[j-nsp] snmp count for arp policer?

[Clarke Morledge]

To bring some closure to this thread, it appears that the ARP policer 
counters for SNMP access have been fixed in Junos 10.4R6.

However, this is still only helpful for tracking ARP events exceeding your 
policer threshold.   As Stefan pointed out to me, if you have family 
bridge interface on an MX, you can implement a family bridge filter to 
look for "ether-type arp" and count that way.  Unfortunately, if you have 
VPLS running and the only interface you have in your VPLS instance is an 
IRB, this will not help you.

I guess the only workaround is to put your family bridge filter with the 
counter on your remote PEs to do your counting for you on your 
ingress/egress ports into the VPLS cloud.  Not a very elegant solution, 
but better than nothing.   Otherwise, configuring the appropriate 
threshold for your ARP poliicer is a lot of guesswork.

Junos is a great solution, but visibility into what is going through the 
routing platflorm is lacking in some areas.

Clarke Morledge
College of William and Mary
Information Technology - Network Engineering
Jones Hall (Room 18)
Williamsburg VA 23187