Cisco Systems 50% packet loss ?

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Subject Author Date
50% packet loss ? Kenneth 02-25-08
|--> Re: 50% packet loss ? headsetadapter....02-25-08
---> Re: 50% packet loss ? Gabriele Beltra...02-25-08
Posted by Kenneth on February 25, 2008, 1:00 pm
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Hi.

What does it meen when my ping reply is !.!.!.!.!.!.!. for one IP-address.
In LAN the ping reply is !!!!!!!! but from another network only every other
packet is comming back.




Posted by headsetadapter.com on February 25, 2008, 1:20 pm
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Kenneth,

Check for static route to non-existing or dead gateway. For example, if you
have two static routes with the same metrics to the same destination, router
will try to do a load-balancing between gateways, and if one is down, you
will get every other packet lost.

Good luck,

Mike
CCNP, CCDP, CCSP, Cisco Voice, MCSE W2K, MCSE+I, Security+, etc.
CCIE R&S (in progress), CCIE Voice (in progress)
------
Headset Adapters for Cisco IP Phones
www.ciscoheadsetadapter.com
www.headsetadapter.com



> Hi.
>
> What does it meen when my ping reply is !.!.!.!.!.!.!. for one IP-address.
> In LAN the ping reply is !!!!!!!! but from another network only every
> other packet is comming back.
>
>
>



Posted by Gabriele Beltrame on February 25, 2008, 3:32 pm
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| Hi.
|
| What does it meen when my ping reply is !.!.!.!.!.!.!. for one IP-address.
| In LAN the ping reply is !!!!!!!! but from another network only every
other
| packet is comming back.
|

Hi,

Apart from what already told in the previous reply, this behavior could be
also caused by ICMP rate limiting

Regards,
Gabriele



Posted by Trendkill on February 25, 2008, 3:46 pm
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> | Hi.
> |
> | What does it meen when my ping reply is !.!.!.!.!.!.!. for one IP-address.
> | In LAN the ping reply is !!!!!!!! but from another network only every
> other
> | packet is comming back.
> |
>
> Hi,
>
> Apart from what already told in the previous reply, this behavior could be
> also caused by ICMP rate limiting
>
> Regards,
> Gabriele

While unlikely, I have also seen this happen when there is load
balancing across firewalls or similar devices and there is not a
consistent rule set. Any time when load balancing takes place, there
is this option, albeit mostly when you use statics or you have some
kind of traffic manipulation device (load balancer, firewall, etc).

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