Re: Lost of packets in LAN

hrm.....

what is distance of the CAT6 connected from 6500 to 7200 (which is losing
1%), just a guess,

Also can please change the ports one by one on 6500 and 7200, I mean keep
the same port in 7200 and change the port in 6500 and then ping and so on,

Keep us update about ur findings : )

HTH

2009/6/16 Rodrigo <gudines_at_terra.com.br>

> Hi
>
>
>
> I have checked ping from PC to PC in 6500 and the problem haven4t occured.
>
> There is another 7200 connected with the same 6500 and they didn4t lose
> ping from each other. But this 7200 is connected with a fiber cable and
> 1Gbps.
>
>
>
>
>
>
>
>
>
> *De:* Muhammad Nasim [mailto:muhammad.nasim_at_gmail.com]
> *Enviada:* terga-feira, 16 de junho de 2009 17:00
> *Para:* Rodrigo
> *Cc:* Rob Clav; ccielab_at_groupstudy.com
>
> *Assunto:* Re: Lost of packets in LAN
>
>
>
> As Forg said, check PC to PC as well in order to really isolate that this
> will be only the issue from 7200 to 6500
>
>
>
>
>
> 2009/6/16 Rodrigo <gudines_at_terra.com.br>
>
> Hi Rob,
>
>
>
> The buffers are OK.
>
> I entered the command "show ip icmp rate-limit" and I saw a lot of packets
> unreachable ONLY from fa0/1.1.
>
> The number is growing.
>
>
>
> The default command is "ip icmp rate-limit unreachable 500". I have tried
> to put 50000, 60000... But It haven4t done any result.
>
>
>
> Another suggestion?
>
>
>
> Rodrigo
>
>
>
> De: Rob Clav [mailto:robclav_at_gmail.com]
> Enviada: terga-feira, 16 de junho de 2009 12:49
> Para: Rodrigo
> Cc: ccielab_at_groupstudy.com
> Assunto: Re: Lost of packets in LAN
>
>
>
>
> Hi Rodrigo,
>
> some time ago I suffered some stuff like that, in fact the problem came
> because a interface buffer overflow. You will find more information at this
> document.
>
> If you inspect the interface buffer of 7200 you will realize they are too
> smalls.
>
> http://www.cisco.com/application/pdf/paws/16122/hwts_7200_16122.pdf
>
>
>
> PLS confirm it helps or not.
>
> Robclav
>
> 2009/6/16 Rodrigo <gudines_at_terra.com.br>
>
> Hi my friends,
>
>
>
> I am studying for CCIE Lab R&S, but a problem at my work is getting me
> nervous this days.
>
>
>
> Topology:
>
>
>
> 7200 - fastethernet 0/1 (100Mbps FULL) <--------------> 6500 -
> fastethernet
> 5/48 (100Mbps FULL)
>
>
>
> Every time that I started a ping of 1000 packets of 100 bytes, I lost
> ALWAYS
> 1% of the total of packets sent.
>
> It is a strange behavior because I am in LAN .
>
>
>
> Does anyone get a similar problem?
>
>
>
> 7200 fa0/1 is configured with encapsulation dot1q with 2 VLANS and 6500
> side
> is configured with trunk .
>
> We have tried to change cable, port...
>
>
>
> The utilization in fa0/1 7200 port is average 40Mbps to 50Mbps.
>
> There aren4t errors in this interfaces.
>
>
>
> Thanks for anyone can helps
>
>
>
> Rodrigo
>
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