Cisco Switching/Routing :: 3750Gs / MRTG Bandwidth Utilization Not Same As Sh Interface
Dec 19, 2011
The other day 3rd party supplier ran some stats on our Gigabit link between 2 Cisco catalyst 3750Gs.now the graphs produced showed only a Maximum output of about 100Mbps ( 5 minute intervals) yet when I do a show interface it shows a lot more always 150Mbps and more. So I did my own Perl script doing an "sh interface" every minute and then graphed it, and the results were a lot different to the MRTG results.Questions: I know MRTG uses SNMP to get the traffic is there a bug in the SNMP, what OID does it use?does the "sh interface" give the correct results?
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Nov 7, 2011
I'm monitoring an WAE 7300 content-engine on our network. I constantly see that the graph hit over 90% on CPU utilization. But when I logged into the box and performed a "show processes CPU", it's showing a pretty low CPU usage. I'm using the HOST-RESOURCES-MIB file OID 1.3.6.1.2.1.25.3.3.1.2 to check CPU load. For other things such as memory usage, status of intefaces, etc... using that MIB file shows correct information. The one I got from SNMP or the one I saw when I logged into the box?
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Jan 23, 2013
We currently have a stack of 3750G switches that are running 12.2(46)SE C3750-ADVIPSERVICESK9-M
Our 3750X is currently running 15.0(2)SE C3750E-UNIVERSALK9-M and I believe we were told you can't stack with a Universal IOS image. We have the universal on there because we have some 10GB fiber connections on it that Cisco told us wouldn't work otherwise.
I realize that the switch versions need to match, but the question is, which version should we work off to have use of the 10GB SFP card?
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Jan 24, 2013
I want to use MRTG to monitor my DSL connection bandwidth useage.
Should I monitor:
ATM 0/3/0 or
Dialer 1 or
Virtual-Access 2
ps. is the 'BW' aspect of show interfaces important? I have 56Kbit/sec on Dialer 1, 100,000 Kbit/sec on Dialer 1 and 1024Kbit/sec on ATM.
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Jan 4, 2013
I am replacing our 2 3750s which are in a stack and are running in VTP server mode for the domain with 2 new 3750Gs. There are 4 trunks to other switches which bare in client mode and 2 trunks to 2 ASAs which are in active/standby mode (one in each switch). Anyway what will happen to the VTP clients when I replace the stack as the revision number will be 1 on the server? The clients will ignore any VTP updates from the server ?
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May 19, 2013
i noticed the "output drops" increasing in interface gi 1/0/1 in my switch 2960-S although the utilization of my interface is between 20% and 50 %
SW__A#sh interfaces gigabitEthernet 1/0/1
GigabitEthernet1/0/1 is up, line protocol is up (connected)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 93/255, rxload 3/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
[code]....
what is the cause of this issue ?
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Feb 7, 2012
Is there a way I can find out the amount of bandwidth i'm using on a particular interface on a 4507 cisco multi-layer switch? It is a gig port and I have it setup for monitoring (spanning) and I see packets being dropped in the "Total Output Drops" area. To me it looks like it must be exceeding the 1gig limit but I don't know a way to check to make sure. I also have the queueing strategy set to FIFO.
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Jan 11, 2012
CBWFQ kicks in when the interface becomes congested and there is no available space in the queue but I need to find a solution to the scenario below:Im using a Gigabit interface on the 3945 Router that connects to the ISP. The ISP limits bandwidth to 60Mb so I need to make sure when I reach the limit of the 60Mb the router starts using the BW percentages defined in the policy-map using classes. any kind of traffic go out as it wants but as soon as the 60Mb limit is reached, the priorities defined by the traffic classes will kick in just as if the interface ran out of queues (as CBWFQ usually works).
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Sep 18, 2011
I am working as net admin which is i need to monitoring and manage my workplace network( education center )I got a few question about network traffic flow. Here is the issued.I got high bandwidth utilization so high after office hours which is only on night. as we know, after office hours there is no person at the office but the traffic flow on bandwidth utilization is high.what are the possibilities of this issued?
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Feb 15, 2011
How to find bandwidth utlization and who consumed bandwidth lot.? Basically ,I would use speedtest.net for speedtest and will ask from ISP for bandwidth utilization.
Is there any way that to measure bandwidth utilization and who consumed lot based on IPaddress?
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Feb 12, 2013
I am running LMS 4.2 , using that i am monitering some switches . I am using topology services also. In that i am getting veiw of all connected devices with links. But bandwidth utilization is for those links are not showning in topology veiw .
Is there any settings to be done in LMS 4.2.2 or any configuration changes to done on my switches ? to find the traffic flow bandwidth utilization.
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Sep 8, 2011
We have a Cisco ASA 5520 supporting multiple VPNs - both remote-access and Lan-to-Lan. We would like to monitor the bandwidth utilization of the IPSec Lan-to-Lan tunnels.
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Jan 13, 2013
The infrastructure has PIX515E as the Firewall and few Web Servers and Database Servers inside. Is it possible to retreieve information regarding the bandwidth available at the outside interface of PIX (Internet link utilization ) utilized by each of the nodes seperately? I could use SNMP to get the overall data transfer at the Outside interface of PIX but isit possible to get utilization details of individual nodes ? Is Netflow an option ?
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Dec 22, 2008
I matched the traffic statistics on one of my Cisco ASA site-site tunnels with the OID:1.3.6.1.4.1.9.9.171.1.4.3.1.1.25.4142 (cipSecTunHistInOctets). I was real proud of myself for a few days until I checked the history and found the OID wasnt working.After some troubleshooting I found that the last four digits (4142 in this case) change whenever the tunnel drops and re-establishes itself. Any way to collect tunnel utilization history on an ASA with SNMP? Is there a different OID I can use thats based on the endpoint IP?
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Mar 20, 2013
I have been assigned to find out the nature of the network's bandwidth utilazation. Is there a way to analyze traffic and breakdown the traffic on the ASA5510?
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Sep 20, 2012
I am seeing a strange situation on my 6500 switch?By having snmp walk on '1.3.6.1.4.1.9.9.109.1.1.1.1.3' (== cpmCPUTotal5sec), I came to know that there are two processor and the cpu util for switching processor is gone to 88 % and some time creeps to 99 %.
snmpwalk -v2c -c "removes" sw6500 '1.3.6.1.4.1.9.9.109.1.1.1.1.3'
SNMPv2-SMI::enterprises.9.9.109.1.1.1.1.3.1 = Gauge32: 12 (--- this is for CPU of Router Processor )
SNMPv2-SMI::enterprises.9.9.109.1.1.1.1.3.3 = Gauge32: 99 (--- this is for CPU of Switching Processor )
but when I do sh process cpu on the console, all looks normal as it shows cpu utilization of RP. why the value is so high on the switching processor ?
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Jan 27, 2013
I have a Cisco Aironet 1240AG Access Point and I am trying to setup a guest network that is secure and limited in bandwidth utilization. I see an option under security > SSID Manager on the web interface to select an interface of Radio0-802.11G, Radio1-802.11A or both. Can I put the guest network on the Radio1-802.11A and make it more secure/bandwidth limited or does this option not matter?
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Dec 15, 2011
I am facing high CPU utilzation for cisco4507R,
sup:
WS-X4516-V
ios version:
cat4500-entservices-mz.122-54.SG.bin
!
show process cpu
CPU utilization for five seconds: 97%/1%; one minute: 97%; five minutes: 97%
[code]....
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Apr 16, 2013
I'd like to know what is "masks" in the output of show platform tcam utilization. What does 784 mean? What effect has the number of mask in the amount of supported unicast direct routes?
I'm having trouble comparing the capacity of theese two switches, regarding unicast directly-connected routes. I know the second switch has cpu utilization issues and ip unicast failed routes over 4096 arp entries. What would be the case for the first one?
Switch 1:
CAM Utilization for ASIC# 0 Max Used
Masks/Values Masks/values
Unicast mac addresses: 784/6272 12/26
IPv4 IGMP groups + multicast routes: 144/1152 6/26
[Code]...
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Mar 28, 2013
We have a Cisco 3845 router configured as a voice gateway with multi SIP trunks. But when it reachs 200 calls traffic, the CPU increase to 60-70% and caused by CCSIP_SPI_CONTROL process.
CPU utilization for five seconds: 46%/30%; one minute: 54%; five minutes: 58%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
377 400729448 171017979 2343 6.31% 10.71% 12.44% 0 CCSIP_SPI_CONTRO
[Code].....
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Feb 20, 2013
i have two cisco 3750 in stack firts, master switch have all swports busy second have only 5 how can i see cpu utilizations of the second switch, and its reasonable to move somme devices from first switch to second for deacreases of cpu and memory utilisatio ns of the master? the stack tehnologies use both cpu as one? or its only for simple management ?
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Apr 4, 2012
We plan to implement a large number of ACL on our Distribution switch which is a HSRP pair of 6509C switches running on sup-bootflash:s72033-psv-mz.122-18.SXD3.bin WE need to divide the Network in three layers
unsecure layer
Proxy layer
Secure layer
We have approximately 250 vlans on the our distribution switches and plan to implement 15 ACL on different vlans Each ACL can contain upto 30 lines or less.
basic ACL example we will be applying on different vlan
vlan 200
ip access-group test123 in
My question is Can these ACL on a vlan can have a massive impact on the 6509 CPU ?
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Jan 31, 2012
We are facing high CPU Utilization on Cisco 3750X-48P-L without any traffic on it. find the attached log files for 2 separate 3750's stack, we have upgraded the IOS of SW2 from "c3750e-universalk9-mz.122-55.SE3.bin" to "c3750e-universalk9-mz.122-55.SE4.bin" but still we found the same issue with CPU utilization.
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Mar 30, 2011
we are using solarwinds as monitoring toll for all network devices..the solarwinds shows proper memory & cpu utilization for catalyst 3750 switches but shows hogh cpu/memory utilization values for 6509-vss...when we log into vss via cli the util & memory values are normal but same are very high on solarwinds..i have checked the solarwinds site also and fond that there was issue for 6509 related to high cpu in relase before 9.2 and 9.2 release of solarwind has resolved this issue..is anything to be checked on 6509 or as such any known bug in this regard for 6509-vss i am using software s72033-ADVIPSERVICESK9_WAN-VZ.122-33.SXI4A on my vss.
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Apr 24, 2013
I've been looking at reported problems with our Vdeio Conferencing kit attched to a stack of 3750's (which I think is down to QoS) but this got me looking at the logs. We get a lot of high CPU utilization warnings mainly for SNMP (315), Hulc running con (95), Virtual exec (289). I understand the last two are normal, and the SNMP one is probably Cisco Works polling as it happens every 4 hours.
However I've got an odd one: Apr 25 07:34:58: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 93%/0%, Top 3 processes(Pid/Util): 296/85%, 144/0%, 154/0%
What is Pid 296? It's not listed on the switch:
293 39056 18456 2116 0.00% 0.00% 0.00% 0 SpanTree Helper
294 8 73 109 0.00% 0.00% 0.00% 0 EEM Server
295 0 2 0 0.00% 0.00% 0.00% 0 EEM Policy Direc
[Code].....
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May 20, 2012
From couple of weeks we have observed the cpu utilization of cisco 6509 with SUP 720 is high. During daytime from 9:00 to 21:00 it keeps increasing & reaches 98% & after 21:00 becomes normal.
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Feb 12, 2012
First of all I purchased the switches with part no. WS-C3750X-48P with the following IOS c3750e-universalk9-mz.150-1.SE1 & IOS feature license to work as ipservice.
Symptoms:
1) - When running the switches in stack mode (connecting the booth switch with full-duplex stack) I found the cpu utilization on each switch reached to 34% The Hulc LED Process reaches to 20%
3) - After about 1 hour with no connections to the switch I found the status not changed.
4) - I tried to run each switch in stand-alone mode (without stack cables connected) & monitor the status of the cpu utilization. I found it the same problem exist. Actions taken:
1) - Refereeing to the internet I found a bug ID describing the status of the mentioned symptoms (attached)
2) - I made a down grade for the IOS version to be c3750e-universalk9-mz.122-58.SE2.bin
3) - The mentioned IOS solved the Hulc LED Process (became 1 : 3 % ) & however cpu utilization became 18% with no links or traffic connected to the switches.
4) - I guess that 18 % utilization is too much for a free switch (refer to the show run file) as I did not configure any advanced commands.
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Mar 19, 2013
Cpu always hitting 70% to 80 % and interrrupt traffic is 70%. Want to know the root cause for this issue.
CPU utilization for five seconds: 73%/65%; one minute: 71%; five minutes: 67%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
1 8 59 135 0.00% 0.00% 0.00% 0 Chunk Manager
2 58864 3290773 17 0.00% 0.00% 0.00% 0 Load Meter
3 1784 238001 7 0.07% 0.01% 0.00% 2 Virtual Exec
[code]....
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Jan 13, 2013
I have a 2 cisco core (cisco WS-C6509-E (R7000) processor) and been working for quite sometime.they are conneted with HSRP with active standby config with a 10 g module for redundancy just today I see that the cpu utilization went to about 50% and its the same on both cores.
[Code] .......
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May 3, 2012
I have some events where the CPU utilization in a cluster switches of WS-3750 is going to 100%, the process with the major utilization of CPU is the "hulc running con".
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Feb 8, 2011
We have seen high CPU utilization on some Cisco switches of type 2960S. Also we got info, that applications are running with poor performance or with interruption.Following IOS is loaded: C2960s-universalk9-mz.122.55.SE
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May 1, 2012
I have a Cisco ASA 5505 and I have my internal and external interfaces configured but I currently cannot ping from the inside to an IP Address on the outside. I had this setup and working and I have another set of equirement that I am replacing that is working with my service provider so I know it is a configuration issue. When I ping 4.2.2.2 for example I get:
Destination host unreachable
Do I need to add a static route from my inside interface to my outside interfaces?
: Saved
:
ASA Version 8.2(5)
!
hostname pxasa
[Code].....
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Jul 18, 2011
LMS is not reporting on all of my interfaces, utilization in particular. As an example, I have 1 location that is connected via DMVPN tunnels, when I run a utilization report, it only comes back with information for 1 interface, a random interface, port FA 1/7 on the switch module. If it was all of the switchports it might make more sense.
In DFM device detail the interfaces are being managed.
In the Link Utilization Poller, only 1 interface is listed (FA 1/7).
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