[j-nsp] about ARP

[zeng watchthinker]

I just feel it is so unusual that if I ping 1000 packets and it is only the 
last packet lost which cause the arp entry  is cleared. Actually,if it is 
not the last packet lost, arp entry should exist. 

>From: "Harry Reynolds" <harry at juniper.net>
>To: "zeng watchthinker" 
<watchthinker at hotmail.com>,<juniper-nsp at puck.nether.net>
>Subject: RE: [j-nsp] about ARP
>Date: Wed, 25 May 2005 10:31:57 -0700
>
>I am not sure if we flush the arp cache after the related interface goes 
down, but it makes sense to do so.
>
>Regards
>
>
>
> > -----Original Message-----
> > From: zeng watchthinker [mailto:watchthinker at hotmail.com]
> > Sent: Wednesday, May 25, 2005 10:27 AM
> > To: Harry Reynolds; juniper-nsp at puck.nether.net
> > Subject: RE: [j-nsp] about ARP
> >
> > But there is still a problem.
> >
> > When ping can reach another end (1% lost), there is no arp
> > entry of remote end ip address in local system. Is flapping
> > caused arp clearance?
> >
> > >From: "Harry Reynolds" <harry at juniper.net>
> > >To: "zeng watchthinker"
> > <watchthinker at hotmail.com>,<juniper-nsp at puck.nether.net>
> > >Subject: RE: [j-nsp] about ARP
> > >Date: Wed, 25 May 2005 09:44:17 -0700
> > >
> > >Common to see duplicate address detection when a device
> > first activates.
> > Normally done by ARP-ing one's own address. This part sounds normal.
> > >
> > >HTHs
> > >
> > >
> > > > -----Original Message-----
> > > > From: juniper-nsp-bounces at puck.nether.net
> > > > [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of zeng
> > > > watchthinker
> > > > Sent: Wednesday, May 25, 2005 9:36 AM
> > > > To: juniper-nsp at puck.nether.net
> > > > Subject: [j-nsp] about ARP
> > > >
> > > > I found a strange problem when testing GE interoperate between 2
> > > > routes.
> > > >
> > > > Our side GE is flapping. When mirrored and capture some
> > packets, it
> > > > always generate ARP request for its own IP
> > > > address(!?) What will be the cause of this problem? It seems not
> > > > real but it do happen
> > > >
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