From: Godswill Oletu (oletu@inbox.lv)
Date: Tue Dec 18 2007 - 10:47:33 ART
Scott,
You want to write that RFC? gratuituous arp request (i.e. arp request to
oneself), normally are not to be answered, or replied to; if there is a
reply to a gratuituous request, it means there is an ip address conflict and
this help check human or dhcp error in assigning duplicate ip addresses and
make the life of everyone sane.
In the gratuitous RFC that you will be writing can we make it so that each
host device can be sending gratuitous ping request to its own IP address;
now there should be a reply to that gratuituous ping request and if there is
no reply after 3 gratuituous ping requests, the device should pop-up an
error message saying "....ip address aren't properly configured..." :)
Godswill Oletu
CCIE #16464 (R&S)
----- Original Message -----
From: "Brad Ellis" <brad@ccbootcamp.com>
To: "Scott Morris" <smorris@ipexpert.com>; "Ben Holko"
<ben.holko@datacom.com.au>; "Vinu" <vinupeter@gmail.com>; "Cisco
certification" <ccielab@groupstudy.com>
Sent: Tuesday, December 18, 2007 2:52 AM
Subject: RE: Can Ping response give negative response !!!!!
> Scott,
>
> Because pings aren't as polite as ARPs.
>
> thanks,
> Brad Ellis
> CCIE#5796 (R&S / Security)
> CCSI# 30482
> CEO / President
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>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Scott Morris
> Sent: Tuesday, December 18, 2007 4:57 AM
> To: Ben Holko; Vinu; Cisco certification
> Subject: RE: Can Ping response give negative response !!!!!
> Importance: Low
>
> And here I just thought it was cool enough to respond BEFORE the ping
> was
> sent.
>
> If you can have gratuituous arp replies, why can't you have gratuituous
> ping
> replies?
>
> :)
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE-M
> #153, JNCIS-ER, CISSP, et al.
> CCSI/JNCI-M/JNCI-ER
> VP - Technical Training - IPexpert, Inc.
> IPexpert Sr. Technical Instructor
>
> A Cisco Learning Partner - We Accept Learning Credits!
>
> smorris@ipexpert.com
>
>
>
> Telephone: +1.810.326.1444
> Fax: +1.810.454.0130
> http://www.ipexpert.com
>
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Ben
> Holko
> Sent: Tuesday, December 18, 2007 12:27 AM
> To: Vinu; Cisco certification
> Subject: RE: Can Ping response give negative response !!!!!
>
> If my memory serves me correctly, this is actually a bug in a dual-core
> AMD
> CPU instruction set, and has been fixed in OS CPU drivers.
>
> Have a read of this informative post:
> http://forums.pcper.com/showthread.php?t=430695
>
> Ben
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Vinu
> Sent: Tuesday, 18 December 2007 3:56 PM
> To: Cisco certification
> Subject: Can Ping response give negative response !!!!!
>
> This is Really Wierd i saw it when pinging from One of our Servers in
> DataCentre
>
> Reply from 10.0.4.25: bytes=32 time=-10ms TTL=251 Reply from 10.0.4.25:
> bytes=32 time=-10ms TTL=251 Reply from 10.0.4.25: bytes=32 time=-10ms
> TTL=251 Reply from 10.0.4.25: bytes=32 time=-10ms TTL=251 Reply from
> 10.0.4.25: bytes=32 time=-10ms TTL=251 Reply from 10.0.4.25: bytes=32
> time=-10ms TTL=251 Reply from 10.0.4.25: bytes=32 time=-10ms TTL=251
> Reply
> from 10.0.4.25: bytes=32 time=-11ms TTL=251 Reply from 10.0.4.25:
> bytes=32
> time=-10ms TTL=251 Reply from 10.0.4.25: bytes=32 time=-11ms TTL=251
> Reply
> from 10.0.4.25: bytes=32 time=-10ms TTL=251 Reply from 10.0.4.25:
> bytes=32
> time=-10ms TTL=251 Reply from 10.0.4.25: bytes=32 time=-10ms TTL=251
> Reply
> from 10.0.4.25: bytes=32 time=-10ms TTL=251 Reply from 10.0.4.25:
> bytes=32
> time=-11ms TTL=251 Reply from 10.0.4.25: bytes=32 time=-10ms TTL=251
> Reply
> from 10.0.4.25: bytes=32 time=-10ms TTL=251 Ping statistics for
> 10.0.4.25:
> Packets: Sent = 836, Received = 836, Lost = 0 (0% loss), Approximate
> round trip times in milli-seconds:
> Minimum = 5ms, *Maximum = -10ms*, Average = 5137510ms
>
> When did Microsoft Discover Time can be mesures in -ve values too
> ????......
> :-p
>
>
> --
> Regards,
>
> Vinu Peter
>
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