad interface but that is such a rare thing that I am hesitant to replace the router.

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Cisco WAN :: 6500 - Input / Output Drops

Feb 7, 2011

I have this topology in part of my networ:k
All devices are interconected via optical 1Gb/s links. There is no QoS implemented on any device and all VLANs are allowed on all interfaces.
Also all links are trunks (with many VLANs)
In LAN1 there was a layer 2 broadcast-storm and 4000packets/s was comming to rest of the network (in one particular VLAN).
 1) 7200 with G1 should be able to handle traffic up to 500Mb/s, but a lot of users experienced drops on traffic via 7200.
(CPU load was around 10%).
2) Why do I have input drops on 7200 on link toward 6500 if CPU was normal. Broadcast comming to this interfaces were cca 4kpps. But since it's destination is not on router these packets should be rejected on interface controller. Is that right? (7200 doesn't even has dot1q subinterface in that VLAN but since 6500 allow all VLANs on its trunk these packets reach 7200)
3) Why do I have output drops on Cisco 6500 (it is here as layer 2 device only)? It is max 160Mb/s in output direction. It has WS6724 card with DFC (there is no oversubscription).. Shouln't 6500 send traffic as fast as interface allows (up to 1Gb/s). Am I righ't?
4) After all how coul'd 6500 now if 7200 can't handle these traffic?Output drops should be only seen if QoS is enabled (i.e. shaping), or if there is oversubscription on the linecard?

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Input Parameter Gets Into Tagged Website

Feb 2, 2011

why my input parameter are gone in the TAGGED website ?

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Cannot Input Security Key To Wireless Signals

Mar 25, 2012

Running vista. When I pull up my list of possible wireless signals to try and connect.

I normally get asked to input a security key. NOW the screen will simply close after i press the enter key. Right clicking and trying to connect also am having the same issue. MY wireless signal for MY comcast account it connects perfectly.

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Can't Switch To DVI On HP W1907 - No Input Signal?

Aug 3, 2011

I bought a DVI D to hdmi connector so i can watch movies from my computer on my hdtv but whenever i try to switch to DVI on my HP w1907 my monitor says no input signal.

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Using Ethernet Input Instead Of DSL For A Wireless Router?

Oct 22, 2011

In university I have one ethernet socket in my room which I have connected to an ethernet port on my wireless router. I have also connected all my other ethernet devices to the router so I don't have to keep unplugging them and replacing the ethernet cable in the wall socket. I can connect to the internet through the router but it's only allowing one device to be connected at once and the router is saying "no connection" even though I can connect through it. does this mean it's working as a switch at the moment, right? Would it be possible to make it work as a router so all my devices can work simultaneously and get the wifi to work?

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Altering Input Cable To LAN Port Of A Router (Cisco)

Feb 5, 2013

I have connected the input cable of router to LAN port instead of INTERNET port and i got internet (some time only). due to that I caught by the authority and they are saying that change of port was the problem. Already there was a problem to our server (might be hardware problem).

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Cisco Firewall :: PIX 515 - Installation / Invalid Input Detected

Mar 16, 2011

I've just got my hands on a Cisco PIX 515. I mainly brought it too learn and play with, i done some Cisco stuff in the past but not much.

I just need too get this up and running with a IP Address on ethernet1 ( but when I run the command "name if ethernet1 inside security100" in enable mode all I keep getting is ERROR % Invalid input detected at '' maker

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Cisco WAN :: 7200 Series Input / Output Controllers?

Mar 22, 2012

We have 7206 VXR running NPE-G1, we are looking for the GigE cards for 7200 which supports upto line rate and came across Cisco 7200 Series Input/Output Controllers The datasheet for the same doesnt say anything about line rates.

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Cisco WAN :: Output Drops And Input Errors On 7204 With NPE 300

May 11, 2011

My router, a Cisco 7204 with NPE 300, is experiencing output drops and input errors on a fastethernet interface. I have a 100Mbps connection with less than 15Mbps utilization at peak times.
FastEthernet1/0 is up, line protocol is up  Hardware is DEC21140, address is 0014.a985.1a1c (bia 0014.a985.1a1c)  Internet address is  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,     reliability 255/255, txload 3/255, rxload 1/255 


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Cisco Switching/Routing :: 3750-E - High CPU Due To ARP Input

Feb 4, 2013

my 3750-E Core Stack is connected to the Provider Router and is the DG for the internal LAN. I saw that the CPU is very high also in the night, but I found not the problem. I use an SVI to connect the provider due to HA reasons. I sniffered the network but saw no ecessive broadcaststorms. There was a PBR configured but I deleted it wihtout any success..
switch Version
10#sh proc cpu so


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Cisco Firewall :: 5545 OSPF Input Packets Ignored

Sep 26, 2012

I am trying to configure my ASA 5545 firewall in area 0 but when I do so, the neighbor relationship never establishes.  A debug on OSPF gives only one response: [code] Why the ASA is ignoring the input packets?

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Cisco WAN :: 1811 Router - Invalid Input Detected

Feb 1, 2011

I have  a cisco 1811 router with 12.4(6) IOS, I would like to ask can I use this as a layer 2 switch?
When I issue vlan ID command it gives me " Invalid input detected", I need use this device as switch to create different vlan on and the connect the f0 port to a ASA

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Cisco WAN :: 3750G Pause Input And Flow Control

Sep 26, 2007

I am having issue on my 3750G gig interface, it is not passing data more than 200M.Some how its giving me lots of input Pause on both sides,can some one explain if there is congesstion issue,do I need to enable flow control on both sides? [code]

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Cisco Firewall :: Getting ASA 5505 Invalid Input Error

Apr 15, 2012

Whenever I use the following command I get an invalid input error
ciscoasa#conf t
ciscoasa (config) # crypto isakmp enable outside
ciscoasa (config) #object network net-local
ciscoasa (config-network) # subnet
I have reset the firewall (cisco 5505) to factory default. The marker ^ is under the subnet

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Cisco :: PIX 501 Firewall Does Not Accept Keyboard Input Over Serial

Jan 14, 2013

I am trying to connect to a PIX 501 firewall via serial connection. My problem is that I cannot issue commands to the firewall. Whenever I try to type something into the terminal, nothing happens. I have the connection settings configured properly (9600 baud, 8 data bits, 1 stop bit, no parity, no flow control) and have tried PuTTY and HyperTerminal and have the same results. I get output from the firewall, but my keystrokes do not seem to be going to it.

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Cisco WAN :: 1941 - Output Drops Even Low Input Rate

Mar 18, 2012

I found increasing of total output drops and output queue drops even input rate was low and no qos apply on this interface. I plan to increase hold queue out for output queue.
Router 1941, 15.0(1)M4
Serial0/0/0 is up, line protocol is up
Hardware is WIC MBRD Serial


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Cisco :: Audit All Input / Output Of Switch 1900

Jan 10, 2012

Sometimes our network lag and i thing there is a computer making this problem. i'd like to audit all input output of all port of a Catalyst 1900. all i manage to do is to enter to the console menu via Telnet.. once here, i try monitoring but i'm afraid to do a bad thing :

     Catalyst 1900 - Main Menu
     [C] Console Settings
     [S] System
     [N] Network Management
     [P] Port Configuration


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Cisco Switching/Routing :: Input Errors On Many Interface WS-C3750G-12S

Apr 16, 2013

We are facing since one month in our two Cisco WS-C3750G-12S on many interfaces input errors when data transer or ping (ICMP) increase input erros. Not only port 1 but many interface has same issue, i have change new IOS but still same issue, once i have erase startup config but same issue we are facing and finaly i have replace same new switch with the same IOS it's working fine.(c3750-ipservicesk9-mz.122-55.SE4.bin) [code]

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Cisco Switching/Routing :: RP / Input Drops On 6500 Sup 720 10GE

Jun 17, 2012

What does RP drops entail? We are experiencing 0.23 % drops on an vlan int on one of our 6500. This interface is an L3 to a server-subnet. Doing a sh int vlan 238 switching shows 30935411 RP (Route Processing) drops.It was a bit unclear to me in the thread "Input queue drops on 6500 vlan interface" if RP drops was through the router, or to the router(mgmnt)?I can do a netdr to see what traffic goes to it. It should not generate CPU load, but I think I will wait until after hours before I try that command.

- do NETDR:
-- debug netdr cap rx vlan 238
-- show netdr cap

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Cisco Firewall :: How To Clear Input Errors In ASA5540 Interface

Feb 26, 2013

My Expertise with Cisco ASA is Very less. I have observed Input errors in a Couple of Interfaces in Cisco ASA 5540 Firewall.   [code] I need to Clear the Input errors on this particular Interface.Will Clear interface GigabitEthernet 0/0 will work?

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Cisco Switching/Routing :: Cat 6509E 6Kw PS AC Input Level Verification

Oct 27, 2011

I have a 6509E switch with dual 6Kw power supply that is logging "Power supply 1 input has changed.  Power capacity adjusted to 2671.20W" then will bounce back to normal at random times from 1sec to 10sec. Is there a command to check what each input level of the power supply to try to identify possibly which source is causing the problem? The power supply input lights remains green while this is occuring.

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Cisco Switching/Routing :: Input Discard On Nexus 4001?

Nov 17, 2011

I have 2 NX4001. Each one has an uplink to a 5K. There is no VPC between the 4K and the 5K. The 5K are  VPC enabled.There is a large number on input discards on the 4001 interfaces connected to the 5K and is incrementing.I have a server with smartfailover that is flapping and I think the input discard might be the culprit.what is the cause on input discard. Note: All NXOS  to the latest.

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Cisco Switching/Routing :: CRC And Input Errors On WS-C2960-24TT-L?

Jul 1, 2012

I am not sure why the CRC and input errors are increasing in fastethernet port...This port is used as Intradomain cross connect to Data Center service provider for LAN extension between two Data Centers in different locations... The link is 100 MB. The switch port is directly connected to patch panel of DC provider and I believe they have some L3 switch or some other device that is providing LAN extension...
#sh interfaces fastEthernet 0/23
FastEthernet0/23 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0019.3050.1497 (bia 0019.3050.1497)
  Description: ASA_VPN_TO
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,


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Cisco WAN :: 2911 Forward Packet Based On Input Interface

Mar 25, 2013

I have a 2911 router connected to two different ISP. Is it posible to route traffic based on what interface the traffic came first?Lets say I have the deault route to use interface gig0/0(ISP1),  but a certain ip packet reach the router by interface gig0/1(ISP2). Is there any way (if possible without using source NAT) that I could route traffic back to that ip address using interface gig0/1. The source Ip addresses are not fixed, so I can not use Policy Based Routing.

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