Cisco :: Could Router CPU Became High
Jan 6, 2013i want to know could router CPU became high, if the massavise/ ddos traffic all fowarded to null0 interface?
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Cisco Firewall :: ASA 5510 7.2.1 High Traffic On Outside Interface Very High Input?
Oct 13, 2011Today 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.
View 6 Replies View RelatedCisco WAN :: 2801 High CPU Load / Low Traffic / High Interrupts
Nov 26, 2012We installed a solution with 2 Cisco 2801, BGP multihomed failover.
1) The router which is currently getting all the traffic gets to 55% to 60% of CPU usage when handling 40 SIP/RTP streams . This equals 10Mbit up/10Mbit down and it showed around 5800 packets TX and around 5800 packets RX, with a majority of them CEF switched. As those figures are way less than the performance figures published by Cisco, we wonder if we made any mistake in setting up our router, or if we can do something to improve the router setup.
2) Does it have an impact on router performance if we increase/decrease RTP packet size, thus increasing or decreasing the pps relative to the consumed bandwidth?
3) If it is not possible to improve router configuration, we also wonder about possible replacement units for those routers. Would a 2901 do a good job? By how much would it rise the capacity? What other models would you recommend if we plan to rise the number of concurrent calls by a factor of 4 or even 8 times of what we have now (so up to 48000 pps and 80Mbit).
Here is what we tried:
- ip route-cache same-interface does not seem to improve anything
- ip flow ingress on or off makes no difference
- disabling the inbound ACL on fa0/0 seems to reduce load by 10%, although I don't understand why - a very high percentage is CPU interrupts, and ACLs are process switched, or not?
- we tried following the Cisco guide for high CPU due to high interrupts, with no success
Here are some usage statistics:
The graphs that we plot via SNMP show a propotional growth/increase of CPU and bandwidth (and thus pps) At the highest loads, we had a bit more than 55% CPU utilization with more than 50% interrupt CPU.
CPU utilization for five seconds: 36%/30%; one minute: 30%; five minutes: 30%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
127 13140 954 13773 2.00% 0.29% 0.07% 194 SSH Process
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Difference Between High-power And High-gain In Wireless USB Adapters
Nov 12, 2011what's the difference between High-power and High-gain wireless USB adapters.
View 5 Replies View RelatedCisco WAN :: High CPU With 7204VXR B-RAS Router
May 15, 2011We have a Cisco 7204 VXR Router and it is having a high cpu issue for the past few days. [code]
View 8 Replies View RelatedCisco WAN :: 2801 Router Having High CPU 99%?
May 29, 2012We have one Router Cisco 2801 at the customer site and facing issue of having very High CPU coming to 99%.CPU utilization for five seconds: 99%/28%; one minute: 99%; five minutes: 98%
View 2 Replies View RelatedLinksys Wireless Router :: High Ping And Latency Using E1200 Router
Nov 3, 2012I recently moved from an old apartment in Downtown Montreal, to a suburb area, but still close to where I was before (10 km). I am using the same ISP provider, Videotron. The same speed. I was playing this game, Chivalry Medieval warfare, perfectly fine before, but now something is really wrong. Whenever I join a server, my ping skyrockets up to close to 200, sometimes drifting to 130 but never going below... and often rising back up again.Keep in mind that I filter servers by their pings. I only join servers that display a low ping (although often I won't see any, when I refresh.. there they are). I'll see a server with 30 ping, join it, and be at 200.It's entirely unplayable. Not only is it impossible to properly time parries anymore, but I also get a lot of rubberbanding. I've tested the internet here, and the speeds are accurate. 10 mbps down, 1 mbps up. I am connected to a Linksys E1200 router. I've tried everything I can possibly think of.I went into the router setup, disabled the firewall, added myself to a DMZ, tried to forward every port... rebooted the modem, my computer, the router, tried a different Ethernet cable.. nothing is working. It's very depressing. Nothing has changed on my own computer in the move. I also notice there is a delay of a second or so before I start to load a webpage when I click a link.
View 9 Replies View RelatedCisco WAN :: High CPU Utilization On Router 2821 With 12.4 (24) T1
Jan 19, 2010I have a Router 2821 with c2800nm-advipservicesk9-mz.124-24.T1.bin and with a Cisco Integrated Service Engine(s) Cisco Unity Express 7.1.1 in slot 1 , this router shows a high cpu utilization.I think is a bug with the IOS , because there is no voicemail configured on the CUE, there is no traffic to the CUE , just traffic from:
- voice calls
- ospf
The ospf is not the cause of the high cpu , because the high cpu utilization appears before I put the ospf proccess on the router.
Cisco WAN :: High CPU Utilization On 7609-S Router?
Jan 20, 2011Have high cpu utilization on Cisco 7609 router. when i check output "Sh proc cpu sort".
View 2 Replies View RelatedCisco WAN :: Need To Replace Router 831 With High End Model
Jul 19, 2011Our one of the Client need to replace CISCO 831 router with high end router , there will be around 60 to 70 users accessing this router for Internet surfing. Right now 831 having 3 Ethernet and 4 Fast Ethernet Ports.
View 4 Replies View RelatedCisco WAN :: High CPU Utilization Router 2801?
Apr 12, 2011I have problems with the Router 2801.When i give the command show processes cpu, the command show me that the router is working in 98%.
I have vlans like voice vlan and others, I have one 20 Mb Wan Link and I redirect all traffic from my lan to this link and when i browse in internet or i do downloads the router goes to 98%, when i don't make it the router processes goes down.
I thought be problem with hardware, but i exchange to another router and the same problem happened.Before this situation, I had one link with 12 Mb and nothing happened, when i exchange this to the 20 mb link the problems starting.
Cisco WAN :: High CPU Utilization On 2811 Router
May 9, 2011there is no logging in the access-list (there is only one inbound access list).Using QoS or not, doesn't seem to make a differenceAll route-caching features are ON. (CEF, Flow, Policy, Fast)Yet the minimum CPU utilisation I have seen is 25%/25%... On average it's 40% during the day, but once traffic picks up to around 6000 packets per second, the router is gone...I have a 50/50 Mbps connection, but I can use only 6 for VoIP ?
Show interfaces:
GigabitEthernet0/0 is up, line protocol is up
Hardware is MV96340 Ethernet, address is 0014.1c26.7c30 (bia 0014.1c26.7c30)
Description: $ETH-LAN$$FW_INSIDE$
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 6/255, rxload 7/255
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Cisco WAN :: 7200 Router Facing High CPU Utilization
Dec 6, 2012I have on 7200 series router with NPE-G1 module which is facing high CPU utilization. I have not found any particular process causing this high CPU utilization as it is caused due to interrupts. I have already enabled fast switching by "ip cef" command. Please suggest how to normalize the utilization as it is impacting the network and causing slowness. Please find below the output of show process cpu and also find attached the show tech of the device. Also let me know if any other output is required.
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Cisco WAN :: 7600 High CPU Usage BGP Router Process
Mar 22, 2011I 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
View 1 Replies View RelatedCisco WAN :: High Memory Utilization In 7206 Router
Jul 29, 2012We have a 7206 router which acts as a MPLS Hub router for around 100+ remote locations. Bandwidh at mpls hub(terminated on this router) is 50 Mbps.
We have noticed that Memory utilization in this router gradually increases and when it reaches 100% this router hangs. It happence in frequesncy of 10 days and we have to restart the router when memory is 100%.
CPU utilization is normal i.e below 20%, WAN bandwidth will never cross 30mbps.
We are running OSPF on this router
Cisco WAN :: 7600 - High CPU Usage BGP Router Process
Sep 12, 2012I 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
Cisco WAN :: 3640a Budget Router With High Throughput?
Apr 5, 2011I have a 3640a, 3550 and airopoint 350 I use for my home internet connection. I know it's old equipment, but it's all I could afford at the time. Directly plugged into my modem I get about 10 mb/s, plugged into a switch port no greater than 6, and about 5-6 when connected to wireless which is understandable because it's only wireless B. I'm going to downgrade my connection for the time being as I'm paying for excess bandwidth that I'm unable to use, but any more recent, affordable cisco routers that can handle a high speed cable connection? What kind of throughput does the 3550 get? Cisco states a throughput of approximately 45-60mb/s for the 3640a.
View 14 Replies View RelatedCisco WAN :: High CPU Utilization Router 2801 - Interrupts
May 3, 2011I have problems with router 2801, the version is
Cisco IOS Software, 2801 Software (C2801-ADVENTERPRISEK9-M), Version 12.4(24)T4, RELEASE SOFTWARE (fc2)
When i start a download the processes of the router cpu stay in 99%/97%. When i'm not doing a download the processes stay in 3%/0%. I have one 20 mb link to Wan.
I did the troubleshooting seeing the this document :
[URL]
Cisco WAN :: 2811 Router With High CPU (processes Are Fine)
Sep 24, 2012I have a 2811 Router that is experiencing high CPU utilization. I have already issued the "show cpu proc" command, and everything seems to be fine (it's not a process issue) . According to our traffic graphs, we've seen that CPU is related to high link utilization, since we have 2 Fast Ethernet interfaces (Internet 4 MB and MPLS 6 MB), and when those interfaces have to deal with a lot of traffic at some hours, the CPU Load increases in the Router.
I found an article where they say that 2811 ISR Routers can deal with up to 61,44 Mbps (120.000 pps), but our router is far away from reaching that limit.It usually manages up to 16 MBPS. This router manages some services such as NAT traslation, ACLs, voice traslation profiles, policy routing (QoS), firewall and DHCP.
What can be happening to the router?.. Is it normal that when it has to process a lot of traffic, its cpu must increase up to 95%, even if it is handling just 16 MB compared to the theorical 61 MB? Is there any command or tool that I could use to troubleshoot this issue? Is there any limit in terms of WAN traffic that it could handle? How much influence do those services have over CPU Utilization?
Given these incidents, which router series could suit better in my network to avoid high CPU issues?
High Ping At Nights With Belkin Router
Jun 3, 2012I have a Belkin N Wireless Router Model: F5D8236-4 v3 with the latest firmware my problem at nights i have high pings around 200 ms especially when playing online games. This is only at nights.I tried connecting my computer directly to the modem and it doesn't cause any trouble so im assuming the router is the problem.I have 3 computers wired connected to the router. I was the only one using the network when i was doing the tests so i don't think the others computers are causing the problem. My computer is running Windows 7 SP1 and the router wireless and my antivirus firewall are off.
View 13 Replies View RelatedE2500 Router Not Obtaining IP From ATT High Speed DSL?
Jul 3, 2012So I received a new modem today and wanted to tandem it with an extra router that I have so I can get wireless at work. Here are the steps I've taken:Verify modem connection works connected directlySet modem to bridge modeReset router, set to PPPOE with proper log in Try to connect, and get the message "Could not obtain IP from PPPoE"I've researched as much as I could stand online, and found these to be the major steps everywhere, most people miss the bridge mode but I'm sure I've done it properly (switched back and forth atleast 5 times). I don't currently have access to the connection but I can respond tonight to questions about what else I may or may not have done, and will take what is suggested here to try tomorrow
View 14 Replies View RelatedHigh Router Ping And Random Disconnects?
Jan 25, 2013I have been having a high ping issue both via a cable and wireless. When i connect via wireless, it is generally 2 ms, sometimes goes up to 4 and 5 and rarely i get packet losses. Via a cable, i get usually 1 ms, and sometimes 2 ms. It generates a problem while online gaming and btw i tried changing channels and it didnt work. I even get same pings when i am 3 meters away from the router compared to less than 1 ms pings.
View 9 Replies View RelatedCisco Switching/Routing :: 2821 - Router High CPU Utilization?
Sep 25, 2012We've got Cisco 2821 for our 90mb/s Internet Access. Its CPU usage is around 80%. Show process cpu does not show any cpu proccess with high utilization. But we have got plenty of policing configured for our clients using policy maps. Can this policing affect cpu usage?
View 1 Replies View RelatedCisco WAN :: Routing Loop Due To High Utilization Of Router 3745
Dec 31, 2012I've came across a very odd topology to deal with where everything is connected to everything, without proper utilization of VLANs.
- I've an L3 SW and a 3745 RTR at core
- Both are carrying same subnet to an L2 distribution switch that connects server farm within the same subnet (i.e. 1.1.3.x subnet)
- The L2 switch works as a passive switch, hence another network say, 1.1.2.x has been plugged into it as well.
- This L2 switch extends to other switches without configuration of any VLANs or STP and distributes 1.1.3.x network.
Periodically and unexpectedly, the router starts hanging and utilization goes beyond 80%, and there's nothing at all that is observed in "sh proc cpu" to be eating router resources. Its quite difficult to observe the pattern, as its random.
Netgear WNDR3400 Wireless Router Causes High Ping?
Jan 23, 2011I recently got a Netgear WNDR3400 Dual Band Wireless Router. When I first installing it everything seemed to run great, download was about 1.5 Mbps and a good ping, 20-70 for gaming. This lasted about a day. While the download does vary due to the service provider, my ping however has suddenly increased to a constant 200-400. This is happening on my Laptop, X-Box 360, and PS3.I have tested both wired and wireless connections from the router and used both the 2.64Ghz and 5Ghz frequency and I still have the same issue. I have then done a wired connection straight into the modem and my ping returns to the 20-70. My Router is less than 3 ft from all systems. I live in a barracks so there are multiple wireless signals floating about. However no one else seems to have any issues with there ping when using a wireless router and there only 1 room above me. I have changed channels on both frequency's, enabled and disabled NAT Filtering, decreased and increased the MTU size within the WAN settings, reset the router to factory defaults, ensured I have the proper firmware, and proper software for my laptop.
View 8 Replies View RelatedRecommend Router High Open Connections Without Freezing?
Jun 4, 2011I have been looking for a new router as my current one has packed in. I am mostly interested in a router with a fast and stable wifi and high throughput which can manage a high amount of maximum simultaneous connections. The linksys e4200 seems perfect and very well reviewed.I am currently on adsl, no cable in area, so i would need one to have an adsl modem. Is there a version with a modem? Or will i need to look around for another?
I am mainly interested in throuput and the reviews and comparison sites sugest that linksys seems perfect midway between max simultaneous connections and price. Any comparison website that has adsl routers. The information am looking for on that's between £60 and £160 with high amount of ram, high throuput for Maximum Simultaneous Connections, similar to link text
Linksys Wireless Router :: E2500 Not Getting High Speed
Jul 8, 2011Internet speeds through my modem are 15+mbps.its usually at 1-5 mbps.This woudln't be such a big deal only that now I lag in online gaming.
View 7 Replies View RelatedLinksys Wireless Router :: E3000 - Temperature At Bottom Getting Very High
Jan 12, 2011Yesterday I installed my new E3000 router. After an hour I noticed that de temperature of the bottom was very high and it stil is . Is that normal?
View 7 Replies View RelatedLinksys Wireless Router :: E2100L Having High Spikes Of Ping
Nov 19, 2012I decided to change my old Belkin router to a Cisco one, and ever since i've got all sort of problems with internet connection.I'm a gamer, and my brother as well, and with the Belkin router we never got any issue, but now when we try to play together online we get serious Ping problems (We usually play at 80ms, but for a couple of seconds it reaches 800ms.. then it goes back to 80 ms).I have a 20 mb Conection with no P2P restriction, I'm using only Wireless-N connection, with only 20 Mhz and in Ch. 9 (2,452 Ghz).I also use a WPA2-Personal password and QoS System to give more priority to my PC and my games (DotA2 and WoW).This problem only happens when we try to play 2 games at the same time (e.g. DotA2 and WoW, or DotA and DotA, etc). Well i actually think Cisco might be better (Well, I payed extra money for "quality") but then again, with all those problems.
View 2 Replies View RelatedHome Network :: WRT310N Linksys Router - Exceptionally High Pings
Jul 14, 2011Using a WRT310N Linksys Router and just today at 2PM I received the largest and longest lag spike ever, it is still going on as I write this (10:00PM). I am receiving pings of 500+ ping and my download speed spikes like crazy. Here are my speedtest.net results.Here are my results from Netalyzr URL
View 4 Replies View RelatedLinksys Wireless Router :: E2000 Very Slow - Need High Upload Speed
Jul 11, 2012I bought an E2000 router as a replacement for my WRT54G router, since my internet speeds had been upgraded. But this E2000 router has been giving me nothing but trouble.
Wired through both the router or modem, I get my topspeed of 110mbps. However, as soon as I switch over to the wireless N function, my speed drops to only 25mbps. As far as I know, wireless N should have a much faster speed than that. Even my old WRT54G had faster speeds than this new router has. Mind you, that the distance between my laptop and router is about 3 inches away. The further I go away from my router, the speed exponentialy drops (20 feet, and the speed even drops to below 10mbps). Even with different laptops that have completely different wireless cards. Now honestly, I have tried EVERYTHING to get the speed up. Both 2.4 and 5ghz, 20mhz only, 40 mhz only, different channels (currently the router is in channel 11, being the only router in that channel), setting the network to G-only. I tried changing the Beacon interval thing in numerous settings, I even tried changing the MUT. Firmware is completely up to date. I have also tried placing the router on a completely different place, to make sure there was absolutely no interference (tough that shouldn't be an issue if my laptop is only 3 inches away) I tried changing the security mode to something different than WPA2/AES.
Nothing worked, if anything, it made it worse in some cases. I have litteraly tried every option I could find online, except for trying a third party firmware like DDWRT, which worked excellently for my old WRT54G, though I read that speeds can't be improved on this E2000 with a third party firmware.
Is there anything else I can do, or should I assume that my router is defective?
When I'm in my bedroom, I get a very poor connection and my speed drops to about 0.25mbps. Abysmal, so I bought a WiFi range extender to get me a better signal. It works, and it allows me to get a speed of about 5-6 mbps, without dropped connections. Still slow, but at least it works. The weird thing is, wired through my router or modem, I get about 9mbps upload speed. With this extender, I get the same 9mbps upload speed in my bedroom, though only 5-6 mbps download speed. You'd think that the upload speed would drop simultaneously with the download speed. How can my upload speed be higher (maxing out) than my download speed? I wonder if my transmitting antenna of my router isn't defective.
Linksys Wireless Router :: WRT54G Can't Handle High Internet Speed
Apr 16, 2013I have the WRT54G v2.2 router. I have Comcast internet service. Comcast has just increased their internet download speed to 50Mbps. With a wired computer (not wireless), connected directly to the router, the fastest internet download speed I get is 30Mbps. When I called Comcast's technical support, they are telling me I need a new router as the older routers can't handle these high internet speeds.
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