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

Niels den Otter Niels.denOtter at surfnet.nl
Fri May 15 04:16:28 EDT 2009

On Friday, 15 May 2009, david.roy at orange-ftgroup.com wrote:
> You can use ARP Policer per vlan : 
> On your interface : 
> set interface ge-X/Y/Y unit XXX family inet policer arp ARP-POLICER
> firewall policer ARP-Policer {
> if-exceeding {
>     bandwidth-limit 32k;
>     burst-size-limit 32k;
> }
> then discard;
> }

We have also found out the hard way. Doing above using a group configuration
makes it easy to implement;

set groups klant-interface interfaces <*> unit <*> family inet policer arp per-interface-arp-limiter
set interfaces ge-0/3/0 apply-groups klant-interface
set firewall policer per-interface-arp-limiter if-exceeding bandwidth-limit 150k
set firewall policer per-interface-arp-limiter if-exceeding burst-size-limit 15k
set firewall policer per-interface-arp-limiter then discard

-- Niels
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