Re: OT: Dynamips flap directly connection

From: Muhammad Nasim (muhammad.nasim@gmail.com)
Date: Sat Nov 22 2008 - 13:48:41 ARST

To be honest I never come into the Big Problem while practisign for my CCIE
Security.

Just you need to consider Dynampis(routers,switches,include PEMU,Vmware) a
patient which you need to give good treatment like you need to think how
dynampis is working what I need to do.

Some time IDlepc value , sometime restart, sometime image

Just think out of the box in order to really really enjoy the benefits of
Virtualization for both Exam preparation or Real World scenario simulation.

Hope this helps

2008/11/22 Piotr <usaccie@gmail.com>

> 50% cpu for 2 routers is not that good. Try changing your idlepc values.
> I noticed weird flapping but that was with a full lab loaded and my
> duo core cpu pegged..
>
> Ubuntu is a good alternative to windoze.
>
> 64bit OS / quad core is the way to go if you use dynamips/gns. If you
> do decide to upgrade do some research on the cpu, for example the
> newer cpu's in the prebuilt pc's have 4 mb cache vs a model or 2 older
> has 8mb cache. If you can afford a cpu with 12mb cache then that would
> be best but last I checked dell wanted 1k for that cpu.
>
> On 11/22/08, But Nicky <lyredhair@gmail.com> wrote:
> > Hi Omar,
> > Windows OS, when you start a lot of routers, there are usually errors
> > include interface flapping.
> > With your desktop/laptop, Linux is the very good solution for full-lab, I
> > think.
> >
> > Regards,
> > But Nguyen.
> >
> > 2008/11/22 Shogo Kobayashi <k.shogo@gmail.com>
> >
> >> Hi omar,
> >>
> >> it looks like something wrong with clock setting between two routers.
> >> i believe dynamips works fine with no clock rate set,
> >> u did any config on clock rate under R7 & R8 ?
> >>
> >> On Sat, Nov 22, 2008 at 4:17 PM, omar parihuana <
> omar.parihuana@gmail.com
> >> >wrote:
> >>
> >> > Hi List,
> >> >
> >> > I'm using Dynagen/Dynamips on Windows 2k machine, 2GB RAM Intel Dual
> >> > Core
> >> > 2.8Ghz. So far no problems, unfortunately I've tried to run two
> >> instances,
> >> > all seems ok, but I've noticed that one simple connection (two routers
> >> > directly connected via Serial interface) is flapping all time, I've
> >> stopped
> >> > all other routers (8 in total) but the flapping continues..
> >> > So i don't know why it happens... so are there some especial
> >> consideration
> >> > for running two instances... here my file:
> >> >
> >> > My file to start Dynagen:
> >> >
> >> > @echo off
> >> > rem Launch a local copy of dynamips
> >> > set dynamips=%CD%\dynamips-w2000.exe
> >> > cd %TEMP%
> >> > start /belownormal /min "Dynamips" "%dynamips%" -H 7200
> >> > start /belownormal /min "Dynamips" "%dynamips%" -H 7201
> >> > pause
> >> >
> >> > My .NET file:
> >> >
> >> > autostart = false
> >> > model = 3725
> >> >
> >> >
> >> > [localhost:7200]
> >> >
> >> > [[3725]]
> >> > image = E:\IOSDynagen\C3725-AD.image
> >> > ram = 148
> >> >
> >> >
> >> > [[ROUTER R1]]
> >> > F0/0 = R2 F0/0
> >> >
> >> > [[ROUTER R2]]
> >> > S0/0 = FR1 1
> >> >
> >> > [[ROUTER R4]]
> >> > S0/0 = FR1 2
> >> >
> >> >
> >> > [[ROUTER R5]]
> >> > S0/0 = FR1 4
> >> > F0/0 = R7 F0/0
> >> >
> >> >
> >> > [localhost:7201]
> >> >
> >> > [[3725]]
> >> > image = E:\IOSDynagen\C3725-AD.image
> >> > ram = 148
> >> >
> >> > [[ROUTER R6]]
> >> > slot1 = NM-4T
> >> > S0/0 = FR1 3
> >> >
> >> >
> >> > [[ROUTER R7]]
> >> >
> >> > [[ROUTER R8]]
> >> > S0/0 = R7 S0/0
> >> >
> >> > [[ROUTER R9]]
> >> > s0/0 = R6 S1/0
> >> > S0/1 = R6 S1/1
> >> > [[FRSW FR1]]
> >> > 1:204 = 2:402
> >> > 1:205 = 4:502
> >> > 1:206 = 3:602
> >> >
> >> >
> >> > CPU 50% Memory 1.5GB free.
> >> >
> >> > Actually only R7 and R8 are running... and I get:
> >> >
> >> > R8#
> >> > *Mar 1 00:50:10.559: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:50:30.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:51:00.559: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:51:20.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:51:50.559: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:52:10.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:52:40.563: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:53:00.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:53:30.559: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:53:50.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:54:20.563: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:54:40.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:55:10.563: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:55:30.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:56:00.563: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:56:20.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:56:50.563: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:57:10.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:57:40.563: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > R8#
> >> > *Mar 1 00:58:00.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> > *Mar 1 00:58:30.559: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to down
> >> > *Mar 1 00:58:50.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> >> > Serial0/0, changed state to up
> >> >
> >> > Please any suggestions will be appreciated... maybe my .net file is
> not
> >> > good...
> >> >
> >> >
> >> >
> >> > --
> >> > Omar E.P.T
> >> > -----------------
> >> > Certified Networking Professionals make better Connections!
> >> >
> >> >
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> >> >
> >> >
> >>
> >>
> >> --
> >> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
> >> $B>.NS (B $B>O8c (B Shogo KOBAYASHI
> >> k.shogo@gmail.com (e-mail)
> >> skype name: shogo2022
> >>
> >>
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-- 
Muhammad Nasim
Network Engineer
Saudi Arabia

Blogs and organic groups at http://www.ccie.net

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