Re: Multicast and GNS3

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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