Cisco :: Catalyst Switch 6000 - Process Snmp PDU Dispatcher Causes High CPU Value
Mar 28, 2012
I have a Catalyst Switch 6000. Inoticed that after the execution of the job inventory in LMS, and after the snmp queries reached the equipement, the cpu value reached 98-99 % due to the process : PDU DISPATCHER (what’s it ?)
I have also a script running in the switch to observe the differents logs. For exemple, when high cpu is obtained, the message bellow appear :
« %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input
« %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input
« %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input
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
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?
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.
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
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
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
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
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
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.
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]
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
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 -------------- 2588 IP ARP entries, with 166 of them incomplete
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
document which explians normal booting sequence in a 6500 Switch running IOS. What I am looking for is in which order the image is loaded in SUP, RP, SP etc
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.
I am in the process of swapping out an older 24 port Cisco catalyst 3525 POE switch running IOS 12.0(5) with a 48 port POE catalyst 3560 running ios 12.2(50)The trunk port on the older switch (that currently works) is in port Gig0/1 with as basic of a trunk config as you might find.
In the newer switch I have a 1000BaseSX SFP min gbic with a SC-LC fiber cable attached (8.3/125 – 15 meter.When I make the connections, I get no lights… no connection.
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.
I'm a C# programmer and as part of my software I need to monitor some Cisco Catalyst 3560V2 24 switches using SNMP (By reading MIB/S data).Apparently this switch supports more than 50 different MIBs.My question is which MIB/MIBS contains general health data (parameters) that may determine if the switch is OK, Degraded or Malfunctioned.
I would like to be able to query the dot1dStpPortState obect on the Catalyst 2960-S on our LAN . Im running firmware c2960s-universalk9-mz.122-55.SE2.bin and according to the Cisco SNMP Object Navigator the object is supported (via the BRIDGE-MIB).However when i query using snmpwalk from my workstation :snmpwalk -v 2c -c bic-zua-ro 10.u.y.x 1.3.6.1.2.1.17.2.15.1.3 I receive and error .SNMPv2-SMI::mib-2.17.2.15.1.3 = No Such Instance currently exists at this OID For the sake of comparison, querying our 4700 :snmpwalk -v 2c -c bic-zua-ro 10.u.y.x 1.3.6.1.2.1.17.2.15.1.3 returns (as expected, cropped)
Is there some special configuration i need to do on our 2960's. The only snmp related settings i can see in the running config is snmp-server community. In this case :
I recently picked up a Catalyst 2960G and am trying to get SNMP management working over IPv6. I have the IP Address set to the local link, and can successfully ping and telnet to the switch (so the network can get traffic to and from the switch). However, SNMP packets just seem to disappear. I am running WireShark on my machine, and I see the packets go out to the proper IP, but nothing comes back. When I check "sho ipv6 traffic", I can see where there are UDP packets that are received, but, again, none going out. Also, when I run "sho snmp", all of the packet counts are 0.
Here are some relavant snipets from my "sho run":
interface Vlan1 no ip address no ip route-cache ipv6 enable
which models of HP ProCurve or Dell PowerConnect support 64-bit IF-MIB counters, or for that matter any other manufacturer (Zyxel?) (snmpv2 or v3, OID .1.3.6.1.2.1.31.1.1.1.6)I believe pretty much any Cisco Catalyst above a 2950 do, however don't believe any of the SG series do. I realize I could pick up a 2960G for $1500-2k and be good to go, but I forsee a larger switch purchase in the future, but still could use a switch in the meantime that was able to allow accurate monitoring of closet uplink bandwidth?
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.
The switch 6500-E is frequently crashing whenever the pm scp process reach 100% .I got it under the command "remote command switch show proce cpu".How to solve the problem. I opened the TAC and the engineer says to upgrade the image12.2(18) sxf.Is there any other work around that would avoid to reimage the switch and reloading.
I have a question about SNMP OIDs for the command "show counters interface intx/y delta" on Catalyst6500. The customer wants to create graphs for the following values:Overruns, qos0Outlost, InErrors, OutErrors, InDiscards, OutDiscards etc..Is possible to get these values using SNMP?
We have a Switch Catalyst 4500, model WS-C4510R+E, with 2 Supervisors, models V-10GE, which is showing high CPU values all times.When this occures, the switch shows 95-100% for total cpu for a few hours at a time.show proccesses cpu shows process Cat4k Mgmt LoPri with an unusual cpu value of 56% The show platform heath command gave me a high reading for K2L2 Address Table R which is curently 9,45% but the last hour is around a 20% average CPU ?[URL] what the process K2L2 Address Table R means and what could be the cause of this peak?
