I have a one question. I am using Cat3750x-48 switch. Suddenly it has occurred following high CPU log message in Cat3750x-48 switch.
%SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 62%/0%, Top 3 processes(Pid/Util): 162/40%, 156/10%, 74/1%
What is meaning of PID 162 ?
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.
View 4 Replies View RelatedSeeing very high CPU on one of our 3750X stacks. Usally its around 30% but recently its 70, 80, 90 or maxed at 100% during the main day.IOS version c3750e-universalk9-mz.122-55.SE1.bin.Has a ten gig uplink connected to a nexus 7k and another ten gig connected to another 7k. Running Layer 3 and EIGRP on the 3750X.Is this normal for the CPU?
#sh processes cpu history
5555555554444455555555555555588888666669999888885555577777
8888000001111111111222227777755555666662222222229999977777
100
90 ***** ****
80 ***** ********* *****
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We recently configured a stack of four 48 port 3750-x switches . We are noticing high CPU usage. "Hulc LED process" seems pretty high. This has coincided with VMware servers getting slow and non-responsive at times, perhaps a coincidence, not sure. Below I provided some outputs about how to diagnose it.
View 13 Replies View RelatedI have a 2 Cisco 3750X stacked working as CORE switches but not in production yet showing a high CPU utilization and I would like to see with you whether you think this is normal or a IOS upgrade/downgrade should be performed.
I have very low traffic coming through as this is not yet in production:
122222333331111122222222222222222222222221111122222222222222 933333999999999922222777772222277777333339999922222111111111 100 90 80 70 60 50 40 ***** 30 ***** ***** ***** 20 ********************************************************** 10
[Code].....
We have just purchased Cisco 3750X 24 S switches (QTY 2), last week we put them in prodcution in simple Layer 2 mode. No Core, just act as Access switch in order to only check the performace and availibility of switches.
But strange thing I have noticed the highest cpu utilization, cpu sits on 13 to 14% and from historical logs it hit above 60%. I am confused what is happening. Remember to terminate copper connection we have inserted Copper SFP Modules on both switches.
Both switches connected on Layer 2 mode via trunk, in LAN environment we have here 7 3Com 2824 Management switches which are terminated on Copper SFP modules at Cisco 3750X 24 S. All 3Comm Switches uplink are terminated on Cisco 3750 Switch 1, another switch is idle. Whole setup is running on VLAN1 .
Also refer no port in TCP and UDP packets in show ip traffic. any abnormal condition you predict..basically, In near days we plan to make these switches as Core layer and run intervlan routing, HSRP/VRRP and OSPF. But in this cpu usage how we can go ahead until this resolved..
The process "HL3U bkgrd proce" is causing high CPU usage issues in a switch 3750X-24T-L. The IOS is 15.0.2-SE2.
show platform ip unicast failed route and adjacencies displays a lot of entries, I've seen up to 1200.
After restart HL3U bkgrd proce takes around 10 - 20 % CPU, some hours later 99%.
A coupe of times we got logs like this:
%SYS-3-CPUHOG: Task is running for (2136)msecs, more than (2000)msecs (172/73),process = HL3U bkgrd process.
-Traceback= 0x1BE9C3Cz 0x27E103Cz 0x27E0F64z 0x50DCF8z 0x50DE98z 0x503BD0z 0x4F7718z 0x1FF0A18z 0x1F46DECz 0x1F4816Cz 0x1F48698z 0x1F499C8z 0x1FF15D0z 0x2000430z 0x1FF55B4z 0x1FF5FA4z
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i am seeing very high utilization on a random basis on the stack. and the logs indicate me that there is a pattern where there is a stack power cable shows inserted (which was never unplugged) followed by sudden spike in the utilization.
001018: *Mar 6 16:21:22.138: %PLATFORM_STACKPOWER-6-CABLE_EVENT: Switch 4 stack power cable 1 inserted
001019: *Mar 6 18:18:37.982: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU
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We had a stack of 4 qty 3750g running IP base on ver 12.2.32, then installed a 3750x to the stack and upgraded the whole stack to 15.0.2 SE3. In doing so, we noticed that the memory utilization jumped from 60-70% to 83-84%.
We had the same issue occur when upgrading to 15.0.2 SE3 on another stack that was 6 qty 3750g running ip-services, but this one jumped to 90%. On the 6 qty stack, we downgraded to 12.2.55 and the memory util went back down to 60-70%.
On the mixed stack, we replaced the 3750x with another 3750g and downgraded the whole stack to 12.2.55, however, the memory utilization did not drop down. As far as I can tell, no config changes have changed from the original IOS.
I am in the process of installing a 3750x (IOS 12.2 (53r) SE2 IP Base) Cisco Catalyst switch in a new network of just 2 PC's (2 hosts, OS windows7 64Bits). I have enabled SVI interfaces with the both hosts installed in 2 different network segments. We then start connectivity test. The response time for the PING command between both hosts remain below 1 millisecond, whereas the response time between the hosts and their correspondent SVI interface is variable, and at all time is higher than 1 millisecond, sometimes it reaches 17 milliseconds. (Note that the switch CPU usage is only 8% at the time of testing) We have performed this same connectivity test changing the 3750x switches and in two different locations obtaining the same results.
View 2 Replies View RelatedMy management has tasked me to give them a high level overview of the different switching we can choose for our new building.
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
I am working on the spreadsheet and it looks like this (Not totally filled):
2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board. For the IDF's I was thinking of two 4010's.
i cant find any difference in these two devices when i am trying to compare throughput.I need upgrade our new POP and there will be around 4900 MAC adresses in VLAN 150 and 130 MAC adresses in vlan 200.Uplink is 1 gig routed internet connection and there is 14 downlinks to separate villages.i found a few differences for eg stack interface on 3750x but i dont need it.
View 2 Replies View RelatedI have a stack of 2 x 3750X switches these are running 12.2(55)SE5. I needed to add some static IP routes and found that the ‘ip routing’ command is not supported. I came across a document that stated “On switches running the LAN base feature, static routing on VLANs is supported only with Cisco IOS Release 12.2(58)SE and later.” So I have upgraded to 12.2(58)SE2, but ‘ip routing’ is still not a valid command.
The release notes state:“On the Cisco Catalyst 3560-X and 3750-X Series, it adds support for 16 static IPv4 routes in the LAN Base image.”
I have read other posts that talk about running the ‘sdm prefer routing’ command which I have done, but I am still unable to add any routes or run the ‘ip routing’ command.
I have an 1811 with several subnets connected to it.I recently installed a 3750x plant and want to bring my interior routing back to it.
All the routing is handled by the 1811 via secondary interfaces on vlan1?
I have 192 ports, and subnets show up on almost all of them. None of the ports are assigned to any specific vlans. Most ports have several subnets on them.
What is the best approach to getting the 3750x to handle the routing?
my company pay a switch 3750 X. WS-C3750X-24T-E. It uses IP services basically but I failed to configure InterVLAN routing. why interVLAN routing doesn't work on my switch?
View 10 Replies View RelatedI am setting up a vm environment for a customer in my lab off site. I have two stacked 3750-x switches, a san, and threes UCS c220 M3S servers for hosts. I am trying to separate the lan traffic, san iscsi traffic, and san management traffic using vlans. The problem is i'm unable to communicate cross vlan with my current config, which I have attached to this post. The only noteworthy things in my conifg is that the ip route 0.0.0.0 0.0.0.0 192.168.83.6 is referring to a switch stack they have on site, that I will connect this stack to using the first two trunk ports on each switch, that I do not have here in the lab. I don't want to cause any confusion in why I have things set a certain way.
View 1 Replies View RelatedWhy does my 3750x-12s switch say it's not supported in CNA??? I upgraded to CNA 5.7.1 and still says unsupported. This device is supported or I'm just missing something.I use CNA heavily to manage our MANY vlans.
View 1 Replies View RelatedI want to confirm this is a licensing issue. On a 3750X with ipbase, I cannot create a vrf. So I would need the universal image, and that is a seperate license, correct?Is there a link that describes the difference bewteen ipbase and univeral images?
View 6 Replies View RelatedI have a query regarding attached Network Design
PC---2960---3750(One Routed Port and All Switched Port)------------------------ 3750(One Routed Port and All Switched Port)-----2960------Internet
I have many Vlans on left side of image , Right Side of Image is having internet connection via Modem, and local connectivity between VLAN works fine but Other Vlans Except Vlan1 is able to Access Internet.Note that 3750X did not have NAT Feature ,How should I able to get Internet on Other Vlans (10,20)
scenario A
A site .
PBX --->
Data ---> other brand router ----> 3750X ---> wan
[Code]....
How to know whether QoS work on the 3750X or not ? Is it correct about the config in scenario A ?
There seems to be a lot of conflicting information on what can and can't stack together in the 3750X range.
I know that LAN Base can only stack with other LAN Base switches.
Can IP Base stack with IP services in 3750X? I have also heard that the 15.x.x IOS restricts mixed feature set stacks?
I know that Cisco recommends that all switches in a stack have the same IOS and feature set but having all IP Services in a stack can get too expensive.
I'm trying to review a QoS setup, and I'd like to make sure I fully understand the current setup before I change anything. I'm seeing output drops on two different queue-thresholds, but not sure how packets are making it to one of the queues.
Switch Version
CORE#show ver
Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 15.0(2)SE, RELEASE SOFTWARE (fc1)
System image file is "flash:/c3750e-universalk9-mz.150-2.SE/c3750e-universalk9-mz.150-2.SE.bin"
cisco WS-C3750X-24 (PowerPC405) processor (revision A0) with 262144K bytes of memory.
Switch Ports Model SW Version(code)
I can find queue4-threshold3 in the mappings, but how are packets getting mapped to queue2-threshold1? The priority queue is disabled for this interface, so I'm not sure how this queue is dropping packets, according to the maps nothing is mapped to 02-01.
I am building a switch stack using 4 48 port 3750X switches that will also have the power stacked. If I install a single 715W power supply in each switch will the stack support 802.3af accross all 48 ports on each switch? My calculations are 48 ports x 15.4W which gives me almost 740W needed which is over hte 715W power supply. I was reading somewhere were it mentioned that in a powerstack additional power can be drawn from the stack. I know this will not work if you are trying to support power on all switches accross all ports but would it if say 2 of the 4 switches are needing to provide PoE accross all 48 ports? If I say we can only use 24 ports per switch for PoE that drops the power need down to 370W which I believe should work. Just trying to get a better understanding of PoE consumption. Would the best solution be to just add a second power supply to each switch?
View 8 Replies View RelatedI 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 ?
I have a switch which is rebooting it self, we bought it a year back,its a new switch, i did not find any error on sh ver after rebooting. I am using OP manager, i did not receive any alerts. I have done all diagnostic test, all are passed, i did not find any problem..
View 2 Replies View RelatedI am having an odd issue on a couple of new 3750X switches.I am trying to configure VRF-lite and it is not recoginizing the command.Does that make any sense? I have goggled the syntax ans it should be right.
View 12 Replies View Relatedwe are replacing network equipment at one of our sites. The network will have 12, 3750X switches(6 stacks) - one stack will be the core. A 1002 will be the WAN router to the Main campus. The 1002 will connect to the core via 2 ethernet cables. I'm debating whether to use L3 or L2 between the router and Core. I've heard that routing is more efficient if L3 is used and also I will be able to create an L3 etherchannel between the 1002 and Core switch. See the attached doc.
View 6 Replies View RelatedThis 3750X stack (3 members) has some 100% cpu spikes. Is this bad enough to start tracking down the cause(s) or is this somewhat typical and not a reason for concern? I just took this reading. How can you detemine when the 100% and 80% spikes occurred?
2222233333333332222222222444442222222223333322222222222222
7777733333333338888888888000007777777770000077777888887777
100
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I have two WS-C3750-48PS-S switches and I need to add two more. The new part number I am looking at is WS-C3750X-48P-S will these all stack together ?
View 2 Replies View RelatedThis is my scenario. I have my IP as 172.16.1.1 (aaaa.bbbb.cccc.dddd) which has full internet access. Now when i am not available in the office, i noticed some one assigning my IP in to his workstation and gaining full internet access. How do i restrict such things? i.e. even if some one assigning my IP on the network, they shouldnt access LAN or WAN.I tried 'arp 172.16.1.1 aaaa.bbbb.cccc.dddd arpa' configuring on my L3 Cisco 3750X switch assuming i can acheive, but that did not work.
View 8 Replies View RelatedIf the 3560 or 3750 "X" series support GRE.I am pretty certain the older 3750-E does not support GRE (both in hardware and software)Was hoping the new super duper X series do. If not, it could get expensive
View 5 Replies View RelatedI have been looking to find out the list of features that the IP Base IOS has for the 3750X series switch. What would be ideal is a comparable list but essentially I need to know which of the LAN Base/IP Base/IP Services has SSH functionality.
View 1 Replies View RelatedI recently created a stack using (2) 3750x switches. I have three vlans on the stack (1,105,241) Vlan 105 is configured on 6509 core switches with multicasting and are connected to the stack via gigabit fiber. It is working well with clients on the Master or SW1, however clients on SW2 do not participate in multicasting Any client pc that is connected to SW2 vlan 105 does not show up in the "sh ip igmp snooping group" command. I can statically assign a client on SW2 to the mcast groups but but they fail to register on their own. I can take the cable connection from SW2 and plug it into an SW1 Vlan 105 port and it immediately becomes a member of the groups. I can then connect it back to the SW2 port and it disappears from the group membership. IGMP and PIM are configured with the defaults.
View 3 Replies View Related
