[j-nsp] Clearing ARP on Logical Interface (M/MX Series)
admin at toph.ca
Sun Jan 31 06:06:58 EST 2010
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I'm attempting to find documentation on this, but have been unable to.
Is it possible to clear all the arp entries from a layer 3 logical
interface on an M/MX series router? The interface is a trunk doing vlan
tagging, and has multiple logical interfaces off the single physical
There were a couple ways to do this on Cisco depending on the device and
IOS revision. Some devices you could do a "clear arp interface" on the
vlan, while others you could set a very low "arp timeout" temporarily on
the subinterface. I attempted to look for the latter equiv on Juniper,
But from what I can tell, this only reduces the timer for *new* arp
entries, not ones already in the arp table.
Perhaps even a way to clear all the arp entries for a CIDR, as this
would still speed the time instead of having to clear all the arp
entries individually with "clear arp hostname x.x.x.x".
Does anyone have any insight?
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