[j-nsp] Rate limit ARP per interface (or JUNOS bug)?

Chris Adams cmadams at hiwaay.net
Fri May 15 11:40:21 EDT 2009


Once upon a time, Chuck Anderson <cra at wpi.edu> said:
> On Fri, May 15, 2009 at 09:36:24AM +0300, Pekka Savola wrote:
> > On Thu, 14 May 2009, Chris Adams wrote:
> >> Is this behavior a JUNOS bug or am I supposed to be rate-limiting ARP
> >> requests (on a per-VLAN basis) somehow?
> >
> > I've seen LAN loops etc cause junos problems.  That's why you need to  
> > add 'policer arp FOO' under interfaces,unit,family inet.  I'd have hoped 
> > Juniper would have sane defaults but ....
> 
> Isn't that the default?
> 
> router> show policer
> Policers:
> Name                                              Packets
> __default_arp_policer__                                 0

On the router in question:

Name                                              Packets
__default_arp_policer__                           4189504

So, apparently it was policing, but the default rate is still too high
for the router to handle (seems to kind of defeat the purpose of having
a default policer).

Anybody know what the default rate is?

-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.


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