Cisco Switching/Routing :: 6509E-VSS High CPU Process Due To ARP Input
Feb 6, 2012
We are experiencing with high CPU input due to ARP input between 20:30 and 22:30 every day At this time we have a lot of backup operations. When I look the netflow report, I can't see anything anormal.
We are changing our backup server's NIC card from 1gig to 10Gig. The backup operation's traffic is high (approx 2Gbps level) but 6509 has to be handle this size of traffic.
We are using two 6509E in VSS mode and our image version is s72033-adventerprisek9_wan-mz.122-33.SXJ.bin
20:00
show ip arp summary
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2588 IP ARP entries, with 166 of them incomplete
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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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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
15.0(1)SE1
10#sh proc cpu so
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May 29, 2012
I have a process whick take all the CPU on two differents Stack of WS-C3750G in version 12.2.53(SE2):
XFRPALSN02R#sh proc cpu sorted CPU utilization for five seconds: 97%/3%; one minute: 95%; five minutes: 95% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 307 5450059 4167397 1307 86.74% 83.63% 83.35% 0 hulc nrgyz PD di XFRPALSN02R#sh proc cpu sorted CPU utilization for five seconds: 96%/3%; one minute: 96%; five minutes: 96% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 307 7779608 5947379 1308 86.26% 85.75% 85.30% 0 hulc nrgyz PD di
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Oct 9, 2011
i try newest ios 15.1(3)S0a and 12.2(33)SRE
in both case some times i obtain lowing traffic on interface and highest cpu - to 100%
after clear cef linicard i obtain growing traffic and cpu 0%
#sh proc cpu s
CPU utilization for five seconds: 87%/83%; one minute: 91%; five minutes: 96%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
7 1711512 87883 19474 4.06% 0.84% 0.89% 0 Check heaps
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Oct 1, 2011
We added Site02 for redundancy and DR. Also added new SAN and ESX hosts. The CPU on device Site01Server01 is not very happy when files are being transferred between the sites. Since the setup is the same at both sites, why is the problem only at site01?
Site02 is newer and we have two 3750X-24 with IOS 12.2(55)SE3 on ipservices, for site02server01; no problem.
Site01server01 is a stack of two 3750G-24PS with IOS 12.2(58)SE on ipservices.
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Jun 4, 2012
Our switch is very high cpu in process arp
Am debug ip arp track command the result as below
-- on this switch have interface vlan 201 ip subnet is 10.11.201.1/24
Jun 5 15:30:40.732 GMT+7: IP ARP: rcvd req src 10.11.201.217 0001.6c6b.8ab9, dst 172.27.116.73 Vlan201
Jun 5 15:30:42.150 GMT+7: IP ARP: rcvd rep src 10.11.201.217 0001.6c6b.8ab9, dst 172.27.116.4 Vlan201
Jun 5 15:30:42.150 GMT+7: IPARP_TRACK: ARP tableid(0) 10.11.201.217 Vlan201 mode(1) modified.
Jun 5 15:30:42.150 GMT+7: IP ARP: rcvd req src 10.11.201.217 0001.6c6b.8ab9, dst 172.27.116
and then am try to shutdown vlan database 201 after that the cpu process has to normal state.
How to check the root cacus?
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Nov 29, 2011
I have a router 3845 with c3845-advsecurityk9-mz.124-24.T6.bin software . Frequently we are facing problem in logging to the device .Inorder to resolve we need to reboot the router . Yesterday fortunately i have got the console access for some time so i came to know that TPLUS process is consuming 99.9% percentage cpu.
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Aug 30, 2010
I have a problem with cpu high.tell me if normal have this process?
CPU utilization for five seconds: 29%/0%; one minute: 29%; five minutes: 30%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
29 198216576 402619350 492 15.83% 15.87% 15.68% 0 Cat4k Mgmt HiPri
30 175197296 96703435 1811 10.23% 10.10% 10.64% 0 Cat4k Mgmt LoPri
Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.2(25)EWA14, RELEASE SOFTWARE (fc1)Technical Support: [URL] Copyright (c) 1986-2008 by Cisco Systems, Inc.Compiled Tue 20-May-08 18:49 by chendahImage text-base: 0x10000000, data-base: 0x114BE208
ROM: 12.2(31r)SG2Dagobah Revision 226, Swamp Revision 34
System returned to ROM by reloadSystem restarted at 00:36:52 UTC Sat Dec 10 2011System image file is "bootflash:cat4000-i9s-mz.122-25.EWA14.bin" cisco WS-C4506 (MPC8245) processor (revision 10) with 262144K bytes of memory.MPC8245 CPU at 266Mhz, Supervisor II+Last reset from Reload1 Virtual Ethernet interface144 FastEthernet interfaces2 Gigabit Ethernet interfaces511K bytes of non-volatile configuration memory.Configuration register is 0x2102
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Nov 18, 2012
I'm facing high CPU utilization issue due to a ssh process on 3750 switch. What is the use of SSH proces in the switch? Can I disable it for troubleshooting?
will there be any impact if I disable it?
#sh processes cpu sorted 5min
CPU utilization for five seconds: 99%/0%; one minute: 66%; five minutes: 46%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
159 1896078 589986 3213 3.96% 10.76% 14.00% 0 Hulc LED Process
165 32871 591 55619 77.42% 33.40% 8.85% 3 SSH Process
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Nov 13, 2011
which process is consuming high memory with my c6509 switch.
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Sep 3, 2012
We have Cisco ME3400 switch, with configuration described below.
GE0/1 port is uplink:
interface GigabitEthernet0/1
description ***MATED-IUB_C&U-Plan***
port-type nni
switchport trunk allowed vlan 331,450,4085
switchport mode trunk
GEo/2 is configured as below:
interface GigabitEthernet0/2
description ***From NIB***
port-type nni
switchport access vlan 4085
[URL]
We have also tried Loopguard feature enabled on all ports: but after some period same problem is repeated.
version information is below:
Cisco IOS Software, ME340x Software (ME340x-METROIPACCESSK9-M), Version 12.2(25)SEG3, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Wed 25-Jul-07 22:56 by amvarma
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Feb 25, 2013
I have a connection that is loosing packets, my show interface output below summarises the interface where i believe the problem is occuring. My Hardware is 6509 running 12.2
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Apr 18, 2012
we are using Cisco 6509-E VSS mode [12.2(33)SXI] ipbase image and facing high cpu utilization. In show process cpu output it is showing some "ios-base" process consuming cpu. I attached show cpu output
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Apr 3, 2012
We are running a stack of 2 WS-C3750X-24S-E's with IOS version 12.2(58)SE2 and we are seeing continuous high processor utilization involving the hl3mm process. The stack is configured for PIM Sparse mode, with 2 upstream Nexus 5596'es acting as both RP candidates and as BSRs. The hl3mm process generally runs at about 19% but can spike up into the 60% range.Symptoms on the 3750X are spiking latency and sluggish CLI perfformance. I thought at first that we might be running into SDM limits, but the "show platform tcam utilization" show that we are far under the limits of the default SDM template. Performing the "show ip pim (vrf name) bsr-router" command freezes the system and takes 20-30 seconds to return results. Similiarly configured WS-C3750G-12S running 12.2(55)SE3 does not exhibit these same issues.
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May 17, 2011
I have in my router 2801, one link with 20 MB WAN Connection, and it is presenting high cpu utilization with 97% Interrupt Errors when start one download.
I exchanged it to another router the 2811 and it presented the same results. I read the cisco document about Router Performance.
And it speaks about the 2801 supports 46 Mbps using CEF/Fast Switching and 1.5Mbps using only Process Switching, and 2811 supports 61.44 CEF and 1.5Mbps Process Switching.
I need to know if the NAT Process is process switching or CEF Switching. Because if it was process switching the router is working in the max capacity and i will need to exchange the hardware to a better hardware.
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Oct 9, 2012
I have two core switches - 4506E, and i noticed there are frequent cpu spikes on both of the cores switches. As its spikes intermitendly i couldnt able to anlyze the issue. I need inputs on the following,
1) Is there any Free CPU process monitoring tools to identify which process is spiking ?
2) Troubleshooting techniques to identify the issue.
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Oct 13, 2011
Today I've received reports of slow internet access/activity and have noticed myself that it seems a bit slow today. On the dashboard of our asa 5510 the "outside interface" traffic usage is running constantly high. It's at the top of the graph. How can I tell what is causing the spike in utilization. It usually runs at about 1500-2000 Kbps, and now it's up over 10,000.
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Jan 31, 2011
I've got a problem with a core 6509E and the multicast.A client has a system with cams for the physical security and they are connected to a vlan with this config:
interface VlanXip address 172.20.167.1 255.255.255.128ip helper-address 172.20.32.7ip pim version 1ip pim sparse-modeendThe thing is that we know that one server that shows the cams at the security office is flooding the network and the CPU CORE is over 95% always:
CPU utilization for five seconds: 99%/39%; one minute: 99%; five minutes: 99%
263 644650276 567873287 1135 51.99% 55.06% 55.35% 0 IP Input
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Sep 23, 2012
Here is my conf:
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
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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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Dec 27, 2010
We have a Cisco 886 configured with two WAN's (ATM0 connected to a DSL line and Fa3 connected to a CMTS modem).We're running DMVPN over the Cable network and GetVPN over the DSL line. When the DSL line is down we see a lot of CPU peaks up to 90%.The CPU peaks are caused by the process "DSL state machine". As soon as the DSL line has sync and the ATM0 interface goes UP the CPU peaks disappear. What we'd like to know is if this constant extra CPU load will have an impact on other resources like normal routing & switching or more specific IPSEC handling. Is it for example possible that establishing an IPSEC tunnel will fail because of the CPU peaks?
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Apr 30, 2012
I have a new 6509E with 2 sup 2T cards. The 10GE ports on both sup cards will connect to 2 5548s. Can i connect the management interface on the new 6509E to the old 6509 until i free up space to bring the line cards over?
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Dec 9, 2012
I have a couple of 6509-E combined in a VSS system. I need to upgrade them to support 8 (or 16 at max) 10G uplinks. I already used the two built-in VS-S720-10G fiber connectors for VSL links. Which Ethernet modules do you suggest to use? are there any related upgrades that I have to do?
supervisor used: VS-S720-10G
Chassis: WS-C6509-E
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Mar 22, 2011
I have an issue with 7600 router where CPU goes up to 60-70% and memory is also high. Both due to BGP Router process. URL We are seeing this issue since ISP has upgraded their router 20 days ago. Router also seen following error.I have not reset the BGP session with ISP yet. Is there any way I can supress BGP updates coming from ISP and see if CPU and memory USAGE reduces. IOS version 12.2(33)SRD and RSP720 with PFC 3cXL
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Sep 12, 2012
I have an issue with 7600 router where CPU goes up to 60-70% and memory is also high. Both due to BGP Router process. [URL] According to our baseline it should not be more than 40% at any given time. We see high CPU uptp 70% consistently.
CPU utilization for five seconds: 99%/0%; one minute: 57%; five minutes: 55%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
442 66173704 90234125 733 96.86% 46.09% 46.30% 0 BGP Router
7 509291060 26330202 19342 1.17% 3.90% 2.99% 0 Check heaps
Router has 1 eBGP session with ISP from where it downloads whole IPv4 internet routing table and two IBGP session with other two rotuer. When I look at BGP summary table I see many updates received from ISP and sent out to IBGP neighbors. Also did debug BGP updates to confirm it.
We are seeing this issue since ISP has upgraded their router 20 days ago. Router also seen following error.
%BGP-6-BIGCHUNK: Big chunk pool request 628 for community. Replenishing with malloc
I have not reset the BGP session with ISP yet. Is there any way I can supress BGP updates coming from ISP and see if CPU and memory USAGE reduces. IOS version 12.2(33)SRD and RSP720 with PFC 3cXL
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Aug 26, 2012
Based on the stace trace, how do I determine what object is being polled??? (what is causing the high cpu for SNMP ENGINE)
From the “show stack 295” output (SNMP ENGINE)
router>show stack 295
Process 295: SNMP ENGINE
Stack segment 0x68226DC0 - 0x68229CA0
FP: 0x68229BD0, RA: 0x62A0D95C
FP: 0x68229BF8, RA: 0x628276A8
FP: 0x68229C68, RA: 0x629FBE08
FP: 0x68229C80, RA: 0x629FBDEC
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Feb 7, 2011
Each time I enter show run on my router 2821, it takes ages to display and I have a cpu peak from the ssh process ( I am connected through SSH)
RTR-2821-01#sh proc cpu sorted
CPU utilization for five seconds: 96%/21%; one minute: 34%; five minutes: 22%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
55 26948 814 33105 74.96% 16.92% 5.87% 323 SSH Process
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Aug 7, 2012
I want to migrate a Cat 6503-E VSS to Cat 6509E VSS. We plan to use the same supervisor that we have on the Cat6503E, for minimizing the configuration change on the Doing this, the vss link will need to be changed, due to the fact that the supervisor slot will change with the Cat 6509, slot 5 instead of 1.
Question: is there a way to just change the vsl-link interface on a existing VSS ?
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Nov 14, 2011
We suddenly noticed high CPU utilization on one of our 7600 routers. I output of show process CPU showed high utlization for the FM core process. I looked it up but did not find information on what this process does. [code]
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Oct 1, 2012
I have a pair of Core VSS 6509E SUP 2T. Two different LANs, two diff. Subnets. larger LAN has been connected to the VSS pair usng normal SVI and Post-Channles (has lots of closets 3750 stacks) and no problem. Second LAN, two closets, stacked and connected to each other via Port channel and trunk + SVI interfaces. Now, I have SVI interfaces for both LANs on teh VSS pair and that is causing traffic from one LAN to jump over to the other VLAN and rightly so because the VSS pair see both subnets as directly connected subnets. I was wondring if I delete the SVI for the second LAN and only keep the L2 VLAN this will be resolved> The reason for the second LAN to connect to the VSs pair is only that It has to go through the VSS pair to get to the WAN router (both LANs will go out through this Same WAN router) but WAN router is not my concern at this time. I need to isolate these two LANs/subnets traffic so no one VLAM traffic jumps over the other.I have also thought about VRF but at this point I am not sure if teh 3750 stacks supports VRF and if it does how to implement VRF on the second and samller LAN to just allow it go through the VSS pair in order to get to the WAn router.
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Feb 27, 2013
Trying to find documentation on the proper procedure for installing a second sup720 into our 6509-E chassis for sup redundancy. I have found documents that tout how 'cool' and 'awesome' NSF/SSO, and all that is, but haven't found any docs on installing a second sup720 into a chassis that is currently in production and is only running one sup720. In all the years that this chassis has been out, there must me a documented procedure out here to explain this.I have been through the following pages, and have found nothing to this effect.
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Jul 2, 2012
upgrade experience with the 6509E on what IOS version to use. This is a new install, so I want the most current version that supports SSH and works with dual supervisors.
Here is some information:
WS-C5609-E with 983008K/65536K bytes of memory
Current version 12.2(18)SXF17b
Slot 5 Supervisor 720 (Active)
Slot 6 Supervisor 720 (Hot)
Just need a strong base code, no advanced services. Let me know if you any additional information.
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