[j-nsp] Default ARP policer

Kisito Nguene Ndoum kisito at juniper.net
Tue Mar 16 09:06:37 EST 2004


See "policer" statement here, under "family" :
http://www.juniper.net/techpubs/software/junos/junos62/swconfig62-interfaces/html/interfaces-summary79.html#1321432

Example :

[edit]
user at router# show interfaces fe-0/0/3
unit 0 {
     family inet {
         policer {
             arp My_ARP_Policer;  <<<<<<<
         }
         address 4.4.4.1/24;
     }
}

[edit]
user at router# show firewall
policer My_ARP_Policer {
     if-exceeding {
         bandwidth-limit 3m;
         burst-size-limit 30k;
     }
}

- Kisito

At 12:40 AM 3/16/2004, Frederik Egres wrote:

>Hello,
>
>I did realize on our M20 that it drops some ARP packets received from the 
>gigabit network and
>it's due to the default arp policer :
>
>Policers:
>Name                                              Packets
>__default_arp_policer__                         46630134
>
>We know that we have too many arp traffic on our network but I would like 
>to know how to change the bandwidth and burst parameter of this default 
>policer. This doesn't seem documented.
>Also how to remove it ?
>
>We know about per-interface arp policer but unless it can scale to 
>thousands of vlans, we would prefer the aggregate default arp policer.
>
>It appears also that the incoming ARP replies on the M20, matching ARP 
>requests previously sent, are never dropped by the policer. Like if 
>policer keeps a table of the pending request/reply ?
>
>Thanks,
>-F.
>
>_________________________________________________________________
>Få alle de nye og sjove ikoner med MSN Messenger http://messenger.msn.dk
>
>_______________________________________________
>juniper-nsp mailing list juniper-nsp at puck.nether.net
>http://puck.nether.net/mailman/listinfo/juniper-nsp




More information about the juniper-nsp mailing list