Re: Multicast and GNS3

Agreed with yuri and paul,

I have noticed the same issue while doing multicast lab last week and I did as Yuri commented.

And good i have read this post today so no need to put effort on gns3 to fighure out the issue.

Shahid!

Sent from my iPhone

On Oct 21, 2011, at 3:08 AM, Paul Negron <negron.paul_at_gmail.com> wrote:

> Please keep in mind that Dynamips was not designed to test data plane. Only
> Control Plane. If you go into it with that expectation, you will be not be
> surprised.
>
> Paul
> --
> Paul Negron
> CCIE# 14856 CCSI# 22752
> Senior Technical Instructor/Consultant
>
>
>
>> From: Yuri Bank <yuribank_at_gmail.com>
>> Reply-To: Yuri Bank <yuribank_at_gmail.com>
>> Date: Thu, 20 Oct 2011 16:27:48 -0700
>> To: gp <gs4me2me_at_gmail.com>
>> Cc: Piotr Malarski <piotr.malarski.99_at_gmail.com>, Chris Grammer
>> <cgrammer_at_essilorusa.com>, Cisco certification <ccielab_at_groupstudy.com>
>> Subject: Re: Multicast and GNS3
>>
>> Yes! There are definitely some issues with Multicast in Dynamips! I also
>> find that sending extended volumes of traffic (pings with high repeat
>> counts) will screw things up. Eventually I have to reload the entire
>> topology. This is why I limit my multicast ping tests to around 5-10 pings
>> at a time. Not a big deal because thats all it really takes to test
>> Multicast routing.
>>
>> 2011/10/20 gp <gs4me2me_at_gmail.com>
>>
>>> I have the same problem with gns3, sometimes work, sometimes not. Using fe
>>> int.
>>>
>>> Gp
>>>
>>>
>>> -----Original Message-----
>>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>>> Piotr Malarski
>>> Sent: Thursday, September 16, 2010 8:27 PM
>>> To: Chris Grammer
>>> Cc: Cisco certification
>>> Subject: Re: Multicast and GNS3
>>>
>>> Hope this will work for you. On FE links I even had random problem
>>> with pinging adjacent interfaces...
>>>
>>> On Thu, Sep 16, 2010 at 2:22 PM, Chris Grammer <cgrammer_at_essilorusa.com>
>>> wrote:
>>>> Awesome!
>>>>
>>>> Thanks
>>>>
>>>> Chris
>>>>
>>>> On Thu, Sep 16, 2010 at 1:17 PM, Piotr Malarski
>>>> <piotr.malarski.99_at_gmail.com> wrote:
>>>>>
>>>>> I had similar problems with Dynamips. I replaced all FastEthernet
>>>>> links with Serial links. I have no idea why but it works now.
>>>>>
>>>>> On Thu, Sep 16, 2010 at 2:06 PM, Chris Grammer <cgrammer_at_essilorusa.com
>>>>
>>>>> wrote:
>>>>>> Has anyone experienced problems with multicast and GNS3?
>>>>>> I can run about 20 routers on my setup (20 just to see if i could do
>>> it
>>>>>> :)
>>>>>> )
>>>>>> I usually run 8 or 9 routers with MPLS or IGP scenarios with no
>>> problems
>>>>>> at
>>>>>> all.
>>>>>>
>>>>>> But, I can run a 4 router multicast scenario with an infinite ping to
>>>>>> the
>>>>>> multicast group and weirdnesses start occurring.
>>>>>>
>>>>>>
>>>>>> For instance, I had an Auto-RP setup and after about 100 pings, ospf
>>>>>> peers
>>>>>> started dropping.
>>>>>> I switched to EIGRP and the same thing...eigrp hellos start timing
>>> out.
>>>>>> It appears to be something the ping to a multicast group.
>>>>>>
>>>>>> I did some google searches, but cant find anything related.
>>>>>>
>>>>>>
>>>>>> Chris
>>>>>>
>>>>>>
>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>
>>>>>>
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Received on Sun Oct 23 2011 - 02:17:23 ART