topic Re: Checking Internet Speed directly in the Cisco router? in Switching

Checking Internet Speed directly in the Cisco router?

Rabnawaz Anwar — Thu, 07 Mar 2019 11:11:48 GMT

Hi,

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?

There are number of questions and confusions regarding internet speed.As it is seeen 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.

Now plz help us 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?

Rabnawaz Anwar

Checking Internet Speed directly in the Cisco router?

John Blakley — Thu, 03 Nov 2011 13:51:02 GMT

What speeds are you actually seeing? I'd check duplex on the interfaces of the router and the switch that connects to your router. You can use www.speakeasy.net/speedtest to check for speeds, but I'm not sure where you're located. Most online sites will get you fairly close to true speed though, but you also need to take into consideration the fact that others will be using that site, how many hops, etc.

HTH,

John

Checking Internet Speed directly in the Cisco router?

Rabnawaz Anwar — Thu, 03 Nov 2011 15:49:49 GMT

We are seeing about 3-4Mbps on clients.There are about 60 clients in our local area network.Each is allow to access internet.

Re: Checking Internet Speed directly in the Cisco router?

johnlloyd_13 — Thu, 03 Nov 2011 16:34:40 GMT

Hi,

I agree with John. Make sure your 1841 matches the speed/duplex on the 3825 and with your LAN switch.

Perform your FTP/Iperf tests using a laptop/PC connected directly behind the 1841 FE LAN port.

If you're still not satisfied with the results, ask your ISP to do an onsite RFC 2544 test.

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Re: Checking Internet Speed directly in the Cisco router?

scanaan — Thu, 03 Nov 2011 17:01:48 GMT

you may want to check if the 1841 has throtlling of the speed to vasrious access-list's from a previous configuration perhaps. its unlikely since youre seeing 3-4mbps but it might be related to some old piece of code.

can you post a config?

Re: Checking Internet Speed directly in the Cisco router?

Joseph W. Doherty — Thu, 03 Nov 2011 23:34:23 GMT

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An 1841 could easily struggle with 100 Mbps duplex. What's its CPU look like when you run a speedtest?

PS:

Your 1841 is rated at 75 Kpps while your ISP's 3825 is rated at 350 Kpps.

Re: Checking Internet Speed directly in the Cisco router?

cashqoo — Fri, 04 Nov 2011 01:25:10 GMT

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).

Since their test included the ISP router and the link, 94-96mbps result sounds reasonable. the problem may possibly be located within your network.

you can use "http://speedtest.net/" to test the link's bandwidth. it is pretty accurately for where i am located.

you may also want to check the statistics on your network equipments.

cpu usage
memory usage
interface bandwidth utilisation
interface errors
logging, for any possible errors

having a snmp server could do the job, and also provide you with historical data.

Re: Checking Internet Speed directly in the Cisco router?

Rabnawaz Anwar — Fri, 04 Nov 2011 13:28:59 GMT

My question remains there "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?

However

Duplex settings are same with the ISP router.I have rechecked them.

The other option as depicted by Joseph that 1841 router could not support 100Mbps connection.I am not sure of it.Is there any document/link available where this information is verified?Then which router is best for the connection?Is 2800 router is ok?

Re: Checking Internet Speed directly in the Cisco router?

johnlloyd_13 — Fri, 04 Nov 2011 14:31:42 GMT

Hi,

Your only option is to use the show interface fx/x | i rate command to check out the link utilization.

I would agree with Joseph. I'm afraid your 1841 might not be able to handle 100 meg traffic. We use usually deploy our 1841s for 10-20 meg Metro-E.

I would sugeest to have the same 3825 router such as the one given by your ISP or go for the 3900 ISR G2 (if budget permits).

See link below for router performance matrix:

http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

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Re: Checking Internet Speed directly in the Cisco router?

Rabnawaz Anwar — Fri, 04 Nov 2011 15:14:49 GMT

I have enter the command and here is the output.But I really dont understand it.Please explain it for me

JSRouter#sh interface f0/1 | i rate

Queueing strategy: fifo

5 minute input rate 961000 bits/sec, 235 packets/sec

5 minute output rate 847000 bits/sec, 215 packets/sec

JSRouter#sh interface f0/0 | i rate

Queueing strategy: fifo

5 minute input rate 758000 bits/sec, 215 packets/sec

5 minute output rate 981000 bits/sec, 249 packets/sec

JSRouter#

Here I want to mention that f0/0 is connected to ISP 3825 router

Interface f0/1 is connected to internal network. to switch

Re: Checking Internet Speed directly in the Cisco router?

johnlloyd_13 — Fri, 04 Nov 2011 16:18:48 GMT

JSRouter#sh interface f0/0 | i rate

Queueing strategy: fifo

5 minute input rate 758000 bits/sec, 215 packets/sec. >>> 758 kbps DOWNLOAD

5 minute output rate 981000 bits/sec, 249 packets/sec. >>> 981 kbps UPLOAD

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Re: Checking Internet Speed directly in the Cisco router?

rtjensen4 — Fri, 04 Nov 2011 18:20:56 GMT

I would have to agree with the other replies about capacity. I don't think an 1841 will support that much traffic. I have a 2801 running a 20mbps internet connection, with no NAT or anything on it, and when it's pushing full bandwidth, CPU is 60-70%. You should look at a larger 2800/2900 router or even a layer 3 switch depending on what your router is doing. The major thing you lose with a Layer 3 switch vs a router is NAT. If this is just routing, you'd be OK with a Layer 3 switch. All depends on what else is going on on your router.

Kindly rabnawazanwar find the

Amira Saad — Mon, 10 Nov 2014 11:03:32 GMT

Kindly rabnawazanwar

find the below solution which is tested

try to ping on the tested interface by a datagram size and repeat as follow

ping x.y.z.133 so 1 x.y.z.134 size 1555 repeat 100

till the output is zero

and find the follow

show interface ( needed to be tested )

show the following :

5 minute input rate 7678000 bits/sec, 887 packets/sec
5 minute output rate 901000 bits/sec, 607 packets/sec

to check the interface speed

Last updated 2005 - Cisco

Paul Wedde — Thu, 27 Jul 2017 23:14:20 GMT

Last updated 2005 - Cisco TTCP - http://www.cisco.com/c/en/us/support/docs/dial-access/asynchronous-connections/10340-ttcp.html

Available on some IOS platforms and does what you require (Throughput testing on-device). I stumbled upon this post looking for TTCP and now I am happily throughput testing to and from my Cisco IOS device. Hope this helps other people looking for this functionality.

BTW, my experiences has been

Joseph W. Doherty — Fri, 28 Jul 2017 00:20:56 GMT

BTW, my experiences has been TTCP is available on few Cisco platforms, but it doesn't hurt to see if it's available.

Re: Checking Internet Speed directly in the Cisco router?

Asim Pandey — Fri, 29 Jun 2018 18:12:21 GMT

I don't understand how this or any other answer(s) addresess the question even remotely.

Speakeasy...really...is that what we use for CLI on a Cisco router? I think it was pretty clear from the question that the query was " if there is an available CLI to test speed real time from a router"

Duplex setting and speakeasy and explaining fifo rates do not address, please try to stay relevant to the questions asked. Thank you.

Re: Checking Internet Speed directly in the Cisco router?

Joseph W. Doherty — Fri, 29 Jun 2018 19:08:30 GMT

Well in answer to the original question, some Cisco devices support a hidden TTCP implementation, which can be used for some network performance testing. Some Cisco devices also support IP SLA tests, that can be used for some performance testing. But in general, Cisco routers don't have a CLI feature to "speed test" a network (as that's not the purpose of a router).

Re: Checking Internet Speed directly in the Cisco router?

Julio.Velez — Mon, 19 Oct 2020 14:42:36 GMT

hopefully by now Cisco has come with a solution to this important request.

Re: Checking Internet Speed directly in the Cisco router?

Joseph W. Doherty — Mon, 19 Oct 2020 16:55:03 GMT

Not that I'm aware of. Also, I suspect, it's unlikely they will, as bulk performance testing is better conduced "outside" of the Cisco device.

Heck, why often people wonder why pinging a Cisco router might give such erratic response times when link isn't loaded. This because, it's a low priority task and (ping) wasn't really designed as a performance benchmark tool, it was designed more to determine if target host is "alive".

Re: Checking Internet Speed directly in the Cisco router?

michaelliu — Wed, 28 Sep 2022 04:15:49 GMT

flood it with traffic with something like

iperf3 -c 8.8.8.8 tcp session=50 bw=500