[c-nsp] unwanted "arp reply" traffic at IX

[Gert Doering]

Hi,

On Fri, Nov 16, 2007 at 03:37:48PM +0000, Chris Caputo wrote:
> In both cases, the participants are running Cisco routers that have 
> customer ATM based DSL circuits on other interfaces.
> 
> "no ip mobile arp" an "no ip proxy-arp" on the ATM or IX facing 
> interfaces have not stopped the apparent gratuitous ARPs.

Hooray for Cisco default "features".  This is one of the more stupid 
ones, especially as it's enabled by default.

Have them configure "no ip gratuitous-arps".

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de