Cisco Switching/Routing :: 3845 CPU Utilization Reaches 100 % When NM-1T3/E3 Is Enabled
Jun 21, 2010
I have installed NM-1T3/E3 IN A CISCO 3845 WITH IOS c3845-advipservicesk9-mz.124-9.T3.bin AND 512 MB RAM .WHEN I ENABLE THE CARD THE CPU PROC HISTORY SHOWS 100% WHEN DISABLED IT COMES DOWN TO 10%
Slot 0: C3845 Mother board 1GE(TX,SFP),1GE(TX), integrated VPN and 4W Port adapter, 7 ports Port adapter is analyzed
Slot 2: NM-1T3/E3 (clear/subrate) Port adapter, 1 port Port adapter is analyzed
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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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Apr 26, 2011
I have 3845 router where 200 branches are connect. Ho have database server where branch are synch interval period.some of days observation cpu load average 70 % and sometimes it reaches 100 %.yesterday when I give command clear arp then instant cpu load reduce and 20 % yesterday cpu load 12-20 %. Today morning when I give command Cpu proc history then I found cpu load 60 % and at night it was 3 times reaches 100 %. so my question is after clear arp command at least 10 hours cpu utilization 20 % but after that it increase.so for any LAN broadcast it happend ? how i understand cpu high for Broadcasting or anything else.
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Oct 20, 2009
I have a 3845 enabled for CDP connected to a stack of 3750 switches. From the router, i dont see any CDP neighbors. From the switch, i can see the router as neighbor. Why isn't the switch showing as a neighbor from the router side? [code]
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Jul 18, 2012
Which is the best way of creating GRE Tunnels on a GLBP enabled router? I actually have two 3845 with GLBP configured as our gateway routers, and need to create gre tunnels to branches.The plan is to use the GLBP virtual IP as the Tunnel Source address and the branch WAN interface as the tunnel Destination address, how do i handle the Tunnel IP address? Do i create the same Tunnel on both gateway routers and have a glbp virtual IP address for the Tunnel Interface as well?
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Jun 1, 2011
Cisco 3845 router (256RAM / 64Flash), increases the cpu utilization upto 70~80 percent, during the time of high utilization, I am unable to run show command on router.The configuration is simple, this is connected with two internet links (24Mbps and 8Mbps) and its about 600~700 users are using internet.show version, show memory and show process cpu outputs are attached here.
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Apr 22, 2011
My client using 3845 as a core router . 200 number of branch are connected through 6 ISP.Some of days average process shows 90 % . Max time 50 %.In the morning when Branch location are off then time also high utilization.High utilization is not continue after intervals of time or periodic time its goes to high.
have any solution for that ?. before once 3845 is crash for that. another is ready for replacee.We test another device like core switches for observation CPU rate.
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Sep 10, 2012
I have a problem with SNMP. I using Cisco 3845 in distribution layer. >600 subinterfaces. When my managment system send response - the cpu Utilization on cisco3845 near 100%. I want to prohibited my Cisco answer on response about interface status.
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Jan 19, 2013
I have a power conncet 6224 with routing enabled with several VLANs setup.VLAN Database: 6,8,10,90-254VLAN 6 is our management vlan10 is for our core network services (DNS, Domain, Exchange etc)90-254 are isolated vlans.What I need to accomplish is to prevent vlans 90-254 from communicating with each other and only allow communication to VLAN 10 and the internet. All internet firewall work will be handled by our Sonicwall. [code]
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Feb 25, 2013
We have two catalyst 3560 switches running c3560-ipbasek9-mz.122-58.SE2.bin They are connected using etherchannel using gi 0/21 - 24 interfaces.
on 3560-1 switch, there isn't any ip-default gateway or ip route configured. It only have 1 interface vlan configured.
on 3560-2 switch, there is ip default gateway configured along with 1 interface vlan.
What i dont understand here is that, i can reach out to other subnets from 3560-1 switch in which the routing is not enabled?
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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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Dec 9, 2012
Should I install any special license to enable vrf within Nexus 7000 VDC? I observed that vrf routing instance is not enabled in the VDC.
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Oct 28, 2012
We have just received a new 3750X-12S-S to put onto our existing network but I am having a few issues getting this switch working correctly. For this post, the permenant license is not activating/applying, switch boot up gives the following errors:
*Mar 1 00:00:05.377: Read env variable - LICENSE_BOOT_LEVEL =
*Mar 1 00:00:05.972: %IOS_LICENSE_IMAGE_APPLICATION-3-FAILED: Image application receive image level as NULL.
[Code]....
From my understanding these switches come with the ipbase license as default, and the other switch I received (3750X-24P-S) has this license loaded with no issues.
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Mar 17, 2013
I have a customer who just bought a pair of N5K and wanted to replace his current HP E3800 as Core. He wants to use the 4 x stacked HP E3800 connect back to the N5K. Will I be able to utilize VPC through a bundled 2 or 4 x 10G (40G) connection (10 or 20G on 1 switch, and 10 or 20G on another switch) from the stacked HP E3800s to the N5548s? I know you can do that with Cisco 3750s.
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Jan 30, 2012
Document at url... is quite interesting,One of these goes about the behavior of a switch (2960-S and 3750G) when QoS is not enabled vs the one when QoS is simply enabled with "mls qos".What additional commands, beside "mls qos", would be needed so as to simulate as accurately as possible the switch's behavior when QoS is not enabled?
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Jun 3, 2012
I had problem with IP conflit address from cisco router 2911 , all the time the router respond with ARP reply (duplicate use of IP : x.y.z.t with the same Mac Address ) and the IP subject of conflit dosen't appear in any router's interfaces configuration (basic configuration without dhcp) ,the problem was solved problem when I desactivete proxy arp but I can't understand this behavior , why arp proxy respond to all IP address with same Mac even the IP dosen't exist in router ?
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Nov 24, 2012
We are seeing output drops on a C3560 switchport, this port does not have QoS enabled -- application does not need special qos treatment, as long as packets are not droppd, so I suppose all traffic will share the same queue? then how should I read the output of "show platform port-asic stats drop" which indicates that it is queue 3 weight 2 drop? I am wondering what is the best way to fix this? enable mls QoS and increase queue 3 bandwidth share on this interface or just increase the output queue depth?
switch#sh mls qos interface gi0/1
GigabitEthernet0/1
QoS is disabled. When QoS is enabled, following settings will be applied
trust state: not trusted
[Code]......
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Oct 3, 2012
I have enabled syslog on my Cisco 2960S swtich as shown below -
-logging facility local6
-logging host 10.11.12.122 transport tcp port 514
I have sent the port to TCP since that is what is configured on the SYSLOG server which is a CENTOS 5.8, running rsyslogd.I have tested the rsyslogd locally and it work.However i want to send any and all log messages in the buffer to my syslog server and it is not working.there is no firewall on the CENTOS and the ASA firewall filter is enabled for outgoing traffic.
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Apr 24, 2012
I have a 3845-Mb that has a username and password already on it. This needs to be wiped as its a sold unit. However i cannot break into teh IOS in Hyperterminal using Ctrl-Break either as it boots or after teh IOS image has loaded (after it shows Decompressed image {ok} etc). I have tried several break key combinations such as ctrl+F6+break and they dont work either. On boot the unit does show Password recovery Functionality is disabled. IOS image is 12.4(13r)T.
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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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Dec 21, 2011
Following procedures get to the switch: dir flash and get the following.....unable to stat flash//: no such device
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Jan 3, 2012
I would like to apply a policy-based route on one of our L3 switches (Cisco 3750) to change the next-hop of a couple of servers only. The VLAN where those servers reside got WCCP enabled on it. When I want to apply the route-policy to that VLAN interface it doesn't let me. When I try to apply the same policy to a VLAN interface without WCCP it does work. Is there any Cisco IOS limitations that would prevent me from doing that?
Configuration:
route policy config:
access-list 70 permit ip host x.x.x.x (server IP)
route-map PBR1 permit 10
[Code].....
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Jun 9, 2013
When I try to add an IP address to a port-channel interface on a 3845 ISR I am getting an error that seems to imply that only L2 etherchanneling is possible. Am I missing something?Cisco IOS Software, 3800 Software (C3845-ADVIPSERVICESK9-M), Version 12.4(24)T8,
sfo-c3845-1#sho run int port-channel 1
Building configuration...
Current configuration : 31 bytes
!
interface Port-channel1
end
[code].....
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Jun 25, 2012
Can the encryption module (DES/ 3DES/AES/SSL VPN Encrytion/compression) for Cisco Router 3845 able to support the external connection from other high end router, for example cisco 7200? What is the maximum bandwidth, load and concurrent connection it can support?
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Mar 7, 2013
I found cpu load around 90 - 100% on cisco 3845, so I show tech-spec and show log on router and found process "Virtual Exec" use high load. I'm not sure this situation make high latency time on my network.
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Oct 26, 2011
We have a number of 3845 routers, some running IOS 12.4(22)T2 and earlier and some running 12.4(24)T4. On the ones with 12.4(22)T2 and earlier, gigabit interface g0/1 shows interface down/line protocol down when there is no cable connected to the interface and the interface is not in shutdown state. On the ones with 12.4(24)T4, gigabit interface g0/1 shows interface up/line protocol down when there is no cable connected to the interface and the interface is not in shutdown state. Interestingly in both cases, the "show controller g0/1" command shows " network link is down (NO CARRIER)" when there is no cable attached. It makes sense to us that the interface status would be down/down when there is no cable attached. It does not makes sense to us that the interace would be up/down. Did Cisco at some point change their philosophy on whether an interface should show down/down or up/down when there is no cable attached, or is this a bug?
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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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