Cisco Switching/Routing :: ASR 1000 - Checking Link Quality
Mar 3, 2012
We have branches all over the country and we take different links like fiber (Ethernet) radio links etc. Now sometimes when we ping from branch WAN ip to its gateway or to the aggregation router (ASR 1000) in this case, we see some drops, but see no problem in actual HTTP or lotus communication.
What i want to know, that now a days, should we rely on ping results to determine link quality ? or should i use tools like iperf to basically see if the link is actually treating tcp and udp packets properly, I have heard this countless times that normally network devices like Cisco routers, even without any QOS, will give low priority to ping packets.
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Nov 2, 2011
I want to know is it possible to check Internet speed directly in the cisco router thru any command or activating any service in the cisco router?.As it is seen most of the times internet speed offer by ISP is different as compared to clients.and Clients most oftenly not satisfied with internet speed The problem is that our ISP has given us 100MB leaased line.But when we deployed in production network the speed is same as DSL.We have reported this issue to ISP they then carried out Iperf test by connecting laptop directly with the ISP router.They have tested the speed and it shows about 94-96 Mbps and argu that it is up to the mark and there is problem at your side(i.e our internal network).Now our internal network has cisco 1841 router connected directly to ISP 3825 cisco router.Our router has minimum configuration as required to pass traffic out and in.Our internal 1841 router is connected to switch to which different clients are connected.We have performed some online tests using different speed checking websites and also perform real time tests by uploading and downloading files.The speed is much low as compared to 100Mbps and it is nearly or slightly higher then as DSL connection. how can we check internet speed in the specified scenario?Is there any command or service available in cisco router to check internet speed as we want to check ISP connection speed directly thru 1841 router?what about authenticity of online speed checking websites?Any specialize software/tool you recommend to check Internet speed in specified scenario?
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Apr 23, 2012
I have a WS-C3560G-24PS service as a distribution switch with six (6) WS-C2950T-24 connected to it. In looking at the utilization on the inter connect links no one is running close to a gig speed and this includes the link between this switch and the core. The CPU load (6%) and memory utilization (30%) on the switch do not seem bad so what else does one watch to see if it needs an upgrade?
We are starting tohave discussions about any needed upgrades on the network. I have an ocassional user that complaines about low performance but looking through the network I can find nothing glaring on a consistent basis that says an upgrade is warranted. I am however looking at things such as the above. Utilization on links, CPU, memory, etc.
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Oct 12, 2006
Had problems with voice quality on VoIP with 4500 series switches and the qos dbl feature (which gets enabled by the auto qos feature)?? I have had a couple of customer complaining about voice quality and our voice team spent a lot of time investigating; I had ruled out the network infrastructure because it was all QOS enabled. The voip people came up against a blank so I looked at the network once more and disbaled dbl with hope more than anything else. Mysteriously the voice quality issues the customer was having have now disappeared. Not sure whether a coincidence (though I have done this on two customers now) or something to with with dbl. There is nothing on this on cco.
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Jan 21, 2013
I have a port on 7600 connecting via Single Mode Fibre to my service provider. Service provider has 1000-Full with auto-negotiate. I am seeing following output on my 7600. [code] if this interface is only capable of doing 1000Mb, how come it is showing 100-Full. If I change to nonegotiate option (both my side and provider side), link goes down. My provider has confirmed they have 1000Full their side.
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Feb 6, 2013
Wondering if this switch is capable of being a backbone switch for a network of about 1000+ users and if the switch can handle a sustained 30Meg of data going across it?
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Jan 19, 2012
I took my router with me to visit family at Christmas. It wouldn't allow the wired computer through the switch, but yet I could talk to the router with my laptop. Rather than reconfigure, I bundled up my router & laptop and let well enough alone.Now that they're all back at my house, I can't reliably get the laptop to connect - Low Wireless Signal error. I've reset the modem & router repeatedly. Tried Channels 1,6, 11 and 8&9 too. n only, as that's my laptop's. On 2 occasions it has connected, rebooted and auto connected and run for 4-5 hours. Then it's gone. I've beat this mess for 3-8 hours per day, for days...!!!Laptop(Vista) connects to every other wifi I've tried. It's sitting 4 ft from the router.
misc. info.
separate dsl modem, Centurytel, Netopia Cayman 3300 series
no other devices beyond wired desktop and laptop
no changes in other neighboring networks
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Sep 5, 2011
I'm considering using this cam as a live cam pointed across the street to a beach and ocean view. Would it produce a decent video if used for this purpose? I've been looking around for some sample video from this cam but so far no luck. Any sample sites I could log into to see the 930l in action?
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Sep 1, 2007
Can we force the Gigabit Ethernet port to be 1000 full duplex in Cisco Catalyst Express 500 series?
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May 18, 2012
I tried multiple times to register a username here and no matter what I chose I would only get "An Error Has Occurred" when I submit the info. I've tried this over several days and keep getting the same dead end. So, I went to bugmenot.com and I'm using a generic username that was given there in order to post this. So...there's that...
Starter info... I'm running Hardware Rev A4 of the DIR-655 on the 1.33NA firmware. I never upgraded past that firmware because of all the horror stories I'd read about new firmware here. Up until lately it's been fairly stable. The issues I refer to SEEM to coincide with my recent installation of Apple TV hardware on my wireless network, though I can't confirm. It's never been great with this router, so that could be coincidental. On my network I have a hardwired Mac Mini, wireless Macbook Pro, a hardwired D-Link DNS-321 NAS box, Apple TV, Logitech Revue, iPad, iPod Touch, iPhone and occasionally one each of a Samsung and LG Bluray player (only when they're powered up, which is rarely). I'm also using a wireless repeater in the middle of my house because the DIR-655 doesn't yield a very usable signal in my master bedroom, which is on the opposite side of the house as the router.
With all that being said... I have had terrible issues being able to keep a steady connection wirelessly with this router as of late. Streaming Youtube videos will stop after a few seconds, loading websites will just stop responding all together, and I can't even keep a connection to stream music from my Mac Mini to my phone or AppleTV using Home Sharing in iTunes. I'll get a few seconds of a song and it will just drop out completely. It's been extremely annoying and I'm ready to take a hammer to this router, to be honest.
I've checked my logs and there were all kinds of FIN:ACK, PSH:ACK and SYN:ACK TCP packets that are being blocked. I noticed many of them were coming from Apple IP addresses, so I assume that the AppleTV had a lot to do with those. I actually used the Inbound Filter settings to allow requests from a whole block of Apple IP's, which seems to have settled log items from them down a lot. There are still quite a few that seem to be coming from Google IP addresses (I presume the Logitech Revue since it uses the Google TV interface?), but the Google IP's are too random to go allowing a large block. [code]
I have Advanced DNS disabled. All Traffic Shaping and QoS boxes are checked to enable. Comcast is my cable internet provider. I've noticed that my WAN Connection Up Time is often a fairly low number like the connection to the cable modem drops out frequently.
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Aug 22, 2012
Understand they are using dfferent cat cable. Does Cisco equipment nromally all are 1000-T, how to check they are 1000-T or 1000-Tx, does cat 5 with 4 pairs already support GE speed.
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Aug 8, 2012
I want to make packet sniffer which capture the IP packet and then extracting QOS filed from it's header
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Jul 17, 2012
I recently bought a Bose Soundlink bluetooth speaker and have paired it with both my ipod touch and ThinkPad w500. The iPod Touch sounds great, but the audio coming through the speaker via the w500 sounds like it is clipping, especially at normal-loud listening levels. Both the soundlink and the w500 have the latest bluetooth driver updates installed. The clipping occurs even when the main volume (and iTunes/Spotify) is turned down to 50% power.whether there is a way to reduce the "power" of the bluetooth signal so it does not cause the speaker to distort. Audio played through the speaker via 3.5mm from the w500 sounds great even at high volume.
Currently installed bluetooth drivers:
Bluetooth Enumerator (Microsoft)
ThinkPad Bluetooth 2.1 with Enhanced Data Rate (Broadcom)
Bluetooth Hands-free Audio (Broadcom)
Bluetooth Remote Control (Broadcom)
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May 8, 2012
If set the LAN to 1000 duplex I get better throughput than If I set it to Auto 100/1000,but the problem is that then my internet modem stops working,is there a solution to this ?
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May 31, 2012
I have two XPS 15 (L502x) laptops (purchased in March '12) with Intel Wifi link 1000 BGN adapters. On a regular basis both laptops lose their connection to the internet (via FIOS), at the same time. I'm convinced that is not FIOS or my router. I have a Dell STUDIO 8100, an iPhone and iPad, and these wireless devices do not lose their connections. Sometimes I'm able to resolve the issue by using "troubleshooting" via the adapter, often restarting the laptop and/or the router is the only way to resolve my problem. I've run the Dell Support software, it indicates no drivers are available for update, so I assume I'm current.I've read about turning off 802.11n, I've read about problems w/ power management and conflicts with wireless.
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Oct 12, 2011
My router broadcasts at 5GHz and 802.11n and despite having a an up-to-date Inetl(R) Wifi Link 1000 BGN driver teh computer does not recognise the network.
I googled and this appeared to be a lot of peoples problems, people who are offering remedies by buying a wireless adpater. URL
Personally I don't want to do that.
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Jun 14, 2011
I have the same issue and have been surfing the web for the solution for quite some time. Brand new Sony VAIO laptop with blu-ray has an Intel WiFi bgn 1000 wireless network adapter. It worked fine for couple of days, until i brought it to work. We use wireless connection in our office. Maximum 7 computers are connected at a time. All other 6 laptops connect to our network with no problems (all of them are on win7x64). Now, back to the problem. Wireless works at home and at work in the evening , when no one in the office. I've removed all 3rd party software, uninstalled Intel software. Am using clean driver from the Intel website. Tried different revisions of the driver - issue is still there. I've contacted VAIO support. This is not known issue to them. They offered standard actions (unisntalling the driver, power management options, enabling VAIO Smart Network). No updates of fixes on their support website. I have also checked in the event viewer. There is only one service being enabled and disabled constantly (TCP/IP NetBIOS Helper) - which is happening at the same time with wireless drop. There are about 5-8 drops per minute. Computer browser service disabled. Firewall disabled, antivirus disabled. We assume this could be an interference with mobile diveces. While now, we have disabled all wireless cards on all computers, switched off mobile phones. And... AXAXAXAXA!!! BSOD 0x00000018 (0x000....00, 0xFFFFFA800754A750, 0x00...02, 0xFC01020EFC01020B).
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Aug 20, 2011
N150 DGN 1000 wireless on/off switch led no longer switching on at boot up
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Jun 16, 2012
What is the command that can show the ACE Bundle (Like: ACE-4710-02-K9, ACE-4710-04-K9). We have ordered one ACE with 4G BW, and another one with 2G BW. But nothing shows this fact using "show hardware" and "show inventory" commands !
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Apr 29, 2011
I have a Cisco Valet+ AP. I have added an Engenius Range extender, big house, (actually a B&B). The setup seems to have gone well (ranger extender linked to AP). Is there a way that I can verify that a PC in the big house away from the AP is actually connected to the Range Extender.
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Apr 4, 2013
I have many VPN sites using ASA5505 with broadband connection and terminating on a single ASA5550.I have a problem with one site. they are having poor performance. One of the issues I can see is an error on the remote ASA 5505.ive tried the reccomended fix using this command: crypto ipsec security-association replay window-size 1024.
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Apr 29, 2012
how to check compliance for only one access list in cisco works.
Example:
I want to run a compliance template that only check access-list 13 to make sure it has the following and nothing else:
access-list 13 permit 1.1.1.1
access-list 13 permit 10.1.0.0 0.0.0.127
If something else is listed, then I'll deploy the template and it will remove any other entry besided the two above.
I have tried a Global config compliance on + access-list 13 permit 1.1.1.1 and it comes back and says it's not compliant and wants to remove everything else, which is every other access list. I have tried submodes thinking that it could check under ip access-list standard 13, but that didn't work either.
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Jul 17, 2012
Just upgraded Cisco ISE to 1.1.1 in my lab/demo environment and am now having problems with a basic posture implementation. In short I connect to a wireless SSID and check posture based on the presence of a file. The NAC agent is declaring my host as compliant and granting full network access however about 5 seconds later it it checks for requirements again while placing my host in the temporary network access. At this point it states I am compliant again and 5 seconds later scans again. This behaivour does not stop and continues endlessly until I close the wireless connection. I had no problems with this setup on 1.1.All logs indicate successful compliance and no errors in terms of compliance.
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May 23, 2012
When checking my port forwarding, it says that it is not open. Why?
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Apr 6, 2012
i have been trying to forward port 25565 for a server on a game called minecraft. I have a bt homehub 2 and i have followed everything on portforward.com and on several videos and still no luck. I have B.T net protect plus so I don't know if the firewall is blocking the port
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Apr 25, 2012
ISP : Charter Communications
Modem : Motorola SURFboard SB6121
Router : Linksys E1200
I started out installed on the CD and then I kept getting messages about not being set up and finally it kicked me out. So I started out with the basics, changing out ethernet cables and checking connections. I then tried cycling the modem, router, computer and still no go. As soon as I plug the modem straight back into the computer it kicks back on. So then I tried some other trouble shooting ideas on the forums with the last being MAC address clone, save changes, release renew IP, and finally another round of cycling and I still can't get it to work.
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Feb 27, 2013
there is a line set with a provider with EoMPLS.This is an international line coming with 10M connectivity.the line is working fine with udp traffic but with tcp we don t get any use more than 1M.
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Feb 7, 2011
I am trying to figure out how to setup quality of service on my network. At the moment i have computers connected to the PC port of my IP phone and the IP phone connected to the switch.I want the PC to stay on the default native VLAN and the phone to go on the VLAN 10I am using SNOM300 and SNOM360. I will configure the on the phone the VLAN ID and the priority.From my research, there are two ways that I can go about this on the port that is connected to the phone I canswitchport voice vlan vlan-idorswitchport voice vlan dot1pand then I will have to execute the commandmls qos trust cosmy question is which command do i use to configure the ports, and am I on the right track? Also, this is how I configure the ports that the IP phones are connected to, how do I configure the port that my Asterisk PBX server is connected to?
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May 25, 2011
We are having issues transferring a 200GB VHD file across our point to point without being corrupted in the process. Any good application for testing the line quality across the point to point?Preferably we want something free, but if there is an in depth tool that costs money, we are open to that option as well.
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May 1, 2012
Any good suggestions for a quality wifi adapter ? Everything I've used so far has been terrible.
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Jul 25, 2012
How to export Air Quality reports from a 5508? I'm pretty sure I have read that we can not look back in time at the Air Quality report from the WLC, but can from NCS. If NCS was in the picture, can the Air Qaulity Report somehow be exported?
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Mar 28, 2012
I'm in charge of the IT of a dorm with 200 inhabitants. A lot of people complain about the bad quality of "skype-calls". Audio is delayed and video stucks. The actual speed of our internet connection should be fast enough so I guess it has something to do with the QOS setting. I checked it on our WLC 3750 and right now we use Silver (best effort). Could there be any improvement when I set it to Platinum?
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Nov 4, 2011
I am facing Voice Quality issue in Cisco Ip phone. However I don’t have any issue while calling between extension in the same Site. I am facing voice quality issue while traffic flowing through the MPLS over GRE tunnel. Its working fine If I am removing the mls Qos in Cisco 3550 Interface.
[Code]....
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