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 Post subject: Encapsulation Error / Stable Platforms for CCIE RS
PostPosted: Thu Sep 11, 2014 1:56 pm 
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Joined: Mon Nov 11, 2013 3:45 pm
Posts: 9
Hi Guys

I may have asked this before but the problem is plaguing me.

I'm have encapsulation errors on certain routers in my topology. In the top I'll attach its R5, R6 and R7.

Success rate is 14 percent (48/329), round-trip min/avg/max = 24/41/72 ms (as an examples which is taking down adjacencies for BGP and OSPF)

I can reproduce this issues with

3725 - c3725-adventerprisek9-mz.124-12
3745 - c3745-adventerprisek9-mz.124-12
7206vxr - c7200-adventerprisek9-mz.124-24.T4
7206vxr - c7200-adventerprisek9-mz.152-4.S4

Anyone came across any fixes or work arounds ?

So the follow on question is if I cant get this issue resolved what platforms do people recommend as a stable router and ios to use that can cover off what is needed for the CCIE RS studying ?

Thanks




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 Post subject: Re: Encapsulation Error / Stable Platforms for CCIE RS
PostPosted: Fri Sep 12, 2014 5:05 pm 
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Joined: Mon Jul 14, 2014 9:54 pm
Posts: 32
Have you tried the INE forums. They are heavily CCIE centric:

http://ieoc.com/forums/


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 Post subject: Re: Encapsulation Error / Stable Platforms for CCIE RS
PostPosted: Sat Sep 13, 2014 5:21 pm 
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Joined: Mon Nov 11, 2013 3:45 pm
Posts: 9
No the main issue is a GNS issue which is why I thought id post here.


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 Post subject: Re: Encapsulation Error / Stable Platforms for CCIE RS
PostPosted: Wed Sep 24, 2014 8:22 pm 
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Joined: Wed Sep 24, 2014 7:54 pm
Posts: 3
I went through almost all of of the INE v4 workbook (except for switching) and never had that issue. From time to time, I'd lose packets when connecting to the devices I used as switches, but that was very rare, and was fixed by bouncing the interface.

For the switches I used the 3640 with the following image:
c3640-jk9o3s-mz.124-16a.bin

For the routers, I used 3725 with this image:
c3725-adventerprisek9-mz.124-15.T14.BIN


When INE came out with the v5 workbook, they simplified the topology which doesn't need any switch images, so I was able to use the 7200 for all devices with the following image.:

c7200-adventerprisek9-mz.152-4.M6.image

I've spent a good amount of time with this configuration, and as long as I was using fastethernet interfaces instead of gig interfaces it was very reliable.

I've attached my topology file that I've been using for v5. It's basically 10 7200 connected a the GNS3 switch. From there you just create dot1q subinterfaces on the 7200 interfaces for the creating the logical topology.

In both of the above scenarios, I used GNS3 0.8.6 on Windows 7.

I'm currently giving the new 1.0 Beta 2 a shot using IOU routers and switches. So far it's been pretty reliable but I've only been using it for a relatively short amount of time (about 30 hours or so) so I can't' comment on the stability with as much confidence as using the previously mentioned configurations.


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 Post subject: Re: Encapsulation Error / Stable Platforms for CCIE RS
PostPosted: Wed Sep 24, 2014 9:23 pm 
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Joined: Mon Nov 11, 2013 3:45 pm
Posts: 9
jasonm wrote:
I went through almost all of of the INE v4 workbook (except for switching) and never had that issue. From time to time, I'd lose packets when connecting to the devices I used as switches, but that was very rare, and was fixed by bouncing the interface.

For the switches I used the 3640 with the following image:
c3640-jk9o3s-mz.124-16a.bin

For the routers, I used 3725 with this image:
c3725-adventerprisek9-mz.124-15.T14.BIN


When INE came out with the v5 workbook, they simplified the topology which doesn't need any switch images, so I was able to use the 7200 for all devices with the following image.:

c7200-adventerprisek9-mz.152-4.M6.image

I've spent a good amount of time with this configuration, and as long as I was using fastethernet interfaces instead of gig interfaces it was very reliable.

I've attached my topology file that I've been using for v5. It's basically 10 7200 connected a the GNS3 switch. From there you just create dot1q subinterfaces on the 7200 interfaces for the creating the logical topology.

In both of the above scenarios, I used GNS3 0.8.6 on Windows 7.

I'm currently giving the new 1.0 Beta 2 a shot using IOU routers and switches. So far it's been pretty reliable but I've only been using it for a relatively short amount of time (about 30 hours or so) so I can't' comment on the stability with as much confidence as using the previously mentioned configurations.


Thanks for the response I'll. Keep this in mind.




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